John S Gregg MD
NPI 1588686398 · Cardiovascular Disease Physician · Indiana, PA
John S Gregg MD is a Cardiovascular Disease Physician organization in Indiana, PA (NPI 1588686398).
Provider details
- NPI number
- 1588686398
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Gregg, Owner(724) 463-9700
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
- 2006-07-24
- Last updated
- 2020-08-22
Frequently asked questions
- What is John S Gregg MD's NPI number?
- John S Gregg MD's National Provider Identifier (NPI) is 1588686398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John S Gregg MD?
- John S Gregg MD is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John S Gregg MD located?
- John S Gregg MD's practice location on file with NPPES is 15 S 8th St, Indiana, PA 15701-2776.
- What is John S Gregg MD's phone number?
- The practice phone number listed in the NPPES registry for John S Gregg MD is (724) 463-9700.
- Who is the authorized official for John S Gregg MD?
- The authorized official listed on John S Gregg MD's NPPES record is John Gregg, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John S Gregg MD's NPI active?
- Yes — John S Gregg MD's NPI (1588686398) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.