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Dr. William Johnston, MD

Colon & Rectal Surgeon (Proctologist)

New Orleans, LA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Johnston, Colon & Rectal Surgeon (Proctologist) in New Orleans, LA?

    Dr. William Johnston, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in New Orleans, LA with 1 additional practice location. Dr. Johnston is fluent in English and Spanish, and is currently seeing new patients. Dr. Johnston’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Johnston’s office at (504) 842-4060.

    What are Areas of Expertise for Dr. Johnston?

    Dr. William Johnston, MD is a highly-rated, board-certified Colon & Rectal Surgeon (Proctologist) known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Johnston empowers patients to confidently navigate their health journey, specializing in Colon & Rectal Cancer, Diverticulitis, Inflammatory Bowel Disease, or comprehensive wellness support. Serving the New Orleans/LA community, Dr. Johnston is dedicated to enhancing lives through expert, patient-centered care.

    What languages does Dr. Johnston speak?

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

    • English

    • Spanish

    What conditions does Dr. Johnston treat?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Johnston 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. Johnston. 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. Learn more about our claims-based healthcare methodology here.

    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

    ICD-10 Codes:

    • C20: Malignant neoplasm of rectum

    Also known as:

    • First Degree Hemorrhoids
    • Hemorrhoidal Skin Tags
    • Hemorrhoids
    • Internal hemorrhoids
    • Grade 1 hemorrhoids
    • Mild hemorrhoids
    • Anal skin tags
    • Perianal skin tags
    • Leftover hemorrhoid skin

    ICD-10 Codes:

    • K640: First degree hemorrhoids
    • K644: Residual hemorrhoidal skin tags

    Also known as:

    • Intestine Diverticulitis
    • Diverticulosis and Diverticulitis
    • Inflamed Bowel Diverticula
    • Bowel Diverticular Inflammation

    ICD-10 Codes:

    • K5792: Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding

    Also known as:

    • History of rectal or anal cancer
    • History of large intestine cancer
    • Colorectal Cancer
    • Past rectal cancer
    • Anal cancer survivor
    • Previous rectosigmoid malignancy
    • Past colon cancer
    • Colorectal cancer survivor
    • Previous large bowel malignancy

    ICD-10 Codes:

    • Z85048: Personal history of other malignant neoplasm of rectum, rectosigmoid junction, and anus
    • Z85038: Personal history of other malignant neoplasm of large intestine

    Also known as:

    • Anal Fissure
    • Anal Disorder
    • Rectal Tear
    • Fissure in Anus
    • Perianal Fissure

    ICD-10 Codes:

    • K602: Anal fissure, unspecified

    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:

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

    ICD-10 Codes:

    • K625: Hemorrhage of anus and rectum

    What procedures does Dr. Johnston perform?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Johnston 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. Johnston. 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. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Colonoscopy with Polyp Removal
    • Colonoscopy with Biopsy
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Hemorrhoid Ligation
    • Colonoscopy with Tissue Removal
    • Colonoscopy Through Stoma
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Hemorrhoid Banding
    • Colon Exam with Ligation
    • Flexible colonoscopy with EMR
    • Endoscopic mucosal resection (colon)
    • Colon polyp removal during colonoscopy
    • Stoma Colonoscopy
    • Diagnostic Stoma Scope
    • Colostomy Colonoscopy

    CPT Codes:

    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45398: Colonoscopy, flexible; with band ligation(s) (eg, hemorrhoids)
    • 45390: Colonoscopy, flexible; with endoscopic mucosal resection
    • 44388: Colonoscopy through stoma; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    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:

    • 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:

    • Anal Sphincterotomy
    • Anal Fistula Surgery
    • Anal Sphincter Division
    • Internal Sphincterotomy
    • Anal Fissure Surgery
    • Fistulectomy
    • Fistulotomy
    • Anal Fistula Repair
    • Perianal Fistula Repair
    • Intersphincteric Fistula Repair
    • Perianal Fistula Surgery

    CPT Codes:

    • 46080: Sphincterotomy, anal, division of sphincter (separate procedure)
    • 46280: Surgical treatment of anal fistula (fistulectomy/fistulotomy); transsphincteric, suprasphincteric, extrasphincteric or multiple, including placement of seton, when performed
    • 46270: Surgical treatment of anal fistula (fistulectomy/fistulotomy); subcutaneous
    • 46275: Surgical treatment of anal fistula (fistulectomy/fistulotomy); intersphincteric

    Also known as:

    • Anoscopy (Diagnostic)
    • Anoscopy
    • Anal Canal Exam
    • Rectal Scope Exam
    • Anus Diagnostic Procedure

    CPT Codes:

    • 46600: Anoscopy; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • Flexible Sigmoidoscopy with Biopsy
    • Colonoscopy with Injections
    • Endoscopy of Small Intestinal Pouch
    • Colorectal Cancer Screening Tests
    • Colonoscopy
    • Sigmoid Colon Scope with Biopsy
    • Lower Endoscopy with Tissue Sample
    • Flexible Sigmoidoscopy and Biopsy
    • Rectum and Lower Colon Exam
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy
    • Small Bowel Pouch Endoscopy
    • Kock Pouch Evaluation
    • Ileal Reservoir Endoscopy
    • Pouchoscopy

    CPT Codes:

    • 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
    • 44385: Endoscopic evaluation of small intestinal pouch (eg, Kock pouch, ileal reservoir [S or J]); 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:

    • Anal Sphincter Nerve Block
    • Internal Anal Sphincter Chemodenervation
    • Anal Sphincter Injection
    • Botox for Anal Fissure
    • Chemical Denervation of Anal Muscle

    CPT Codes:

    • 46505: Chemodenervation of internal anal sphincter

    Also known as:

    • Rectal Tumor Removal Through Anus
    • Removal of Rectal Tumor
    • Transanal tumor excision
    • Full thickness rectal resection
    • Rectal cancer surgery via anus
    • Transanal Rectal Tumor Excision
    • Partial Thickness Rectal Tumor Removal
    • Rectal Lesion Excision

    CPT Codes:

    • 45172: Excision of rectal tumor, transanal approach; including muscularis propria (ie, full thickness)
    • 45171: Excision of rectal tumor, transanal approach; not including muscularis propria (ie, partial thickness)

    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:

    • Removal of Anal Skin Tags
    • Anal Papillae Excision
    • Perianal Skin Tag Removal
    • Anorectal Tag Excision

    CPT Codes:

    • 46230: Excision of multiple external papillae or tags, anus

    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:

    • Endoscopy and Biopsy of Small Intestine Pouch
    • Kock pouch endoscopy
    • Ileal reservoir evaluation
    • Small bowel pouch biopsy

    CPT Codes:

    • 44386: Endoscopic evaluation of small intestinal pouch (eg, Kock pouch, ileal reservoir [S or J]); with biopsy, single or multiple

    Also known as:

    • Drainage of Perianal Abscess
    • Perianal Abscess Incision
    • Anal Abscess Drainage
    • Superficial Perianal Abscess Treatment

    CPT Codes:

    • 46050: Incision and drainage, perianal abscess, superficial

    Also known as:

    • Sigmoidoscopy with Polyp Removal
    • Colorectal Cancer Screening Tests
    • Flexible Sigmoidoscopy with Polypectomy
    • Colon Polyp Removal (Lower Colon)
    • Sigmoid Colon Lesion Excision
    • Lower Endoscopy with Polyp Removal

    CPT Codes:

    • 45338: Sigmoidoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique

    Also known as:

    • Complicated Pilonidal Cyst Removal
    • Pilonidal Sinus Excision
    • Surgery for Pilonidal Cyst
    • Complex Pilonidal Cystectomy
    • Tailbone Cyst Removal

    CPT Codes:

    • 11772: Excision of pilonidal cyst or sinus; complicated

    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

    Does Dr. Johnston accept my insurance?

    Dr. Johnston accepts most major insurance plans. Important: Please call our office at (504) 842-4060 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Johnston accept in New Orleans, LA?

    Dr. Johnston in New Orleans, LA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • BCBS Unspecified

    • Blue Cross and Blue Shield of Louisiana

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Federal government of the United States

    • Humana

    • Medicare

    • Ochsner Health

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Johnston's office located?

    Dr. William Johnston's Primary Practice

    1514 Jefferson Hwy

    New Orleans, LA 70121

    (504) 842-4060

    Get Directions

    Dr. William Johnston's Practice 2

    1057 Paul Maillard Rd

    Luling, LA 70070

    Get Directions

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

    Dr. Johnston's National Provider Identifier (NPI) number is 1598908253.

    What common questions do patients ask about Dr. Johnston?

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

    What is Dr. William Johnston's specialty?

    Dr. Johnston is a Colon & Rectal Surgeon (Proctologist) near New Orleans, LA. 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. Johnston to book an appointment today.

    Is this Dr. William Johnston affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Johnston is affiliated with Ochsner Medical Center - New Orleans 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 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 William Johnston accepting new patients in New Orleans, LA?

    Yes, Dr. William Johnston is accepting new patients at this time.

    Does Dr. William Johnston offer online booking?

    Please contact Dr. Johnston's office at (504) 842-4060 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with William Johnston?

    Please contact Dr. Johnston's office at (504) 842-4060 for information regarding telehealth appointment availability or for scheduling assistance.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>