Ronald Dewey Cox, MD
Ophthalmology Physician · Tempe, AZ
Ronald Dewey Cox, MD is an ophthalmology physician with a practice address in Tempe, Arizona, and NPI 1912103961, issued on Jun 26, 2007. Check the license (Arizona 10791, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ronald Dewey Cox
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 10791 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 2139 E Southern Avenue, Tempe, AZ 85282
- Phone
- (480) 730-8188
- Enumerated
- Jun 26, 2007
- Record last updated
- Jul 17, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 353 in Arizona → Look up another NPI →
Verify Ronald Dewey Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 10791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $25.39
1 payment: food and beverage; the largest payer was Genentech USA, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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.
Ronald Dewey Cox among 353 ophthalmology physician records in Arizona
Ronald Dewey Cox, MD is one of 353 ophthalmology physician records with a practice address in Arizona. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 59% of them.
- NPI issued2007 · 59% of these records are older, 30% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2016 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Arizona
There are 353 ophthalmology physician records in Arizona.
All 353 in Arizona → Every provider in Tempe → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Frank Caserta, M.D.Tempe, AZ 852821053396937
- Gerald Ford, M.D.Tempe, AZ 852821972588804
- Laura Grant, MDTempe, AZ 852821194174847
- Camille Hylton, MDTempe, AZ 852821629019732
- Bertram Matsumoto, MDTempe, AZ 852821477557494
- Thomas Moody, M.D.Tempe, AZ 852821003815705
- Richard Sherry, M.D.Tempe, AZ 852821588656276
- Madeline Hogan, MDTempe, AZ 852811871112813
Common questions
What is Ronald Dewey Cox, MD's NPI number?
Ronald Dewey Cox, MD's National Provider Identifier (NPI) is 1912103961, issued on Jun 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Dewey Cox, MD located?
The NPPES record lists a practice address at 2139 E Southern Avenue, Tempe, AZ, 85282. Phone: (480) 730-8188. Providers update this record themselves, so call before visiting.
How can I verify Ronald Dewey Cox, MD's license?
NPPES lists Arizona license number 10791, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.