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Dr. Walter Nahm, MD, PHD

San Diego, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Nahm, Dermatologist in San Diego, CA?

    Dr. Walter Nahm, MD, PHD is a Dermatologist, who primarily practices in San Diego, CA. He is board certified. Dr. Nahm graduated from Baylor College of Medicine and completed his residency at Roger Williams Medical Center Program. Dr. Nahm is fluent in English, Korean, and Spanish, and is currently seeing new patients. Dr. Nahm’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nahm’s office at (858) 278-8835.

    Where did Dr. Nahm go to medical school and complete their residency?

    • Residency: Roger Williams Medical Center Program

    • Medical School: Baylor College of Medicine

    Is Dr. Nahm board certified as a Dermatologist?

    Yes, Dr. Walter Nahm, MD, PHD is board certified by the American Board of Dermatology

    What languages does Dr. Nahm speak?

    Dr. Nahm and their clinical team can communicate with patients in the following languages:

    • English

    • Korean

    • Spanish

    What conditions does Dr. Nahm treat?

    As a Dermatologist, Dr. Nahm diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Nahm. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Actinic Keratosis
    • Skin Condition
    • Sun Exposure
    • Skin Cancer Treatment (PDQ®)
    • Solar keratosis
    • Precancerous skin lesion
    • Rough sun spots

    ICD-10 Codes:

    • L570: Actinic keratosis

    Also known as:

    • Inflamed Seborrheic Keratosis
    • Benign Tumor
    • Skin Condition
    • Irritated seborrheic keratosis
    • Red skin growth
    • Inflamed age spot

    ICD-10 Codes:

    • L820: Inflamed seborrheic keratosis

    Also known as:

    • Skin Tumor of Uncertain Behavior
    • Skin Condition
    • Skin Neoplasm
    • Skin Growth
    • Uncertain Skin Lesion

    ICD-10 Codes:

    • D485: Neoplasm of uncertain behavior of skin

    Also known as:

    • Epidermal Cyst
    • Skin Condition
    • Sebaceous Cyst
    • Keratin Cyst
    • Epidermoid Cyst

    ICD-10 Codes:

    • L720: Epidermal cyst

    Also known as:

    • Chronic Radiation Skin Changes
    • Skin Condition
    • Long-term radiation dermatitis
    • Skin damage from radiation
    • Non-ionizing radiation skin effects

    ICD-10 Codes:

    • L578: Other skin changes due to chronic exposure to nonionizing radiation

    Also known as:

    • Other Types of Psoriasis
    • Psoriasis
    • Atypical psoriasis
    • Uncommon psoriasis
    • Variant psoriasis

    ICD-10 Codes:

    • L408: Other psoriasis

    Also known as:

    • Acne Vulgaris
    • Acne
    • Common acne
    • Pimples
    • Breakouts

    ICD-10 Codes:

    • L700: Acne vulgaris

    What procedures does Dr. Nahm perform?

    As a Dermatologist, Dr. Nahm performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Nahm. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Removal of Multiple Benign Skin Lesions
    • Removal of Precancerous Skin Spots
    • Shaving Removal of Skin Lesion (Face/Ears/Eyelids/Nose/Lips)
    • Shaving Skin Lesion
    • Skin Lesion Shave Removal (Medium)
    • Shaving of Skin Lesion (Face/Ears)
    • Skin Lesion Shaving (1.1-2.0 cm)
    • Skin Conditions
    • Skin Growth Destruction
    • Benign Lesion Excision
    • Cryosurgery for Skin Lesions
    • Electrosurgery for Skin Growths
    • Destruction of Actinic Keratoses
    • Precancerous Lesion Treatment
    • Facial skin lesion shave excision
    • Dermal lesion shaving
    • Epidermal lesion removal
    • Mole shaving on face
    • Skin Growth Shave Excision
    • Dermal Lesion Shaving
    • Epidermal Lesion Removal
    • Shave Excision of Skin Lesion
    • Skin Growth Removal (Shave)
    • Epidermal Lesion Shaving
    • Skin Tag Removal
    • Mole Shaving
    • Epidermal Lesion Shave Excision
    • Dermal Lesion Removal
    • Skin Growth Shaving

    CPT Codes:

    • 17111: Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), of benign lesions other than skin tags or cutaneous vascular proliferative lesions; 15 or more lesions
    • 17004: Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), premalignant lesions (eg, actinic keratoses), 15 or more lesions
    • 11313: Shaving of epidermal or dermal lesion, single lesion, face, ears, eyelids, nose, lips, mucous membrane; lesion diameter over 2.0 cm
    • 11308: Shaving of epidermal or dermal lesion, single lesion, scalp, neck, hands, feet, genitalia; lesion diameter over 2.0 cm
    • 11302: Shaving of epidermal or dermal lesion, single lesion, trunk, arms or legs; lesion diameter 1.1 to 2.0 cm
    • 11312: Shaving of epidermal or dermal lesion, single lesion, face, ears, eyelids, nose, lips, mucous membrane; lesion diameter 1.1 to 2.0 cm
    • 11307: Shaving of epidermal or dermal lesion, single lesion, scalp, neck, hands, feet, genitalia; lesion diameter 1.1 to 2.0 cm

    Also known as:

    • Skin Biopsy
    • Skin Biopsy (Punch)
    • Additional Skin Biopsy (Punch)
    • Incisional Skin Biopsy
    • Wedge Biopsy
    • Skin Lesion Biopsy
    • Punch Biopsy
    • Dermal Punch Biopsy
    • Multiple Punch Biopsies
    • Second Skin Biopsy
    • Additional Skin Lesion Biopsy

    CPT Codes:

    • 11106: Incisional biopsy of skin (eg, wedge) (including simple closure, when performed); single lesion
    • 11104: Punch biopsy of skin (including simple closure, when performed); single lesion
    • 11105: Punch biopsy of skin (including simple closure, when performed); each separate/additional lesion (List separately in addition to code for primary procedure)

    Also known as:

    • Adjacent Tissue Transfer (Trunk)
    • Full Thickness Skin Graft (Face, Neck, Hands, Feet)
    • Full Thickness Skin Graft (Small Area)
    • Skin Substitute Graft (Small Area)
    • Full Thickness Skin Graft (Face)
    • Small Full Thickness Skin Graft (Trunk)
    • Skin Flap Surgery
    • Local Flap Reconstruction
    • Tissue Rearrangement Surgery
    • Skin Repair Surgery
    • Facial skin graft
    • Hand skin graft
    • Neck skin graft
    • Genital skin graft
    • Free skin graft
    • Skin transplant
    • Dermal graft
    • Artificial Skin Graft
    • Wound Covering Application
    • Skin Replacement Surgery
    • Facial Skin Graft
    • Free Skin Graft (Nose/Ears/Eyelids/Lips)
    • Full Thickness Graft for Face
    • Cosmetic Skin Graft (Face)
    • Full Thickness Skin Transplant
    • Trunk Skin Graft
    • Free Skin Graft
    • Small Skin Graft Surgery

    CPT Codes:

    • 14001: Adjacent tissue transfer or rearrangement, trunk; defect 10.1 sq cm to 30.0 sq cm
    • 15240: Full Thickness Graft, Free, Including Direct Closure Of Donor Site, Forehead, Cheeks, Chin, Mouth, Neck, Axillae, Genitalia, Hands, And/Or Feet; 20 Sq Cm Or Less
    • 15220: Full thickness graft, free, including direct closure of donor site, scalp, arms, and/or legs; 20 sq cm or less
    • 15275: Application of skin substitute graft to face, scalp, eyelids, mouth, neck, ears, orbits, genitalia, hands, feet, and/or multiple digits, total wound surface area up to 100 sq cm; first 25 sq cm or less wound surface area
    • 15260: Full thickness graft, free, including direct closure of donor site, nose, ears, eyelids, and/or lips; 20 sq cm or less
    • 15200: Full thickness graft, free, including direct closure of donor site, trunk; 20 sq cm or less

    Also known as:

    • Skin Lesion Shaving (Large)
    • Skin Growth Removal
    • Dermal Lesion Excision
    • Shave Biopsy (Large)
    • Skin Tag Removal

    CPT Codes:

    • 11303: Shaving of epidermal or dermal lesion, single lesion, trunk, arms or legs; lesion diameter over 2.0 cm

    Also known as:

    • Skin Flap Surgery (Medium Size)
    • Small Skin Flap Surgery (Scalp, Arms, or Legs)
    • Adjacent tissue transfer
    • Local flap surgery
    • Skin rearrangement
    • Adjacent Tissue Transfer
    • Local Flap Surgery
    • Skin Rearrangement Procedure
    • Small Defect Skin Repair

    CPT Codes:

    • 14041: Adjacent tissue transfer or rearrangement, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands and/or feet; defect 10.1 sq cm to 30.0 sq cm
    • 14020: Adjacent tissue transfer or rearrangement, scalp, arms and/or legs; defect 10 sq cm or less

    Also known as:

    • Multiple Skin Lesion Injections
    • Intralesional Injections (Multiple)
    • Injections for Skin Growths
    • Steroid Injections for Skin

    CPT Codes:

    • 11901: Injection, intralesional; more than 7 lesions

    Also known as:

    • Surgical Preparation for Skin Graft (Infants/Children)
    • Surgery
    • Wound Debridement for Graft
    • Burn Scar Release Surgery
    • Recipient Site Preparation for Skin Repair

    CPT Codes:

    • 15004: Surgical preparation or creation of recipient site by excision of open wounds, burn eschar, or scar (including subcutaneous tissues), or incisional release of scar contracture, face, scalp, eyelids, mouth, neck, ears, orbits, genitalia, hands, feet and/or multiple digits; first 100 sq cm or 1% of body area of infants and children

    Also known as:

    • Wound or Burn Site Preparation for Graft
    • Surgery
    • Surgical Wound Debridement
    • Burn Eschar Excision
    • Scar Contracture Release
    • Recipient Site Preparation

    CPT Codes:

    • 15002: Surgical preparation or creation of recipient site by excision of open wounds, burn eschar, or scar (including subcutaneous tissues), or incisional release of scar contracture, trunk, arms, legs; first 100 sq cm or 1% of body area of infants and children

    Also known as:

    • Mohs Micrographic Surgery
    • Mohs Micrographic Surgery (Trunk/Arms/Legs, First Stage)
    • Mohs Surgery (Additional Stage)
    • Mohs Surgery
    • Micrographic Skin Cancer Surgery
    • Mohs Excision
    • Precision Skin Cancer Removal
    • Mohs surgery body
    • Skin cancer removal trunk
    • Micrographic surgery arms
    • Precise skin cancer surgery legs
    • Mohs micrographic surgery
    • Skin cancer removal with mapping
    • Staged skin cancer surgery

    CPT Codes:

    • 17311: Mohs micrographic technique, including removal of all gross tumor, surgical excision of tissue specimens, mapping, color coding of specimens, microscopic examination of specimens by the surgeon, and histopathologic preparation including routine stain(s) (eg, hematoxylin and eosin, toluidine blue), head, neck, hands, feet, genitalia, or any location with surgery directly involving muscle, cartilage, bone, tendon, major nerves, or vessels; first stage, up to 5 tissue blocks
    • 17313: Mohs micrographic technique, including removal of all gross tumor, surgical excision of tissue specimens, mapping, color coding of specimens, microscopic examination of specimens by the surgeon, and histopathologic preparation including routine stain(s) (eg, hematoxylin and eosin, toluidine blue), of the trunk, arms, or legs; first stage, up to 5 tissue blocks
    • 17314: Mohs micrographic technique, including removal of all gross tumor, surgical excision of tissue specimens, mapping, color coding of specimens, microscopic examination of specimens by the surgeon, and histopathologic preparation including routine stain(s) (eg, hematoxylin and eosin, toluidine blue), of the trunk, arms, or legs; each additional stage after the first stage, up to 5 tissue blocks (List separately in addition to code for primary procedure)

    Also known as:

    • Abscess Incision and Drainage
    • Abscess
    • I&D of Abscess
    • Lancing an Abscess
    • Draining a Boil
    • Cyst Drainage

    CPT Codes:

    • 10061: Incision and drainage of abscess (eg, carbuncle, suppurative hidradenitis, cutaneous or subcutaneous abscess, cyst, furuncle, or paronychia); complicated or multiple

    Also known as:

    • Adjacent Tissue Transfer (Medium Defect)
    • Local Skin Flap
    • Tissue Rearrangement Surgery
    • Skin Reconstruction (Local)
    • Adjacent Tissue Graft

    CPT Codes:

    • 14021: Adjacent tissue transfer or rearrangement, scalp, arms and/or legs; defect 10.1 sq cm to 30.0 sq cm

    Also known as:

    • Complex Skin Repair (Face, Neck, Hands, Feet)
    • Complex Laceration Repair
    • Deep Wound Closure
    • Surgical Skin Repair

    CPT Codes:

    • 13131: Repair, complex, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands and/or feet; 1.1 cm to 2.5 cm

    Also known as:

    • Mohs Surgery
    • Mohs Micrographic Surgery
    • Skin Cancer Removal
    • Precise Skin Cancer Surgery

    CPT Codes:

    • 17312: Mohs micrographic technique, including removal of all gross tumor, surgical excision of tissue specimens, mapping, color coding of specimens, microscopic examination of specimens by the surgeon, and histopathologic preparation including routine stain(s) (eg, hematoxylin and eosin, toluidine blue), head, neck, hands, feet, genitalia, or any location with surgery directly involving muscle, cartilage, bone, tendon, major nerves, or vessels; each additional stage after the first stage, up to 5 tissue blocks (List separately in addition to code for primary procedure)

    Also known as:

    • Facial Tissue Reconstruction
    • Facial Tissue Transfer (Eyelids, Nose, Ears, Lips)
    • Adjacent tissue flap surgery
    • Eyelid reconstruction
    • Nose reconstruction
    • Lip reconstruction
    • Local Flap Surgery
    • Adjacent Tissue Rearrangement
    • Facial Reconstruction

    CPT Codes:

    • 14061: Adjacent tissue transfer or rearrangement, eyelids, nose, ears and/or lips; defect 10.1 sq cm to 30.0 sq cm
    • 14060: Adjacent tissue transfer or rearrangement, eyelids, nose, ears and/or lips; defect 10 sq cm or less

    Also known as:

    • Skin Substitute Graft (Small Wound)
    • Artificial Skin Graft
    • Wound Skin Replacement
    • Bioengineered Skin Application

    CPT Codes:

    • 15271: Application of skin substitute graft to trunk, arms, legs, total wound surface area up to 100 sq cm; first 25 sq cm or less wound surface area

    Also known as:

    • Skin Flap Surgery
    • Tissue Transfer
    • Local Flap Reconstruction
    • Adjacent Tissue Rearrangement

    CPT Codes:

    • 14040: Adjacent tissue transfer or rearrangement, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands and/or feet; defect 10 sq cm or less

    Also known as:

    • Complex Trunk Wound Repair
    • Complex Wound Repair (Scalp, Arms, Legs)
    • Complex Skin Repair on Torso
    • Trunk Laceration Repair
    • Deep Wound Closure (Trunk)
    • Surgical Repair of Torso Wound
    • Complex Laceration Repair
    • Deep Wound Closure
    • Surgical Wound Repair

    CPT Codes:

    • 13100: Repair, complex, trunk; 1.1 cm to 2.5 cm
    • 13120: Repair, complex, scalp, arms, and/or legs; 1.1 cm to 2.5 cm

    Also known as:

    • Nail Removal
    • Nail Plate Avulsion
    • Toenail Removal
    • Fingernail Removal

    CPT Codes:

    • 11730: Avulsion of nail plate, partial or complete, simple; single

    Also known as:

    • Ingrown Toenail Removal
    • Nail Matrix Excision
    • Permanent Nail Removal
    • Deformed Nail Surgery
    • Toenail Avulsion

    CPT Codes:

    • 11750: Excision of nail and nail matrix, partial or complete (eg, ingrown or deformed nail), for permanent removal;

    Also known as:

    • Skin Flap Surgery (Trunk)
    • Adjacent tissue transfer
    • Local flap surgery
    • Skin rearrangement

    CPT Codes:

    • 14000: Adjacent tissue transfer or rearrangement, trunk; defect 10 sq cm or less

    Also known as:

    • Skin Flap Surgery (Medium)
    • Tissue Rearrangement Surgery
    • Local Flap Surgery
    • Skin Graft (Adjacent Tissue)

    CPT Codes:

    • 14301: Adjacent tissue transfer or rearrangement, any area; defect 30.1 sq cm to 60.0 sq cm

    Also known as:

    • Excimer Laser Treatment for Psoriasis
    • Laser Psoriasis Therapy
    • UVB Laser for Psoriasis
    • Psoriasis Light Therapy

    CPT Codes:

    • 96922: Excimer laser treatment for psoriasis; over 500 sq cm

    Also known as:

    • Freezing Removal of Penile Lesions
    • Cryosurgery for Penile Warts
    • Penile Lesion Cryotherapy
    • Condyloma Freezing

    CPT Codes:

    • 54056: Destruction of lesion(s), penis (eg, condyloma, papilloma, molluscum contagiosum, herpetic vesicle), simple; cryosurgery

    Also known as:

    • Penis Biopsy
    • Penile Biopsy
    • Tissue Sample from Penis
    • Male Genital Biopsy

    CPT Codes:

    • 54100: Biopsy of penis; (separate procedure)

    Also known as:

    • Eyelid Skin Biopsy
    • Eyelid Biopsy
    • Lid Margin Biopsy
    • Eyelid Lesion Biopsy

    CPT Codes:

    • 67810: Incisional Biopsy Of Eyelid Skin Including Lid Margin

    Also known as:

    • External Ear Biopsy
    • Outer Ear Biopsy
    • Ear Skin Biopsy
    • Ear Tissue Sample

    CPT Codes:

    • 69100: Biopsy external ear

    Does Dr. Nahm accept my insurance?

    Dr. Nahm accepts most major insurance plans. Important: Please call our office at (858) 278-8835 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Nahm accept in San Diego, CA?

    Dr. Nahm in San Diego, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Alliance Resource Partners

    • Astiva Health

    • Blue Shield of California

    • Crown Cork and Seal Company

    • Express Scripts

    • Medicare

    • Other Health Care Provider

    • Scripps Health

    • State of Arizona

    View All Insurances

    Where is Dr. Nahm's office located?

    Dr. Walter Nahm's Primary Practice

    7695 Cardinal Ct Ste 200

    San Diego, CA 92123

    (858) 278-8835

    Get Directions

    What is Dr. Nahm's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Nahm's National Provider Identifier (NPI) number is 1467447284.

    What common questions do patients ask about Dr. Nahm?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Nahm

    What is Dr. Walter Nahm's specialty?

    Dr. Nahm is a Dermatologist near San Diego, CA. Dermatologists are medical professionals trained to diagnose and treat a wide range of skin conditions in both children and adults, including skin cancers, melanomas, and other tumors. They also manage disorders of the mouth, external genitalia, hair, and nails, and are skilled in treating conditions like dermatitis, allergic reactions, and skin manifestations of systemic diseases. Dermatologists receive specialized training in dermatopathology and dermatologic surgical techniques, and address cosmetic issues such as hair loss and scarring. Additionally, they use laboratory methods to diagnose immune-related skin disorders, often collaborating with immunohematologists for expert consultation and targeted therapies. Contact Dr. Nahm to book an appointment today.

    Is this Dr. Walter Nahm affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Nahm is affiliated with Kaiser Permanente San Diego Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    Where can I learn more about Dermatologist?

    Explore Dermatologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Walter Nahm accepting new patients in San Diego, CA?

    Yes, Dr. Walter Nahm is accepting new patients at this time.

    Does Dr. Walter Nahm offer online booking?

    Please contact Dr. Nahm's office at (858) 278-8835 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Walter Nahm?

    Please contact Dr. Nahm's office at (858) 278-8835 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Walter Nahm have?

    Dr. Walter Nahm is certified by the American Board of Dermatology.

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