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Gastroenterology Doctors Who Perform the Procedure You Need—and Take Your Insurance.

Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385), upper GI endoscopy / EGD for GERD & Barrett’s (CPT 43239), and FibroScan liver elastography (CPT 91200). Filter by your insurance carrier, state, or procedure below.

4. Complete Physician Directory

All Gastroenterology Physicians (3,529)

Page 21 of 99

Dr. Don Roberts, MD

Moultrie, GA 31768

★★★★★ 4.6 (22)
40th GA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,192 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Michael Hersh, MD

Buffalo Grove, IL 60089

★★★★★ 4.6 (18)
50th IL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,228 CMS services/yr).

✓ Accepts UnitedHealthcare ~$218 Cash

Dr. Michael Riverso, DO

Wyomissing, PA 19610

★★★★★ 4.6 (18)
88th PA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (7,572 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Mukul Khandelwal, MD

Pasadena, MD 21122

★★★★★ 4.6 (26)
17th MD Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (821 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Hashim Khandwalla, MD

Houston, TX 77024

★★★★★ 4.6 (26)
94th TX Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (9,619 CMS services/yr).

✓ Accepts UnitedHealthcare ~$212 Cash

Dr. Newton Muthunayagam, MD

Middleburg Heights, OH 44130

★★★★★ 4.6 (22)
50th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,180 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Monica Zeitz, MD

Glen Mills, PA 19342

★★★★★ 4.6 (22)
90th PA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (595 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Rajeev Mehta, MD

Miamisburg, OH 45342

★★★★★ 4.6 (18)
42nd OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,048 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Long Dang, MD

Westminster, CA 92683

★★★★★ 4.6 (17)
96th CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (7,432 CMS services/yr).

✓ Accepts UnitedHealthcare ~$239 Cash
★★★★★ 4.6 (25)
91st CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (3,632 CMS services/yr).

✓ Accepts UnitedHealthcare ~$239 Cash

Dr. Yiping Rao, MD

Glen Allen, VA 23059

★★★★★ 4.6 (17)
64th VA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,549 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Steven Schwartz, MD

Concord Twp, OH 44077

★★★★★ 4.6 (21)
15th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (726 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Adam Edwards, MD

Birmingham, AL 35233

★★★★★ 4.6 (17)
83rd AL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (10,761 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Jagannath Sherigar, MD

Richmond, KY 40475

★★★★★ 4.6 (21)
30th KY Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (811 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Paul Mauk, MD

Houston, TX 77024

★★★★★ 4.6 (24)
99th TX Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (4,215 CMS services/yr).

✓ Accepts UnitedHealthcare ~$212 Cash

Dr. Praveen Nallapareddy, MD

East Chicago, IN 46312

★★★★★ 4.6 (24)
68th IN Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,876 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
★★★★★ 4.6 (16)
49th IL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,206 CMS services/yr).

✓ Accepts UnitedHealthcare ~$218 Cash

Dr. Cole Thomson, MD

Houston, TX 77024

★★★★★ 4.6 (24)
98th TX Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (2,238 CMS services/yr).

✓ Accepts UnitedHealthcare ~$212 Cash

Dr. Donald Walters, DO

Butler, PA 16001

★★★★★ 4.6 (20)
36th PA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,230 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Thomas Whelan, MD

Bethel, CT 06801

★★★★★ 4.6 (20)
8th CT Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (747 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Tarun Sharma, MD

Mine Hill, NJ 07803

★★★★★ 4.6 (20)
46th NJ Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,275 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Dale Thomae, DO

Ashland, OH 44805

★★★★★ 4.6 (20)
25th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (819 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Kendall Beck, MD

San Francisco, CA 94143

★★★★★ 4.6 (16)
94th CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (715 CMS services/yr).

✓ Accepts UnitedHealthcare ~$250 Cash

Dr. Mari Ikeguchi, MD

Honolulu, HI 96813

★★★★★ 4.6 (16)
94th HI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (507 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Suresh Jayatilaka, MD

South Boston, VA 24592

★★★★★ 4.6 (19)
69th VA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (2,035 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Satish Sondhi, MD

Mason City, IA 50401

★★★★★ 4.6 (23)
53rd IA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,504 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Loc Le, MD

Baltimore, MD 21208

★★★★★ 4.6 (15)
88th MD Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (6,195 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Michael Curley, MD

Lebanon, NH 03756

★★★★★ 4.6 (15)
64th NH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,304 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
★★★★★ 4.6 (23)
62nd KY Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,195 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Maqsood Khan, MD

West Allis, WI 53227

★★★★★ 4.6 (15)
37th WI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (786 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Vipin Mittal, MD

Albuquerque, NM 87106

★★★★★ 4.6 (19)
95th NM Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (734 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Alan Erdmann, MD

Salem, UT 84653

★★★★★ 4.6 (23)
34th UT Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (991 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Ruth Rawlings, MD

Alamogordo, NM 88310

★★★★★ 4.6 (19)
57th NM Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (2,722 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Keaton Jones, MD

Olympia, WA 98502

★★★★★ 4.6 (19)
81st WA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (4,474 CMS services/yr).

✓ Accepts UnitedHealthcare ~$222 Cash

Dr. Tariq Khan, MD

Granbury, TX 76048

★★★★★ 4.6 (15)
94th TX Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (615 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash

Dr. Rajesh Sharma, MD

Two Rivers, WI 54241

★★★★★ 4.6 (15)
84th WI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (531 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Interactive 60-Second “Show This to Your Doctor” Visit & CPT Builder • Defends Against the 11-Second Interruption Rule (PMID 29972200)

Walk Into Your 15-Minute Appointment With Exact Labs, CPT Codes & Opening Words

Clinicians interrupt patients after a median of 11 seconds (J Gen Intern Med, PMID 29972200). Select your appointment reason below to generate your 1-page script:

15-Minute Exam-Room Agenda • High-Volume Endocrinology

Hypothyroidism, Subclinical TSH Drift (2.5–8.0 mIU/L) or Thyroid Nodule

1. Your 10-Second Opening Script (Read Verbatim Before the 11-Second Interruption)

"I have two specific goals for our 15 minutes today: first, my morning TSH is [X] mIU/L with persistent fatigue and cold intolerance, so I would like to evaluate Free T4, Free T3, TPO Antibodies, and Ferritin together; second, if we palpate any thyroid asymmetry, can we perform an in-office neck ultrasound (CPT 76536)?"

2. In-Office Medicare CPT Procedures to Verify Before Booking
CPT 76536 In-Office High-Resolution Thyroid & Neck Ultrasound

Confirms the endocrinologist images thyroid nodules themselves rather than sending you to a hospital radiology department.

CPT 60100 Ultrasound-Guided Fine-Needle Aspiration (FNA) Biopsy

Identifies structural thyroid specialists vs. general diabetes-only clinics.

3. Exact Blood & Diagnostic Labs to Request on Your Order Sheet
  • ✓ TSH + Free T4 + Free T3 (drawn before 8:30 AM fasting)
  • ✓ Thyroid Peroxidase (TPO) & Thyroglobulin Antibodies (Hashimoto rule-out)
  • ✓ Serum Ferritin + Vitamin D 25(OH)D (required for T4-to-T3 deiodinase conversion)
4. Day-1 Pre-Appointment Rule

Hold all Biotin (Vitamin B7) supplements for 72 hours before your blood draw so streptavidin assay interference does not create a false TSH/Free T4 reading.

Patient Triage & Insurance Verification Guide

Frequently Asked Questions: Choosing a Specialist by CPT Volume & Insurance Network

Why does CMS Medicare Part B procedure volume matter when choosing a specialist?

General directory listings show what a doctor claims to treat, whereas federal CMS Medicare Part B claims reveal what they actually perform every week. For example, seeing an endocrinologist who performs 400+ in-office thyroid neck ultrasounds (CPT 76536) per year or a gastroenterologist in the top decile for adenoma detection colonoscopy (CPT 45385) prevents unnecessary outside imaging referrals and repeat appointments.

How does dotMD prevent health-system lab rollups and low-rated clinics from skewing Page 1?

Large hospital networks often bill tens of thousands of automated lab draws or vaccination claims under a single department chair NPI. Our directory triage engine isolates individual practicing clinicians (300 to 4,500 Medicare beneficiaries/year) and requires a minimum 4.2-star verified Google patient consensus with at least 15 reviews for default showcase rankings.

How does the GreatDoc™ Star Rating separate bedside manner from front-desk billing complaints?

The GreatDoc™ rating—calculated by the Proprietary DotMD™ J3 Model—audits patient reviews across clinical diagnostic accuracy, unhurried listening, and procedure skill while flagging administrative friction points (such as $250 annual clinic fees, parking validation costs, or phone hold times) so you know exactly what to expect before walking into the waiting room.

How do I verify if a doctor takes my specific PPO, HMO, or Medicare plan?

Every flagship physician profile on dotMD includes an interactive Insurance Network & Cash-Rate Checker covering Original Medicare Part B, Medicare Advantage, BlueCross BlueShield, Aetna, Cigna, UnitedHealthcare, and regional PPO/HMO plans—plus the exact CMS geo-adjusted CPT 99204 self-pay cash rate ($195–$260) and 3-question script to verify network participation with the billing desk.