John Massini, M.D.
NPI 1588899231 · Rheumatology Physician · Gainesville, FL
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Massini, M.D. is a Rheumatology Physician provider in Gainesville, FL (NPI 1588899231).
Provider details
- NPI number
- 1588899231
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- TRN13802 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-05-26
- Last updated
- 2014-08-29
Frequently asked questions
- What is John Massini's NPI number?
- John Massini's National Provider Identifier (NPI) is 1588899231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Massini's specialty?
- John Massini is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Massini located?
- John Massini's practice location on file with NPPES is 1600 Sw Archer Rd, Gainesville, FL 32610-3003.
- What is John Massini's phone number?
- The practice phone number listed in the NPPES registry for John Massini is (352) 265-0239.
- Does John Massini accept Medicare?
- John Massini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Massini's NPI active?
- Yes — John Massini's NPI (1588899231) is active in the NPPES registry as of the last update on 2014-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.