NPPES file of Aug 9, 2026

Mitchell Mark Nass, O.D.

Optometrist · Fort Defiance, AZ

Mitchell Mark Nass, O.D. is an optometrist with a practice address in Fort Defiance, Arizona, and NPI 1609936558, issued on Dec 11, 2006. Check the license with the Arizona board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609936558
Name
Mitchell Mark Nass
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
35433 CA
OPC1771 FL
Self-reported in NPPES; status is on the state search
Practice location
Corner OF Route N12 And N7, Fort Defiance, AZ 86504
Phone
(928) 729-8000
Enumerated
Dec 11, 2006
Record last updated
Feb 18, 2026
Medicare enrollment
Enrolled (PECOS I20260116001803); accepts Medicare assignment
Medical or professional school
Pennsylvania College Of Optometry, 1982
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest optometrist records → All 1,336 in Arizona → Look up another NPI →

Also registered at Corner OF Route N12 And N7

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Moaz Abulfaraj, MDSurgery Physician1861797193
  2. Walter Adam, MDFamily Medicine Physician1053368860
  3. Margaret Adams, ARNPFamily Nurse Practitioner1427455682
  4. Sandra Adkins, DDSDentist1710918131
  5. Elizabeth Agre, PT, DPTPhysical Therapist1891268280
  6. Mohammad Akhavan Heidari, MDSurgery Physician1205041571

Verify Mitchell Mark Nass in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

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Mitchell Mark Nass among 1,336 optometrist records in Arizona

Mitchell Mark Nass, O.D. is one of 1,336 optometrist records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 62% newer
  • In a Medicare fileNo · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1982 · median 2010 among the 746 with a school on file
  • Record last updated2026 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

14 optometrist records list a practice address in Fort Defiance

They are 14 of the 590 NPPES records with a practice address in Fort Defiance, and 1,336 optometrist records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,336 in Arizona → Every provider in Fort Defiance → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. Luisa Alvarez, O.D.Fort Defiance, AZ 865041255461174
  2. David Biberdorf, ODFort Defiance, AZ 865041518045921
  3. Jeffrey Duncan, O.D.Fort Defiance, AZ 865041669432365
  4. Mark Latta, O.D.Fort Defiance, AZ 865041609865872
  5. Melissa Lester, O.D.Fort Defiance, AZ 865041164864534
  6. Derek Melton, O.D.Fort Defiance, AZ 865041922058429
  7. Michelle Marie Mijares, O.D.Fort Defiance, AZ 865041861807380
  8. Beth Morgan, O.D.Fort Defiance, AZ 865041447460225

Common questions

What is Mitchell Mark Nass, O.D.'s NPI number?

Mitchell Mark Nass, O.D.'s National Provider Identifier (NPI) is 1609936558, issued on Dec 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mitchell Mark Nass, O.D. located?

The NPPES record lists a practice address at Corner OF Route N12 And N7, Fort Defiance, AZ, 86504. Phone: (928) 729-8000. Providers update this record themselves, so call before visiting.

How can I verify Mitchell Mark Nass, O.D.'s license?

Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.