Sara Hammer, PA-C
NPI 1639608391 · Physician Assistant · Boston, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sara Hammer, PA-C is a Physician Assistant provider in Boston, MA (NPI 1639608391).
Provider details
- NPI number
- 1639608391
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA6977 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2017-06-07
- Last updated
- 2019-10-22
Frequently asked questions
- What is Sara Hammer's NPI number?
- Sara Hammer's National Provider Identifier (NPI) is 1639608391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sara Hammer's specialty?
- Sara Hammer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sara Hammer located?
- Sara Hammer's practice location on file with NPPES is 55 Fruit Street, Blake 1500, Boston, MA 02114-2696.
- What is Sara Hammer's phone number?
- The practice phone number listed in the NPPES registry for Sara Hammer is (617) 724-3874.
- Does Sara Hammer accept Medicare?
- Sara Hammer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sara Hammer's NPI active?
- Yes — Sara Hammer's NPI (1639608391) is active in the NPPES registry as of the last update on 2019-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.