Claire Gramza, CRNA
NPI 1902325970 · Certified Registered Nurse Anesthetist · Boston, MA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Gramza, CRNA is a Certified Registered Nurse Anesthetist provider in Boston, MA (NPI 1902325970).
Provider details
- NPI number
- 1902325970
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Female
- Sole proprietor
- No
- License
- RN2287151 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 243 Charles StBoston, MA 02114-3002Phone: (617) 523-7900
Registry dates
- Enumerated
- 2017-09-11
- Last updated
- 2018-08-21
Frequently asked questions
- What is Claire Gramza's NPI number?
- Claire Gramza's National Provider Identifier (NPI) is 1902325970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Gramza's specialty?
- Claire Gramza is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claire Gramza located?
- Claire Gramza's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115.
- What is Claire Gramza's phone number?
- The practice phone number listed in the NPPES registry for Claire Gramza is (617) 355-7737.
- Does Claire Gramza accept Medicare?
- Claire Gramza is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Gramza's NPI active?
- Yes — Claire Gramza's NPI (1902325970) is active in the NPPES registry as of the last update on 2018-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.