Greenfield Ob-Gyn Associates, PC
NPI 1306915285 · Gynecology Physician · Greenfield, MA
Greenfield Ob-Gyn Associates, PC is a Gynecology Physician organization in Greenfield, MA (NPI 1306915285).
Provider details
- NPI number
- 1306915285
- Entity type
- Organization
- Primary specialty
- Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Callahan, Owner(413) 773-5481
- License
- 28664 (MA)
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
19 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
- 2006-11-07
- Last updated
- 2008-10-21
Frequently asked questions
- What is Greenfield Ob-Gyn Associates, PC's NPI number?
- Greenfield Ob-Gyn Associates, PC's National Provider Identifier (NPI) is 1306915285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Greenfield Ob-Gyn Associates, PC?
- Greenfield Ob-Gyn Associates, PC is classified in the NPPES registry as Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Greenfield Ob-Gyn Associates, PC located?
- Greenfield Ob-Gyn Associates, PC's practice location on file with NPPES is 5 Park St, Greenfield, MA 01301-2909.
- What is Greenfield Ob-Gyn Associates, PC's phone number?
- The practice phone number listed in the NPPES registry for Greenfield Ob-Gyn Associates, PC is (413) 773-5481.
- Who is the authorized official for Greenfield Ob-Gyn Associates, PC?
- The authorized official listed on Greenfield Ob-Gyn Associates, PC's NPPES record is William Callahan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Greenfield Ob-Gyn Associates, PC's NPI active?
- Yes — Greenfield Ob-Gyn Associates, PC's NPI (1306915285) is active in the NPPES registry as of the last update on 2008-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.