Michael Williams, D.O.
NPI 1477939304 · Internal Medicine Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Williams, D.O. is a Internal Medicine Physician provider in Brooklyn, NY (NPI 1477939304).
Provider details
- NPI number
- 1477939304
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- UO4193 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
52 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 32 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 20 | $140 |
Typical Medicare-allowed amounts for these services range $9–$140 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 85 | 17 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 37 | — |
| Losartan Potassium | 34 | — |
| Dolutegravir/Rilpivirinebrand: Juluca | 31 | — |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 30 | — |
| Emtricitab/Rilpiviri/Tenof Alabrand: Odefsey | 28 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$956 across 38 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
Additional practice locations (1)
- 215 West 125th Street2nd FloorNew York, NY 10027-4426Phone: (212) 491-2400Fax: (212) 491-2401
Registry dates
- Enumerated
- 2015-08-03
- Last updated
- 2024-05-06
- Certified
- 2024-05-06
Frequently asked questions
- What is Michael Williams's NPI number?
- Michael Williams's National Provider Identifier (NPI) is 1477939304, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Williams's specialty?
- Michael Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Williams located?
- Michael Williams's practice location on file with NPPES is 475 Atlantic Ave Ste 2, Brooklyn, NY 11217-4383.
- What is Michael Williams's phone number?
- The practice phone number listed in the NPPES registry for Michael Williams is (718) 369-4850.
- Does Michael Williams accept Medicare?
- Michael Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Williams's NPI active?
- Yes — Michael Williams's NPI (1477939304) is active in the NPPES registry as of the last update on 2024-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.