Dr. John R. Markham PC
NPI 1659513760 · Ophthalmology Physician · Wickenburg, AZ
Dr. John R. Markham PC is a Ophthalmology Physician organization in Wickenburg, AZ (NPI 1659513760).
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
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
Mailing address
Other names (DBA / former)
- Doing business as
- Prescott Vision & Eye Surgery Center
Registry dates
- Enumerated
- 2009-04-03
- Last updated
- 2009-04-03
Frequently asked questions
- What is Dr. John R. Markham PC's NPI number?
- Dr. John R. Markham PC's National Provider Identifier (NPI) is 1659513760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dr. John R. Markham PC?
- Dr. John R. Markham PC is classified in the NPPES registry as Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Dr. John R. Markham PC located?
- Dr. John R. Markham PC's practice location on file with NPPES is 25 W Yavapai St, Wickenburg, AZ 85390-3280.
- What is Dr. John R. Markham PC's phone number?
- The practice phone number listed in the NPPES registry for Dr. John R. Markham PC is (928) 684-2880.
- Who is the authorized official for Dr. John R. Markham PC?
- The authorized official listed on Dr. John R. Markham PC's NPPES record is Greg Davis, Administrator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dr. John R. Markham PC's NPI active?
- Yes — Dr. John R. Markham PC's NPI (1659513760) is active in the NPPES registry as of the last update on 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.