OrganizationActive
Firefly Health
NPI 1801309521 · Internal Medicine Physician · Boston, MA
Firefly Health is a Internal Medicine Physician organization in Boston, MA (NPI 1801309521).
Provider details
- NPI number
- 1801309521
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jeffrey Greenberg, Co-Founder(857) 880-2023
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(69/100 index)
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
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
361 Newbury St Fl 5
Boston, MA 02115-2738
Phone: (857) 880-2030
Street-level locationGet directions
Mailing address
361 Newbury St Fl 5
Boston, MA 02115-2738
Registry dates
- Enumerated
- 2017-11-16
- Last updated
- 2017-11-16
Frequently asked questions
- What is Firefly Health's NPI number?
- Firefly Health's National Provider Identifier (NPI) is 1801309521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Firefly Health?
- Firefly Health is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Firefly Health located?
- Firefly Health's practice location on file with NPPES is 361 Newbury St Fl 5, Boston, MA 02115-2738.
- What is Firefly Health's phone number?
- The practice phone number listed in the NPPES registry for Firefly Health is (857) 880-2030.
- Who is the authorized official for Firefly Health?
- The authorized official listed on Firefly Health's NPPES record is Jeffrey Greenberg, Co-Founder. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Firefly Health's NPI active?
- Yes — Firefly Health's NPI (1801309521) is active in the NPPES registry as of the last update on 2017-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.