John R. Markham, O D
Optometrist · Prescott, AZ
John R. Markham, O D is an optometrist with a practice address in Prescott, Arizona, and NPI 1225094550, issued on Apr 25, 2006. Check the license (Arizona 142, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John R. Markham
- Credential
- O D
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 142 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1680 Willow Creek RD, Prescott, AZ 86301
- Phone
- (928) 778-3950
- Enumerated
- Apr 25, 2006
- Record last updated
- Apr 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (928) 778-3999
- Medicaid ID
- 033176 AZ
- Medicare enrollment
- Enrolled (PECOS I20051102000049); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1973
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,336 in Arizona → Look up another NPI →
Also registered at 1680 Willow Creek RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Markham, D.O.Ophthalmology Physician1972688836
- Carrie Miranda, O. D.Optometrist1306896303
Verify John R. Markham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average optometrist in 2024
143 Medicare Part D claims for 58 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Latanoprost94 claims
- Neomycin-Polymyxin-Dexameth11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.84
1 payment: food and beverage; the largest payer was Lkc Technologies, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southwestern Eye Center LtdPrescott, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John R. Markham among 1,336 optometrist records in Arizona
John R. Markham, 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. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 62% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1973 · median 2010 among the 746 with a school on file
- Record last updated2016 · 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).
26 optometrist records list a practice address in Prescott
They are 26 of the 1,818 NPPES records with a practice address in Prescott, and 1,336 optometrist records in Arizona.
All 1,336 in Arizona → Every provider in Prescott → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Rodney Bauer, ODPrescott, AZ 863011811182264
- Amy Champ, ODPrescott, AZ 863011649238346
- Todd Geiler, O.D.Prescott, AZ 863011851418719
- Thomas Geiler, O.D.Prescott, AZ 863011841418290
- John Good, ODPrescott, AZ 863011831283498
- Priscilla Lee, O.D.Prescott, AZ 863011235126129
- Steven Meyers, ODPrescott, AZ 863011467410225
- Carrie Miranda, O. D.Prescott, AZ 863011306896303
Common questions
What is John R. Markham, O D's NPI number?
John R. Markham, O D's National Provider Identifier (NPI) is 1225094550, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Markham, O D located?
The NPPES record lists a practice address at 1680 Willow Creek RD, Prescott, AZ, 86301. Phone: (928) 778-3950. Providers update this record themselves, so call before visiting.
How can I verify John R. Markham, O D's license?
NPPES lists Arizona license number 142, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does John R. Markham, O D prescribe under Medicare Part D?
In 2024, John R. Markham, O D had 143 Medicare Part D claims for 58 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is John R. Markham, O D's MIPS final score?
The 2023 MIPS final score is 87.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.