Looking for a specialist who listens and takes your insurance? Ask patients in our community. Compare real-world patient outcomes, lab numbers, and doctor visit tips—100% free with a private @handle and zero login wall.
Click to Ask a Question or Post Your Experience ▾
Post to Gut, Labs & Supplements Space (15 Seconds • No Account or Email Required)
Or read existing discussions in Gut, Labs & Supplements Space →
749,040 Verified U.S. Physicians • 51 States & Territories • Zero Sponsored Placements
Preparing for an appointment? Jump to our 60-Second Visit Script Builder ↓

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

CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR), SGLT2i/finerenone nephron preservation, resistant hypertension, and kidney stone metabolic workups. Filter by your insurance carrier, state, or procedure below.

4. Complete Physician Directory

All Nephrology Physicians (2,364)

Page 1 of 66
Nephrology ★ 4.9

Dr. Swarna Byri, MD

Manteca, CA 95336

★★★★★ 5.0 (26)
76th CA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (3,526 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.9

Dr. Paritosh Tiwari, MD

Bourbonnais, IL 60914

★★★★★ 5.0 (26)
99th IL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (4,299 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.8

Dr. Maria Story, MD

West Burlington, IA 52655

★★★★★ 5.0 (26)
63rd IA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,481 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.9

Dr. Kevin Sperling, MD

Chadds Ford, PA 19317

★★★★★ 4.9 (25)
88th PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,416 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7

Dr. Hammad Siddiqui, MD

Lexington, KY 40504

★★★★★ 4.9 (26)
44th KY Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,954 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Sathish Sanna, MBBS

Sun City West, AZ 85375

★★★★★ 4.9 (26)
73rd AZ Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,852 CMS services/yr).

✓ Accepts Medicare Part B ~$207 Cash
Nephrology ★ 4.8

Dr. Gerald Shovlin, DO

Sayre, PA 18840

★★★★★ 4.9 (26)
49th PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,463 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7

Dr. Fatima Asghar, MD

Toms River, NJ 08755

★★★★★ 4.9 (26)
49th NJ Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,018 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Veeraish Chauhan, MD

Lakewood Ranch, FL 34202

★★★★★ 4.9 (25)
71st FL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (3,027 CMS services/yr).

✓ Accepts Medicare Part B ~$216 Cash
Nephrology ★ 4.8

Dr. Bassim Assioun, MD

O Fallon, IL 62269

★★★★★ 4.9 (25)
71st IL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,875 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.9

Dr. Alla Maslova, MD

Brooklyn, NY 11235

★★★★★ 4.9 (25)
98th NY Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (9,392 CMS services/yr).

✓ Accepts Medicare Part B ~$232 Cash
Nephrology ★ 4.8

Dr. Casey Gashti, MD

Chicago, IL 60607

★★★★★ 4.9 (25)
68th IL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,727 CMS services/yr).

✓ Accepts Medicare Part B ~$222 Cash
Nephrology ★ 4.7

Dr. Muhammad Shakoor, MD

Weymouth, MA 02190

★★★★★ 4.9 (25)
28th MA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,024 CMS services/yr).

✓ Accepts Medicare Part B ~$224 Cash
Nephrology ★ 4.7

Dr. Jared Keith, MD

Boone, NC 28607

★★★★★ 4.9 (25)
28th NC Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,175 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7

Dr. Reynaldo Matute, MD

Murrells Inlet, SC 29576

★★★★★ 4.9 (26)
37th SC Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,021 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.9

Dr. Jessica Cruz Whitley, MD

Chula Vista, CA 91911

★★★★★ 4.9 (26)
96th CA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,447 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.9

Dr. Muniba Javed, MD

Edmonds, WA 98026

★★★★★ 4.9 (26)
99th WA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (13,390 CMS services/yr).

✓ Accepts Medicare Part B ~$222 Cash
Nephrology ★ 4.8

Dr. Jie Shi Yan, MD

Simi Valley, CA 93065

★★★★★ 4.9 (25)
56th CA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,297 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.7

Dr. Swathi Lavudi, MD

Grand Island, NE 68803

★★★★★ 4.8 (26)
52nd NE Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,763 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Rabia Al Sbaiti, MD

Lemoyne, PA 17043

★★★★★ 4.8 (26)
65th PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,675 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.6

Dr. Vikram Beemidi, MD

Clarksdale, MS 38614

★★★★★ 4.8 (26)
31st MS Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,579 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7

Dr. Michael Comer, DO

Utica, MI 48317

★★★★★ 4.8 (26)
47th MI Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,547 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Nicholas Nagrani, MD

Pensacola, FL 32504

★★★★★ 4.8 (25)
90th FL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (4,642 CMS services/yr).

✓ Accepts Medicare Part B ~$216 Cash
Nephrology ★ 4.8

Dr. Karl Roos, MD

Mankato, MN 56002

★★★★★ 4.8 (25)
99th MN Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (13,244 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Collette Akhimiona, MD

Philadelphia, PA 19102

★★★★★ 4.8 (25)
81st PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,136 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.9

Dr. David Fendley, MD

Louisville, KY 40202

★★★★★ 4.8 (26)
98th KY Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (5,519 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Arika Gupta, MD

Reno, NV 89511

★★★★★ 4.8 (25)
96th NV Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (5,370 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Ramy Fayad, MD

Toledo, OH 43606

★★★★★ 4.8 (25)
84th OH Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,253 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Dinesh Bhatia, MD

Atlanta, GA 30308

★★★★★ 4.8 (25)
85th GA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (4,776 CMS services/yr).

✓ Accepts Medicare Part B ~$210 Cash
Nephrology ★ 4.7

Dr. Atif Fakhruddin, MD

Oswego, IL 60543

★★★★★ 4.8 (25)
63rd IL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (2,550 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.6
★★★★★ 4.8 (25)
19th IL Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,140 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.8

Dr. Adeel Siddiqui, MD

Lebanon, PA 17042

★★★★★ 4.8 (26)
99th PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (4,318 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8

Dr. Andrew Lazar, MD

Beachwood, OH 44122

★★★★★ 4.8 (26)
93rd OH Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (3,238 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.6

Dr. Onweli Ogbolu, MD

Suffolk, VA 23434

★★★★★ 4.8 (26)
25th VA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (1,262 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7

Dr. Melissa Isbell, MD

San Antonio, TX 78229

★★★★★ 4.7 (26)
91st TX Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (5,199 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.6

Dr. Uma Kannapadi, MD

Natrona Heights, PA 15065

★★★★★ 4.7 (26)
21st PA Pct

Top Billed Procedure: Chronic Kidney Disease eGFR, uACR & Electrolyte Management [CPT 99214] • CKD staging via eGFR + Cystatin C and urine albumin-to-creatinine ratio (uACR) & subspecialty diagnostics (955 CMS services/yr).

✓ Accepts Medicare Part B ~$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.