Gregory Williams, MD
NPI 1043288848 · Infectious Disease Physician · Worcester, MA
Gregory Williams, MD is a Infectious Disease Physician provider in Worcester, MA (NPI 1043288848).
Provider details
- NPI number
- 1043288848
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 79617 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2009-03-04
Frequently asked questions
- What is Gregory Williams's NPI number?
- Gregory Williams's National Provider Identifier (NPI) is 1043288848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Williams's specialty?
- Gregory Williams is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Williams located?
- Gregory Williams's practice location on file with NPPES is 123 Summer Street, Worcester, MA 01608.
- What is Gregory Williams's phone number?
- The practice phone number listed in the NPPES registry for Gregory Williams is (508) 368-3122.
- Is Gregory Williams's NPI active?
- Yes — Gregory Williams's NPI (1043288848) is active in the NPPES registry as of the last update on 2009-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.