John R. Markham, OD
- Medicare patients, 2024
- 106
- Part D claims, 2024
- 143
- MIPS score, 2024
- 89
- Industry payments
- $121
- Affiliated sites
- 4
- Practice address
- 3192 Willow Creek Road, Prescott, AZ 86301
- Practice phone
- Call (602) 598-7068
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arizona Institute of Eye Surgery
Surgery Center - Medicare-Certified · Prescott, Arizona
Find John Markham's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John R. Markham is an optometrist in Prescott, Arizona
John Markham practices at Arizona Institute of Eye Surgery in Prescott, Arizona.
John Markham's NPI, 1225094550, was assigned on April 25, 2006. John Markham graduated from Pacific University - College of Optometry in 1973. John Markham holds Arizona license 142.
- NPI
- 1225094550NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971595919
- NPI enumeration date
- April 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (602) 598-7068
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John R. Markham practices at Arizona Institute of Eye Surgery in Prescott, Arizona
John Markham's primary practice is Arizona Institute of Eye Surgery, at 3192 Willow Creek Road, Prescott, AZ 86301. The practice phone is (602) 598-7068.
- Arizona Institute of Eye Surgery3192 Willow Creek Road, Prescott, AZ 86301Phone(602) 598-7068
Source: Dmand AI Affiliation Data
John R. Markham is affiliated with 4 sites of care and 3 medical groups
John Markham's primary practice is Arizona Institute of Eye Surgery in Prescott, Arizona. Dmand AI also links John Markham to 3 group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John R. Markham's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Markham practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arizona Institute of Eye Surgery | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John R. Markham is one of 958 optometrists in Arizona
Optometrist is John Markham's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Markham is licensed in Arizona.
Specialties and state licenses
- Optometrist, ArizonaPrimary
Optometrists near John Markham
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John R. Markham treated 106 Medicare patients in 2024, average age 74
CMS counts 106 Medicare patients who saw John Markham in 2024. The largest group is 65 to 74, with 50 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Markham's median patient age at 73, with 49% women.
John Markham's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Markham's Medicare patients by sex, 2024
- Women7268%
- Men3432%
Chronic conditions among John Markham's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis53%
- Diabetes27%
- Ischemic heart disease24%
- Osteoporosis24%
- Chronic kidney disease20%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
John Markham's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John R. Markham wrote 143 Medicare Part D claims in 2024
In 2024, John Markham wrote 143 Medicare Part D claims for 58 patients. 50% of them were for generic drugs.
John Markham's Part D claims by kind of drug, 2024
- Generic72 claims50%
- Brand-name71 claims50%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John R. Markham scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for John Markham for performance year 2024, reported as part of a group. John Markham accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
John Markham's MIPS scores, performance year 2024
- 89of 100Final score
- 84.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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John R. Markham received $121 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Markham from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Dompe US, Inc. paid the most, $121.
Companies that paid John Markham the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John R. Markham graduated from Pacific University - College of Optometry
John Markham graduated from Pacific University - College of Optometry in 1973.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John R. Markham's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John R. Markham
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John R. Markham's NPI number?
John R. Markham's NPI number is 1225094550. It was assigned on April 25, 2006, and it is active in the NPI Registry.
What does John R. Markham specialize in?
John R. Markham is an optometrist in Prescott, Arizona. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John R. Markham practice?
John Markham practices at 3192 Willow Creek Road, Prescott, AZ 86301. John Markham's primary practice is Arizona Institute of Eye Surgery in Prescott, Arizona. Dmand AI also links John Markham to 3 group practices and clinics and 3 medical groups.
What is John R. Markham's office phone number?
The practice phone on file for John Markham is (602) 598-7068.
What is John R. Markham's medical license number?
John Markham holds Arizona license 142.
Does John R. Markham accept Medicare?
Yes. CMS lists John Markham as accepting Medicare assignment.
What is John R. Markham's MIPS score?
John Markham's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does John R. Markham see?
CMS counts 106 Medicare patients who saw John Markham in 2024, with an average age of 74.
Where did John R. Markham go to medical school?
John Markham graduated from Pacific University - College of Optometry in 1973.
Has John R. Markham received payments from drug or device companies?
CMS Open Payments shows $121 in general payments to John Markham from 1 company from 2025 to 2025. The largest total came from Dompe US, Inc.
How long has John R. Markham been practicing?
John Markham graduated from medical school in 1973, 53 years ago.
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