Jack Greiner, O.D
NPI 1811051535 · Optometrist · Vinita, OK
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Greiner, O.D is a Optometrist provider in Vinita, OK (NPI 1811051535).
Provider details
- NPI number
- 1811051535
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1156 (OK)
Specialties & taxonomies
Eye and Vision Services Providers
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
- 2006-12-20
- Last updated
- 2014-11-06
Frequently asked questions
- What is Jack Greiner's NPI number?
- Jack Greiner's National Provider Identifier (NPI) is 1811051535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Greiner's specialty?
- Jack Greiner is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Jack Greiner located?
- Jack Greiner's practice location on file with NPPES is 120 W Delaware Ave, Vinita, OK 74301-4224.
- What is Jack Greiner's phone number?
- The practice phone number listed in the NPPES registry for Jack Greiner is (918) 256-5646.
- Does Jack Greiner accept Medicare?
- Jack Greiner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Greiner's NPI active?
- Yes — Jack Greiner's NPI (1811051535) is active in the NPPES registry as of the last update on 2014-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.