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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 12 of 66
Nephrology ★ 4.7
★★★★★ 4.7 (24)
45th 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 (1,564 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.5

Dr. Harold Helton, MD

Somerset, KY 42503

★★★★★ 4.7 (24)
16th 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 (1,037 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Igor Kagan, MD

Los Angles, CA 90024

★★★★★ 4.7 (19)
70th 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 (3,036 CMS services/yr).

✓ Accepts UnitedHealthcare ~$239 Cash
Nephrology ★ 4.8

Dr. Farheen Shah-Khan, MD

Chicago, IL 60642

★★★★★ 4.7 (19)
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 (10,760 CMS services/yr).

✓ Accepts UnitedHealthcare ~$222 Cash
Nephrology ★ 4.7

Dr. Yudh Gupta, MD

Washington, DC 20010

★★★★★ 4.7 (19)
90th DC 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 (3,523 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Sherwin Foster, MD

Hayden, ID 83835

★★★★★ 4.7 (19)
95th ID 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 (5,058 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Geoffrey Alilonu, MD

Northport, AL 35473

★★★★★ 4.7 (15)
91st AL 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 (6,025 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7
★★★★★ 4.7 (19)
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 (2,289 CMS services/yr).

✓ Accepts UnitedHealthcare ~$239 Cash
Nephrology ★ 4.8

Dr. Ryyan Hyder, MD

Elk Grove Village, IL 60007

★★★★★ 4.7 (23)
86th 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 (1,308 CMS services/yr).

✓ Accepts UnitedHealthcare ~$218 Cash
Nephrology ★ 4.8
★★★★★ 4.7 (19)
99th 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 (19,977 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.6

Dr. Michael Seidman, MD

Ogdensburg, NY 13669

★★★★★ 4.7 (15)
49th 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 (1,468 CMS services/yr).

✓ Accepts UnitedHealthcare ~$232 Cash
Nephrology ★ 4.8

Dr. Michael Holland, MD

North Myrtle Beach, SC 29582

★★★★★ 4.7 (23)
92nd 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 (5,239 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Stephen Schinker, MD

Phoenix, AZ 85004

★★★★★ 4.7 (18)
78th 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 (4,475 CMS services/yr).

✓ Accepts UnitedHealthcare ~$207 Cash
Nephrology ★ 4.6

Dr. Dasaradha Uyyala, MD

Hot Springs National Park, AR 71913

★★★★★ 4.7 (18)
27th AR 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 (1,359 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Nabeel Ahmed, MD

Tyler, TX 75701

★★★★★ 4.7 (26)
90th 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 (4,628 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Cody Cobb, MD

Shenandoah, TX 77384

★★★★★ 4.7 (26)
96th 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 (1,721 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.6

Dr. Sanjay Kumar, MD

Walterboro, SC 29488

★★★★★ 4.7 (26)
55th 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 (2,696 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Chijioke Ogbu, MD

Corpus Christi, TX 78404

★★★★★ 4.7 (22)
87th 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 (3,999 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Sarah Sundet, DO

Festus, MO 63028

★★★★★ 4.7 (26)
69th MO 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 (1,838 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Eric Ong, MD

Edmonds, WA 98026

★★★★★ 4.7 (18)
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 (31,253 CMS services/yr).

✓ Accepts UnitedHealthcare ~$222 Cash
Nephrology ★ 4.8

Dr. Matthew Reed, MD

Wichita, KS 67214

★★★★★ 4.7 (25)
95th KS 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 (10,134 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Venkat Vavilala, MD

Merrillville, IN 46410

★★★★★ 4.7 (17)
91st IN 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 (3,831 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Phillip Madonia, MD

Alabaster, AL 35007

★★★★★ 4.7 (21)
67th AL 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 (2,221 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Babak Razi, MD

Riverdale, MD 20737

★★★★★ 4.7 (17)
85th MD 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 (2,994 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Fred Lui, MD

San Francisco, CA 94133

★★★★★ 4.7 (25)
53rd 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 (2,238 CMS services/yr).

✓ Accepts UnitedHealthcare ~$250 Cash
Nephrology ★ 4.6

Dr. Eric Manning, MD

Hillsborough, NJ 08844

★★★★★ 4.7 (25)
39th 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 (1,695 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Shivakanth Burugu, MD

New Iberia, LA 70563

★★★★★ 4.7 (25)
58th LA 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 (2,207 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Dusan Dragovic, MD

Coconut Creek, FL 33073

★★★★★ 4.7 (21)
66th 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 (2,695 CMS services/yr).

✓ Accepts UnitedHealthcare ~$216 Cash
Nephrology ★ 4.6

Dr. Michael Yu, MD

Bellaire, TX 77401

★★★★★ 4.7 (17)
30th 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 (1,311 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.6

Dr. Wei Boon Ooi, MD

Kailua Kona, HI 96740

★★★★★ 4.7 (25)
64th HI 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 (1,513 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8
★★★★★ 4.7 (24)
88th KS 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 (3,743 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. Sina Emami, MD

Encino, CA 91436

★★★★★ 4.7 (16)
66th 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 (2,783 CMS services/yr).

✓ Accepts UnitedHealthcare ~$239 Cash
Nephrology ★ 4.7

Dr. Ravi Ramsamooj, MD

Elizabeth City, NC 27909

★★★★★ 4.7 (24)
61st 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 (1,907 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.8

Dr. Heather Mascio, DO

Chester, PA 19013

★★★★★ 4.7 (24)
96th 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 (3,559 CMS services/yr).

✓ Accepts UnitedHealthcare ~$209 Cash
Nephrology ★ 4.7

Dr. George Soryal, MD

Slingerlands, NY 12159

★★★★★ 4.7 (16)
85th 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 (5,146 CMS services/yr).

✓ Accepts UnitedHealthcare ~$232 Cash
Nephrology ★ 4.7

Dr. Peter Santos, DO

Glendale, AZ 85308

★★★★★ 4.7 (16)
67th 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 (3,217 CMS services/yr).

✓ Accepts UnitedHealthcare ~$207 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.