Charles Oshinsky, MD
NPI 1639608912 · Rheumatology Physician · Chevy Chase, MD
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Oshinsky, MD is a Rheumatology Physician provider in Chevy Chase, MD (NPI 1639608912).
Provider details
- NPI number
- 1639608912
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0093457 (MD)
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
9 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
6,246 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) |
|---|---|---|
| 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 | 943 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 709 | $134 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 519 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 506 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 478 | $8 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 284 | 67 |
| Methotrexate Sodiumbrand: Methotrexate | 131 | 42 |
| Hydroxychloroquine Sulfate | 93 | 32 |
| Alendronate Sodium | 85 | 33 |
| Allopurinol | 64 | 20 |
| Duloxetine Hcl | 56 | 24 |
| Colchicine | 49 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,305 across 19 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
- 2017-06-08
- Last updated
- 2026-02-17
- Certified
- 2026-02-17
Frequently asked questions
- What is Charles Oshinsky's NPI number?
- Charles Oshinsky's National Provider Identifier (NPI) is 1639608912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Oshinsky's specialty?
- Charles Oshinsky is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Oshinsky located?
- Charles Oshinsky's practice location on file with NPPES is 5454 Wisconsin Ave Ste 600, Chevy Chase, MD 20815-6927.
- What is Charles Oshinsky's phone number?
- The practice phone number listed in the NPPES registry for Charles Oshinsky is (301) 942-7600.
- Does Charles Oshinsky accept Medicare?
- Charles Oshinsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Oshinsky's NPI active?
- Yes — Charles Oshinsky's NPI (1639608912) is active in the NPPES registry as of the last update on 2026-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.