Gregory Crosby, MD
NPI 1629090204 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Crosby, MD is a Anesthesiology Physician provider in Boston, MA (NPI 1629090204).
Provider details
- NPI number
- 1629090204
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 48102 (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
- 2006-07-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Crosby's NPI number?
- Gregory Crosby's National Provider Identifier (NPI) is 1629090204, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Crosby's specialty?
- Gregory Crosby is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Crosby located?
- Gregory Crosby's practice location on file with NPPES is 75 Frances Street, Boston, MA 02115.
- What is Gregory Crosby's phone number?
- The practice phone number listed in the NPPES registry for Gregory Crosby is (617) 732-8210.
- Does Gregory Crosby accept Medicare?
- Gregory Crosby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Crosby's NPI active?
- Yes — Gregory Crosby's NPI (1629090204) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.