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Dr. Michael Keller, MD

San Antonio, TX

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Keller, Colon & Rectal Surgeon (Proctologist) in San Antonio, TX?

    Dr. Michael Keller, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in San Antonio, TX with 2 additional practice locations. He is board certified. Dr. Keller graduated from University of Texas Medical School, Houston. Dr. Keller is fluent in English and Spanish, and is currently seeing new patients. Dr. Keller’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Keller’s office at (210) 614-0880.

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

    • Medical School: University of Texas Medical School, Houston

    Is Dr. Keller board certified as a Colon & Rectal Surgeon (Proctologist)?

    Yes, Dr. Michael Keller, MD is board certified by the American Board of Surgery

    What languages does Dr. Keller speak?

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

    • English

    • Spanish

    What conditions does Dr. Keller treat?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Keller 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. Keller. 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:

    • Colon Cancer Screening
    • Health Screening
    • Colorectal Cancer Screening (PDQ®)
    • Screening Tests to Detect Colorectal Cancer and Polyps
    • Tests to Detect Colorectal Cancer and Polyps
    • Colorectal Cancer Screening
    • Colonoscopy Screening
    • Bowel Cancer Screening

    ICD-10 Codes:

    • Z1211: Encounter for screening for malignant neoplasm of colon

    Also known as:

    • Colorectal Cancer
    • Rectal cancer
    • Colon cancer
    • Bowel cancer
    • Malignant neoplasm of rectum
    • Malignant neoplasm of sigmoid colon
    • Colon Cancer
    • Ascending Colon Cancer
    • Bowel Cancer
    • Colorectal Carcinoma
    • Malignant neoplasm of cecum
    • Hepatic Flexure Cancer

    ICD-10 Codes:

    • C20: Malignant neoplasm of rectum
    • C187: Malignant neoplasm of sigmoid colon
    • C182: Malignant neoplasm of ascending colon
    • C180: Malignant neoplasm of cecum
    • C183: Malignant neoplasm of hepatic flexure

    Also known as:

    • Third Degree Hemorrhoids
    • Hemorrhoids
    • Prolapsed hemorrhoids
    • Grade 3 hemorrhoids
    • Severe hemorrhoids

    ICD-10 Codes:

    • K642: Third degree hemorrhoids

    Also known as:

    • Anal Fistula
    • Anal Disorder
    • Fistulas
    • Perianal Fistula
    • Fistula-in-Ano
    • Abnormal Anal Tract

    ICD-10 Codes:

    • K603: Anal fistula

    Also known as:

    • Large Intestine Diverticulitis
    • Large Intestine Diverticulitis with Perforation and Abscess
    • Diverticulosis and Diverticulitis
    • Abscess
    • Inflamed Colon Diverticula
    • Colon Diverticular Inflammation
    • Inflamed Colon Diverticula with Abscess
    • Perforated Large Bowel Diverticulitis

    ICD-10 Codes:

    • K5732: Diverticulitis of large intestine without perforation or abscess without bleeding
    • K5720: Diverticulitis of large intestine with perforation and abscess without bleeding

    Also known as:

    • Chronic Anal Fissure
    • Anal Disorder
    • Long-Term Anal Tear
    • Persistent Rectal Fissure
    • Chronic Fissure in Anus

    ICD-10 Codes:

    • K601: Chronic anal fissure

    Also known as:

    • Vascular Access Device Management
    • Vascular Access Care
    • Port Management
    • Catheter Care

    ICD-10 Codes:

    • Z452: Encounter for adjustment and management of vascular access device

    Also known as:

    • Rectal Bleeding
    • Gastrointestinal Bleeding
    • Gastrointestinal (GI) Bleeding
    • Anal Bleeding
    • Blood in Stool
    • Lower GI Bleed

    ICD-10 Codes:

    • K625: Hemorrhage of anus and rectum

    Also known as:

    • Other Anal and Rectal Condition
    • Anal Disorder
    • Rectal Disorder
    • Proctitis
    • Anal Disorders
    • Rectal Disorders

    ICD-10 Codes:

    • K6289: Other specified diseases of anus and rectum

    Also known as:

    • Digestive System Surgery Aftercare
    • After Surgery
    • Post-gastrointestinal surgery care
    • Stomach surgery aftercare
    • Bowel surgery recovery

    ICD-10 Codes:

    • Z48815: Encounter for surgical aftercare following surgery on the digestive system

    Also known as:

    • Genital Warts
    • Venereal Warts
    • HPV Warts
    • Anogenital Warts

    ICD-10 Codes:

    • A630: Anogenital (venereal) warts

    Also known as:

    • History of rectal or anal cancer
    • Colorectal Cancer
    • Past rectal cancer
    • Anal cancer survivor
    • Previous rectosigmoid malignancy

    ICD-10 Codes:

    • Z85048: Personal history of other malignant neoplasm of rectum, rectosigmoid junction, and anus

    Also known as:

    • Complete Bowel Incontinence
    • Bowel Incontinence
    • Full fecal incontinence
    • Total loss of bowel control
    • Severe accidental bowel leakage

    ICD-10 Codes:

    • R159: Full incontinence of feces

    Also known as:

    • Incisional Hernia
    • Hernia
    • Post-surgical Hernia
    • Surgical Incision Hernia
    • Scar Hernia

    ICD-10 Codes:

    • K432: Incisional hernia without obstruction or gangrene

    Also known as:

    • Fecal Smearing
    • Bowel Movement
    • Stool Smearing
    • Fecal Leakage
    • Soiling

    ICD-10 Codes:

    • R151: Fecal smearing

    What procedures does Dr. Keller perform?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Keller 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. Keller. 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:

    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Colonoscopy Through Stoma
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Stoma Colonoscopy
    • Diagnostic Stoma Scope
    • Colostomy Colonoscopy

    CPT Codes:

    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 44388: Colonoscopy through stoma; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • Removal of Multiple Hemorrhoids
    • Hemorrhoidectomy
    • Internal and External Hemorrhoid Surgery
    • Piles Removal Surgery

    CPT Codes:

    • 46260: Hemorrhoidectomy, internal and external, 2 or more columns/groups;

    Also known as:

    • Flexible Sigmoidoscopy
    • Colorectal Cancer Screening Tests
    • Sigmoidoscopy
    • Lower colon exam
    • Flexible colon scope
    • Rectum and lower colon check

    CPT Codes:

    • 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • Flexible Sigmoidoscopy with Biopsy
    • Diagnostic Upper Endoscopy with Biopsy
    • Colonoscopy with Injections
    • Colorectal Cancer Screening Tests
    • Colonoscopy
    • Sigmoid Colon Scope with Biopsy
    • Lower Endoscopy with Tissue Sample
    • Flexible Sigmoidoscopy and Biopsy
    • Rectum and Lower Colon Exam
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy

    CPT Codes:

    • 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance

    Also known as:

    • Anal Fistula Surgery
    • Fistulectomy
    • Fistulotomy
    • Intersphincteric Fistula Repair
    • Perianal Fistula Surgery

    CPT Codes:

    • 46275: Surgical treatment of anal fistula (fistulectomy/fistulotomy); intersphincteric

    Also known as:

    • Hemorrhoid Removal Surgery
    • Hemorrhoidectomy
    • Piles Surgery
    • Internal and External Hemorrhoid Excision

    CPT Codes:

    • 46255: Hemorrhoidectomy, internal and external, single column/group;

    Also known as:

    • Anal Fissure Removal with Muscle Release
    • Fissurectomy
    • Sphincterotomy
    • Anal Fissure Repair
    • Chronic Fissure Surgery

    CPT Codes:

    • 46200: Fissurectomy, including sphincterotomy, when performed

    Also known as:

    • Upper Endoscopy with Biopsy
    • Biopsy
    • Endoscopy
    • EGD with Biopsy
    • Gastroscopy with Biopsy
    • Esophagogastroduodenoscopy with Biopsy

    CPT Codes:

    • 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple

    Also known as:

    • Surgical Anorectal Exam with Anesthesia
    • Anesthesia
    • Diagnostic anorectal exam under anesthesia
    • Rectal exam with general anesthesia
    • Anorectal surgery for diagnosis

    CPT Codes:

    • 45990: Anorectal exam, surgical, requiring anesthesia (general, spinal, or epidural), diagnostic

    Also known as:

    • Anal Lesion Excision
    • Removal of Anal Warts
    • Surgical Excision of Anal Lesions
    • Anus Lesion Removal

    CPT Codes:

    • 46922: Destruction of lesion(s), anus (eg, condyloma, papilloma, molluscum contagiosum, herpetic vesicle), simple; surgical excision

    Also known as:

    • Hemorrhoid Removal with Rubber Band Ligation
    • Rubber Band Ligation for Hemorrhoids
    • Internal Hemorrhoid Ligation
    • Banding of Hemorrhoids
    • Hemorrhoid Banding

    CPT Codes:

    • 46221: Hemorrhoidectomy, internal, by rubber band ligation(s)

    Also known as:

    • Inserting a Long-Term IV Port (Central Line)
    • Tunneled central venous catheter insertion
    • Subcutaneous port placement
    • Central line with port

    CPT Codes:

    • 36561: Insertion of tunneled centrally inserted central venous access device, with subcutaneous port; age 5 years or older

    Also known as:

    • Tunneled Central Venous Catheter Removal
    • Central Line Explant
    • Port-a-Cath Removal
    • Implantable Venous Access Device Removal
    • Tunneled Catheter Extraction

    CPT Codes:

    • 36590: Removal of tunneled central venous access device, with subcutaneous port or pump, central or peripheral insertion

    Does Dr. Keller accept my insurance?

    Dr. Keller accepts most major insurance plans. Important: Please call our office at (210) 614-0880 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Keller accept in San Antonio, TX?

    Dr. Keller in San Antonio, TX accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene

    • Crown Cork and Seal Company

    • CVS Health (formerly Aetna)

    • Health Care Service Corporation (HCSC)

    • Medicare

    • MedImpact

    • Oscar Health Insurance Co

    • Other Health Care Provider

    • State of Tennessee

    • UnitedHealthcare

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    Where is Dr. Keller's office located?

    Dr. Michael Keller's Primary Practice

    7950 Floyd Curl Dr Ste 101

    San Antonio, TX 78229

    (210) 614-0880

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    Dr. Michael Keller's Practice 2

    5206 Research Dr

    San Antonio, TX 78240

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    Dr. Michael Keller's Practice 3

    18707 Hardy Oak Blvd Ste 320

    San Antonio, TX 78258

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

    Dr. Keller's National Provider Identifier (NPI) number is 1659572824.

    What common questions do patients ask about Dr. Keller?

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

    What is Dr. Michael Keller's specialty?

    Dr. Keller is a Colon & Rectal Surgeon (Proctologist) near San Antonio, TX. A colon and rectal surgeon possesses the expertise to diagnose and treat a variety of ailments affecting the intestinal tract, including the colon, rectum, anal canal, and perianal area, through both medical and surgical interventions. Furthermore, this professional also engages with other organs and tissues, including the liver, urinary system, and female reproductive system, that are relevant to primary intestinal disorders. Contact Dr. Keller to book an appointment today.

    Is this Dr. Michael Keller affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Keller is affiliated with Methodist Hospital - San Antonio, Baptist Medical Center - San Antonio, Methodist Hospital Specialty and Transplant, DeTar Hospital Navarro which are a Castle Connolly Top Hospitals. 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 Colon & Rectal Surgeon (Proctologist)?

    Explore Colon & Rectal Surgeon (Proctologist) 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 Michael Keller accepting new patients in San Antonio, TX?

    Yes, Dr. Michael Keller is accepting new patients at this time.

    Does Dr. Michael Keller offer online booking?

    Please contact Dr. Keller's office at (210) 614-0880 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Michael Keller?

    Please contact Dr. Keller's office at (210) 614-0880 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Michael Keller have?

    Dr. Michael Keller is certified by the American Board of Surgery.

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