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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 24 of 66
Nephrology ★ 4.7

Dr. Kenneth Kovach, MD

Wichita, KS 67214

★★★★★ 4.9 (19)
68th 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 (4,860 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.5

Dr. Marc Mckinley, DO

Panama City, FL 32401

★★★★★ 4.9 (19)
17th 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 (1,190 CMS services/yr).

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

Dr. Deep Phachu, MD

Worcester, MA 01608

★★★★★ 4.9 (19)
85th 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 (3,001 CMS services/yr).

✓ Accepts Medicare Part B ~$224 Cash
Nephrology ★ 4.8

Dr. Mark Albright, MD

Colorado Springs, CO 80909

★★★★★ 4.9 (15)
94th CO 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 (3,720 CMS services/yr).

✓ Accepts Medicare Part B ~$211 Cash
Nephrology ★ 4.7

Dr. Tedine Ranich, MD

Lutherville, MD 21093

★★★★★ 4.9 (23)
48th 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 (1,678 CMS services/yr).

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

Dr. Chitra Nathan, MD

Greenville, SC 29605

★★★★★ 4.9 (19)
38th 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 (2,071 CMS services/yr).

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

Dr. Jaime Jimenez Lopez, MD

Eau Claire, WI 54703

★★★★★ 4.9 (19)
48th WI 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 (1,206 CMS services/yr).

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

Dr. Fadi Abuhmaid, MD

Allen Park, MI 48101

★★★★★ 4.9 (19)
72nd 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 (2,234 CMS services/yr).

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

Dr. Konstantin Abramov, MD

Worcester, MA 01655

★★★★★ 4.9 (19)
38th 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 (1,199 CMS services/yr).

✓ Accepts Medicare Part B ~$224 Cash
Nephrology ★ 4.5

Dr. Emily Sun, MD

Fayetteville, NC 28304

★★★★★ 4.9 (19)
18th 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 (1,003 CMS services/yr).

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

Dr. Steven Gruber, MD

New York, NY 10003

★★★★★ 4.9 (23)
29th 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 (992 CMS services/yr).

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

Dr. Iram Aqeel, MD

Seattle, WA 98104

★★★★★ 4.9 (19)
56th 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 (1,604 CMS services/yr).

✓ Accepts Medicare Part B ~$225 Cash
Nephrology ★ 4.5

Dr. Hooman Sadr, MD

Norfolk, VA 23510

★★★★★ 4.9 (15)
22nd 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 (1,203 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.5

Dr. Oleg Rubin, MD

Fairfield, CA 94534

★★★★★ 4.9 (19)
20th 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 (1,198 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.6

Dr. Varun Malhotra, MD

Johnstown, PA 15904

★★★★★ 4.9 (23)
51st 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 (1,488 CMS services/yr).

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

Dr. David Desoto, MD

Hot Springs, AR 71913

★★★★★ 4.9 (23)
44th 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 (1,767 CMS services/yr).

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

Dr. Graham Abra, MD

Stanford, CA 94305

★★★★★ 4.9 (19)
20th 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 (1,207 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.8

Dr. Ramdas Kumar, MD

Thousand Oaks, CA 91360

★★★★★ 4.9 (22)
91st 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 (7,347 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.6

Dr. Shen Song, MD

Mount Prospect, IL 60056

★★★★★ 4.9 (18)
60th 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 (2,460 CMS services/yr).

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

Dr. Grady Wick, MD

Elk Grove Village, IL 60007

★★★★★ 4.9 (18)
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 (3,643 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.7

Dr. Syed Hammad Alam, MD

Huntsville, AL 35801

★★★★★ 4.9 (18)
79th 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 (2,908 CMS services/yr).

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

Dr. William Duff, MD

Louisville, KY 40205

★★★★★ 4.9 (18)
62nd 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 (2,575 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.7
★★★★★ 4.9 (18)
45th OK 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 (1,935 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.8
★★★★★ 4.9 (22)
81st 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 (2,159 CMS services/yr).

✓ Accepts Medicare Part B ~$209 Cash
Nephrology ★ 4.6
★★★★★ 4.9 (22)
50th CT 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 (1,441 CMS services/yr).

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

Dr. Yelena Rosenberg, MD

Mineola, NY 11501

★★★★★ 4.9 (22)
79th 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 (4,061 CMS services/yr).

✓ Accepts Medicare Part B ~$232 Cash
Nephrology ★ 4.6

Dr. Samer Sader, MD

Peoria, IL 61603

★★★★★ 4.9 (18)
45th 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 (1,956 CMS services/yr).

✓ Accepts Medicare Part B ~$218 Cash
Nephrology ★ 4.6

Dr. John Wu, MD

Springdale, AR 72762

★★★★★ 4.9 (22)
29th 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 (1,388 CMS services/yr).

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

Dr. Himesh Sheth, MD

Fairhaven, MA 02719

★★★★★ 4.9 (18)
99th 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 (2,114 CMS services/yr).

✓ Accepts Medicare Part B ~$224 Cash
Nephrology ★ 4.6

Dr. Koshy Abraham, MD

Fort Worth, TX 76110

★★★★★ 4.9 (18)
55th 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 (2,004 CMS services/yr).

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

Dr. Frederick Albrecht, MD

Bremerton, WA 98310

★★★★★ 4.9 (22)
93rd 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 (6,344 CMS services/yr).

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

Dr. Steven Levy, MD

Fresno, CA 93720

★★★★★ 4.9 (22)
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 (13,740 CMS services/yr).

✓ Accepts Medicare Part B ~$239 Cash
Nephrology ★ 4.8

Dr. Jason Lee, MD

Texarkana, TX 75503

★★★★★ 4.9 (22)
84th 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 (3,616 CMS services/yr).

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

Dr. Waleed Asfar, MD

Nashville, TN 37207

★★★★★ 4.9 (18)
41st TN 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 (1,764 CMS services/yr).

✓ Accepts Medicare Part B ~$202 Cash
Nephrology ★ 4.8
★★★★★ 4.9 (22)
89th DE 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 (6,151 CMS services/yr).

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

Dr. Mohammad Hashmi, MD

Voorhees, NJ 08043

★★★★★ 4.9 (18)
84th 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 (1,621 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.