Firefly Medical Group PC
NPI 1861279705 · Internal Medicine Physician · Watertown, MA
Firefly Medical Group PC is a Internal Medicine Physician organization in Watertown, MA (NPI 1861279705).
Provider details
- NPI number
- 1861279705
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jeffrey Greenberg, Clinician(781) 291-3042
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
2 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
- 2023-09-13
- Last updated
- 2024-11-26
- Certified
- 2024-11-26
Frequently asked questions
- What is Firefly Medical Group PC's NPI number?
- Firefly Medical Group PC's National Provider Identifier (NPI) is 1861279705, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Firefly Medical Group PC?
- Firefly Medical Group PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Firefly Medical Group PC located?
- Firefly Medical Group PC's practice location on file with NPPES is 260 Arsenal Pl, Watertown, MA 02472-3171.
- What is Firefly Medical Group PC's phone number?
- The practice phone number listed in the NPPES registry for Firefly Medical Group PC is (888) 897-1887.
- Who is the authorized official for Firefly Medical Group PC?
- The authorized official listed on Firefly Medical Group PC's NPPES record is Jeffrey Greenberg, Clinician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Firefly Medical Group PC's NPI active?
- Yes — Firefly Medical Group PC's NPI (1861279705) is active in the NPPES registry as of the last update on 2024-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.