John Haffner, M.D.
NPI 1285666834 · Pediatric Critical Care Medicine Physician · St Petersburg, FL
John Haffner, M.D. is a Pediatric Critical Care Medicine Physician provider in St Petersburg, FL (NPI 1285666834).
Provider details
- NPI number
- 1285666834
- Entity type
- Individual
- Primary specialty
- Pediatric Critical Care Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- ME70323 (FL)
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
- 2006-07-06
- Last updated
- 2010-02-03
Frequently asked questions
- What is John Haffner's NPI number?
- John Haffner's National Provider Identifier (NPI) is 1285666834, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Haffner's specialty?
- John Haffner is listed in the NPPES registry with a primary specialty of Pediatric Critical Care Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Haffner located?
- John Haffner's practice location on file with NPPES is 1033 Dr Martin Luther King Jr St N, St Petersburg, FL 33701-1547.
- What is John Haffner's phone number?
- The practice phone number listed in the NPPES registry for John Haffner is (727) 456-4250.
- Is John Haffner's NPI active?
- Yes — John Haffner's NPI (1285666834) is active in the NPPES registry as of the last update on 2010-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.