OSCAR ADLER, M.D., PhD — NPI 1700874138 (Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist) in LEESBURG, VA)

CMS-1500 Box 24J / 33a • NPI

1700874138

Type 1 Individual Rendering/Ordering

HIPAA NUCC Taxonomy • CMS Code

207RN0300X (CMS 11)

Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist)

Box 32 Service Location & ZIP+4

19490 SANDRIDGE WAY, SUITE 120, LEESBURG, VA, 20176-3469

✓ 9-Digit EDI 837 ZIP+4 (20176-3469)

Practice Phone & Referral Fax

(703) 723-5555

Fax: (703) 562-6996

✓ HHS OIG LEIE Sanction Screening — VERIFIED CLEAR: NPI 1700874138 (OSCAR ADLER, M.D., PhD) has 0 active federal exclusions across all 84,224 HHS OIG LEIE sanction records (Database Verified: 2026-11-11).

CMS Medicare Order & Referring PECOS Eligibility

This practitioner does not currently appear in the CMS individual Order & Referring PECOS file (may practice in pediatrics, commercial-only networks, or hospital-employed settings).

Official CMS NPPES Credential & Practice Profile

10-Digit NPI Number	`1700874138` (NPI-1 Individual Practitioner)
Provider / Legal Name	OSCAR ADLER, M.D., PhD
Plain-English Specialty	Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist) NUCC Code: `207RN0300X` (Internal Medicine, Nephrology)
Certifying / Licensing Body	American Board of Internal Medicine — Nephrology
Practice Location Address	19490 SANDRIDGE WAY, SUITE 120, LEESBURG, VA, 20176-3469
Practice Telephone / Fax	Tel: (703) 723-5555 \| Fax: (703) 562-6996
Administrative Mailing Address	19490 SANDRIDGE WAY STE 120, LANSDOWNE, VA, 20176-3469
Enumeration & Last Sync	Enumerated: 2005-10-10 \| CMS Record Updated: 2026-06-02

Clinic Location, Accessibility & Directions

📍 Practice Location & Patient Access

19490 SANDRIDGE WAY, SUITE 120, LEESBURG, VA, 20176-3469

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Plain-English Taxonomy & CMS Crosswalk (207RN0300X)

What Does Taxonomy Code 207RN0300X Mean?

In the HIPAA National Uniform Claim Committee (NUCC) classification, code 207RN0300X translates to:
"Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist)"

CMS-1500 Medicare Specialty Crosswalk: CMS Code 11 (Physician/Internal Medicine) • CMS Code 39 (Physician/Nephrology)
Certifying / Accrediting Authority: American Board of Internal Medicine — Nephrology
Clinical Scope: Declining kidney function (high creatinine / low eGFR), protein or blood in urine, recurrent kidney stones, electrolyte imbalances, or severe hypertension.

Specialty Clinical Procedures & Therapeutic Classes

Standard Scope of Care (OSCAR ADLER, M.D., PhD)

Typical CPT / Diagnostic Procedures:

Chronic Kidney Disease (eGFR & Albuminuria) Staging & Renoprotective Planning
24-Hour Urine Metabolic Evaluation for Recurrent Kidney Stones
Outpatient Hemodialysis & Peritoneal Dialysis Oversight (CPT 90960)
Renal Biopsy Evaluation & Secondary Hypertension Workup

Common Therapeutic Classes:

SGLT2 Inhibitors (Dapagliflozin, Empagliflozin) & Finerenone for CKD
ACE Inhibitors / ARBs for Proteinuria Reduction
Potassium Citrate & Thiazide Diuretics (Kidney Stone Prevention)
Erythropoiesis-Stimulating Agents & Phosphate Binders

All Registered NUCC Taxonomies & State Licenses

Taxonomy Code & Plain-English Description	State License & Primary Status
`207RN0300X` — Internal Medicine, Nephrology Plain English: Board-Certified Nephrologist (Kidney Function, Stones & Dialysis Specialist)	State: VA \| License: `0101234619` \| Primary: Yes (Primary)

Medical Billing, RCM & Hospital Credentialing Teams:

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OSCAR ADLER, M.D., PhD (NPI #1700874138)