Gregory Biernacki, MD
NPI 1194789909 · Family Medicine Physician · Williamsburg, VA
Enrolled with Medicare as Practitioner - Preventive Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Biernacki, MD is a Family Medicine Physician provider in Williamsburg, VA (NPI 1194789909).
Provider details
- NPI number
- 1194789909
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101041954 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Varicella-Zoster Ge/As01b/Pfbrand: Shingrix | 15 | 12 |
| Rsvpref3 Antigen/As01e/Pfbrand: Arexvy | 13 | 13 |
| Rsv Vacc, Pref a and Pref B/Pfbrand: Abrysvo | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-17
- Last updated
- 2011-02-02
Frequently asked questions
- What is Gregory Biernacki's NPI number?
- Gregory Biernacki's National Provider Identifier (NPI) is 1194789909, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Biernacki's specialty?
- Gregory Biernacki is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Biernacki located?
- Gregory Biernacki's practice location on file with NPPES is 4374 New Town Ave, Williamsburg, VA 23188-2865.
- What is Gregory Biernacki's phone number?
- The practice phone number listed in the NPPES registry for Gregory Biernacki is (757) 220-2795.
- Does Gregory Biernacki accept Medicare?
- Gregory Biernacki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Biernacki's NPI active?
- Yes — Gregory Biernacki's NPI (1194789909) is active in the NPPES registry as of the last update on 2011-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.