Gary Gruen
NPI 1952374860 · Specialist · Pittsburgh, PA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Gruen is a Specialist provider in Pittsburgh, PA (NPI 1952374860).
Provider details
- NPI number
- 1952374860
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- MD032636E (PA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$147 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-10
- Last updated
- 2021-04-06
Frequently asked questions
- What is Gary Gruen's NPI number?
- Gary Gruen's National Provider Identifier (NPI) is 1952374860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Gruen's specialty?
- Gary Gruen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Gary Gruen located?
- Gary Gruen's practice location on file with NPPES is 3471 5th Ave, Pittsburgh, PA 15213-3215.
- What is Gary Gruen's phone number?
- The practice phone number listed in the NPPES registry for Gary Gruen is (412) 687-3900.
- Does Gary Gruen accept Medicare?
- Gary Gruen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Gruen's NPI active?
- Yes — Gary Gruen's NPI (1952374860) is active in the NPPES registry as of the last update on 2021-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.