OrganizationActive
Dr. John R. Markham PC
NPI 1659513760 · Ophthalmology Physician · Wickenburg, AZ
Provider details
- NPI number
- 1659513760
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Greg Davis, Administrator(928) 778-3950
- License
- 4498 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(85/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
25 W Yavapai St
Wickenburg, AZ 85390-3280
Phone: (928) 684-2880
Fax: (928) 684-3209
Street-level locationGet directions
Mailing address
1680 Willow Creek Rd
Prescott, AZ 86301-1108
Other names (DBA / former)
- Doing business as
- Prescott Vision & Eye Surgery Center
Registry dates
- Enumerated
- 2009-04-03
- Last updated
- 2009-04-03
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.