Mitchell Nass, O.D.
NPI 1609936558 · Optometrist · Fort Defiance, AZ
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mitchell Nass, O.D. is a Optometrist provider in Fort Defiance, AZ (NPI 1609936558).
Provider details
- NPI number
- 1609936558
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 35433 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
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
- 2006-12-11
- Last updated
- 2026-02-18
- Certified
- 2026-02-18
Frequently asked questions
- What is Mitchell Nass's NPI number?
- Mitchell Nass's National Provider Identifier (NPI) is 1609936558, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mitchell Nass's specialty?
- Mitchell Nass is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Mitchell Nass located?
- Mitchell Nass's practice location on file with NPPES is Corner of Route N12 and N7, Fort Defiance, AZ 86504-0649.
- What is Mitchell Nass's phone number?
- The practice phone number listed in the NPPES registry for Mitchell Nass is (928) 729-8000.
- Does Mitchell Nass accept Medicare?
- Mitchell Nass is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mitchell Nass's NPI active?
- Yes — Mitchell Nass's NPI (1609936558) is active in the NPPES registry as of the last update on 2026-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.