DR. JOHN R MARKHAM O D
NPI 1225094550
Optometrist in Prescott, AZ
About Dr. John R Markham O D NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN R MARKHAM O D (NPI 1225094550) is an individual optometrist in Prescott, Arizona, licensed in Arizona (142) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Pacific University - College Of Optometry (1973).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 17
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John R Markham O D is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Markham reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Prescott, AZ 86301
- Reassigned Medicare billing, Arizona enrollment
- 212 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 86301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PRESCOTT, AZ 86301
PRESCOTT, AZ 86301
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Markham's NPI number?
The NPI number for John Markham is 1225094550. It was assigned to this individual provider in the NPPES registry on April 25, 2006.
Where is John Markham located?
John Markham practices at 1680 Willow Creek Rd, Prescott, AZ 86301. The listed phone number is (928) 778-3950.
What is John Markham's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is John Markham enrolled in Medicare?
Yes. John Markham is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Markham's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Markham reassigns Medicare benefits to Southwestern Eye Center Ltd (Prescott, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Markham's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Markham accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Arizona and Blue Cross Blue Shield of Wyoming and 11 other insurers list John Markham as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Markham was last updated on April 20, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John R Markham, O D · NPI 1225094550
Optometrist provider in Prescott, Arizona. Individual provider, active in the CMS NPPES registry since April 25, 2006.
## Identity
- **NPI:** 1225094550 (Entity type: Individual)
- **Enumerated:** April 25, 2006
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 142 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1680 WILLOW CREEK RD, Prescott, AZ 86301-1108
- **Phone:** (928) 778-3950 · **Fax:** (928) 778-3999
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Southwestern Eye Center Ltd (NPI 1326089715, Prescott, AZ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Pacific University - College Of Optometry, class of 1973
## Record status
- **NPPES last updated:** April 20, 2016
- **Other identifiers:** Other 5858351; Other AZ0142; Other Z63118 (AZ); and 14 more
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Source: [NPI Profile](https://npiprofile.com/npi/1225094550) · Data from the CMS NPPES public registry.