What is Gregory Williams's NPI number?

Gregory Williams's National Provider Identifier (NPI) is 1811548324, 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 Peer Specialist (Other Service Providers).

Where is Gregory Williams located?

Gregory Williams's practice location on file with NPPES is 835 W Main St, Rochester, NY 14611-2335.

What is Gregory Williams's phone number?

The practice phone number listed in the NPPES registry for Gregory Williams is (585) 467-2230.

Is Gregory Williams's NPI active?

Yes — Gregory Williams's NPI (1811548324) is active in the NPPES registry as of the last update on 2026-05-24.

IndividualActive

Gregory Williams

NPI 1811548324 · Peer Specialist · Rochester, NY

Gregory Williams is a Peer Specialist provider in Rochester, NY (NPI 1811548324).

Provider details

NPI number: 1811548324
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Sex: Male
Sole proprietor: No
License: 2423 (NY)

Specialties & taxonomies

Peer SpecialistPrimary175T00000XLicense 2423 (NY)
Other Service Providers

Profile Score

Established profile(65/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
6 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

835 W Main St

Rochester, NY 14611-2335

Phone: (585) 467-2230

Street-level locationGet directions

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Mailing address