John Grigas, MD
NPI 1457339772 · Pulmonary Disease Physician · Jacksonville, FL
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grigas, MD is a Pulmonary Disease Physician provider in Jacksonville, FL (NPI 1457339772).
Provider details
- NPI number
- 1457339772
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME0034374 (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
20 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
- 2006-01-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Grigas's NPI number?
- John Grigas's National Provider Identifier (NPI) is 1457339772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grigas's specialty?
- John Grigas is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Grigas located?
- John Grigas's practice location on file with NPPES is 800 Prudential Dr, Jacksonville, FL 32207-8202.
- What is John Grigas's phone number?
- The practice phone number listed in the NPPES registry for John Grigas is (904) 202-2963.
- Does John Grigas accept Medicare?
- John Grigas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grigas's NPI active?
- Yes — John Grigas's NPI (1457339772) 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.