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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 62 of 99

Dr. Raghuram Reddy, MD

Columbus, OH 43202

★★★★★ 4.7 (19)
5th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (665 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash
★★★★★ 4.7 (19)
85th OK Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (7,903 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Brian Story, MD

Meridian, ID 83642

★★★★★ 4.7 (23)
79th ID Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,270 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Scott Gabbard, MD

Cleveland, OH 44195

★★★★★ 4.7 (23)
21st OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (778 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Jaroslav Zivny, MD

Worcester, MA 01655

★★★★★ 4.7 (15)
39th MA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (895 CMS services/yr).

✓ Accepts Kaiser Permanente ~$224 Cash

Dr. Sian Chisholm, MD

Fleming Island, FL 32003

★★★★★ 4.7 (15)
27th FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (985 CMS services/yr).

✓ Accepts Kaiser Permanente ~$216 Cash

Dr. Joyce Peji, MD

Atlanta, GA 30342

★★★★★ 4.7 (23)
3rd GA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (655 CMS services/yr).

✓ Accepts Kaiser Permanente ~$210 Cash

Dr. Ronald Brown, MD

Augusta, GA 30901

★★★★★ 4.7 (19)
24th GA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (865 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Steven Josephson, MD

Huntersville, NC 28078

★★★★★ 4.7 (23)
92nd NC Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (13,571 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash
★★★★★ 4.7 (15)
78th FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (3,269 CMS services/yr).

✓ Accepts Kaiser Permanente ~$227 Cash

Dr. Thomas Abernathy, MD

Catonsville, MD 21228

★★★★★ 4.7 (15)
80th MD Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (4,320 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Joseph Cassara, MD

Lafayette, CO 80026

★★★★★ 4.7 (23)
21st CO Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (750 CMS services/yr).

✓ Accepts Kaiser Permanente ~$211 Cash

Dr. Christina Covelli, MD

Tavares, FL 32778

★★★★★ 4.7 (15)
6th FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (687 CMS services/yr).

✓ Accepts Kaiser Permanente ~$216 Cash

Dr. Daniel Pievsky, DO

Westerly, RI 02891

★★★★★ 4.7 (23)
21st RI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (781 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Kais Zakharia, MD

Dearborn, MI 48124

★★★★★ 4.7 (19)
9th MI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (719 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Mirela Onea, MD

Palm Harbor, FL 34684

★★★★★ 4.7 (19)
18th FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (839 CMS services/yr).

✓ Accepts Kaiser Permanente ~$216 Cash

Dr. Eugene Lee, MD

San Mateo, CA 94401

★★★★★ 4.7 (19)
17th CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (803 CMS services/yr).

✓ Accepts Kaiser Permanente ~$239 Cash

Dr. David Barenberg, MD

Danbury, CT 06810

★★★★★ 4.7 (23)
86th CT Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (566 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Ara Sahakian, MD

Los Angeles, CA 90033

★★★★★ 4.7 (19)
11th CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (737 CMS services/yr).

✓ Accepts Kaiser Permanente ~$231 Cash

Dr. Nicole Griglione, MD

Waukesha, WI 53188

★★★★★ 4.7 (15)
2nd WI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (640 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Sirish Sanaka, MD

Greenville, NC 27834

★★★★★ 4.7 (23)
21st NC Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (949 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash
★★★★★ 4.7 (23)
17th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (740 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash
★★★★★ 4.7 (15)
4th AL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (771 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Jeffrey Gellis, DO

Akron, OH 44320

★★★★★ 4.7 (19)
89th OH Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (575 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Arnold Markowitz, MD

New York, NY 10021

★★★★★ 4.7 (23)
81st NY Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (508 CMS services/yr).

✓ Accepts Kaiser Permanente ~$239 Cash

Dr. John Romano, MD

Liverpool, NY 13088

★★★★★ 4.7 (22)
97th NY Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (9,620 CMS services/yr).

✓ Accepts Kaiser Permanente ~$232 Cash

Dr. Alister George, MD

Thousand Oaks, CA 91360

★★★★★ 4.7 (18)
93rd CA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (3,924 CMS services/yr).

✓ Accepts Kaiser Permanente ~$239 Cash

Dr. Peter Eweje, MD

Jacksonville, NC 28546

★★★★★ 4.7 (18)
40th NC Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (2,058 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. John Mcnerney, MD

Tucson, AZ 85712

★★★★★ 4.7 (22)
73rd AZ Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,892 CMS services/yr).

✓ Accepts Kaiser Permanente ~$207 Cash

Dr. Robert Flynn, MD

North Chesterfield, VA 23236

★★★★★ 4.7 (18)
62nd VA Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,477 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Richard Dobhan, MD

Pensacola, FL 32504

★★★★★ 4.7 (18)
93rd FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (9,165 CMS services/yr).

✓ Accepts Kaiser Permanente ~$216 Cash

Dr. Brent Ginsberg, MD

Kansas City, MO 64132

★★★★★ 4.7 (18)
49th MO Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,232 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. John Rizzo, MD

New Hyde Park, NY 11042

★★★★★ 4.7 (22)
69th NY Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,923 CMS services/yr).

✓ Accepts Kaiser Permanente ~$232 Cash

Dr. Emily Rostholder, MD

Jacksonville, FL 32256

★★★★★ 4.7 (18)
95th FL Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (12,417 CMS services/yr).

✓ Accepts Kaiser Permanente ~$216 Cash

Dr. Ayotokunbo Olosunde, MD

Texarkana, TX 75503

★★★★★ 4.7 (18)
48th TX Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (1,270 CMS services/yr).

✓ Accepts Kaiser Permanente ~$209 Cash

Dr. Dilip Desai, MD

Flint, MI 48507

★★★★★ 4.7 (22)
24th MI Pct

Top Billed Procedure: Established Gastroenterology, GERD & IBD Evaluation [CPT 99214] • Diagnostic & screening colonoscopy with polypectomy (CPT 45378 / 45385) & subspecialty diagnostics (881 CMS services/yr).

✓ Accepts Kaiser Permanente ~$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.