Oscar Adler, M.D., PHD
NPI 1700874138 · Nephrology Physician · Leesburg, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oscar Adler, M.D., PHD is a Nephrology Physician provider in Leesburg, VA (NPI 1700874138).
Provider details
- NPI number
- 1700874138
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101234619 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,005 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 699 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 575 | $124 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 222 | $16 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 202 | $341 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 142 | $125 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 209 | 71 |
| Calcitriol | 166 | 51 |
| Nifedipinebrand: Nifedipine Er | 115 | 41 |
| Valsartan | 100 | 29 |
| Carvedilol | 98 | 36 |
| Hydralazine Hcl | 90 | 39 |
| Metoprolol Succinate | 73 | 29 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$215 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-10
- Last updated
- 2026-06-02
- Certified
- 2026-06-02
Frequently asked questions
- What is Oscar Adler's NPI number?
- Oscar Adler's National Provider Identifier (NPI) is 1700874138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oscar Adler's specialty?
- Oscar Adler is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Oscar Adler located?
- Oscar Adler's practice location on file with NPPES is 19490 Sandridge Way, Suite 120, Leesburg, VA 20176-3469.
- What is Oscar Adler's phone number?
- The practice phone number listed in the NPPES registry for Oscar Adler is (703) 723-5555.
- Does Oscar Adler accept Medicare?
- Oscar Adler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oscar Adler's NPI active?
- Yes — Oscar Adler's NPI (1700874138) is active in the NPPES registry as of the last update on 2026-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.