Warren J. Downhour, D.O,
Family Medicine Physician · Phoenix, AZ
Warren J. Downhour, D.O, is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1043264716, issued on May 19, 2006. Check the license (Arizona 4628, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Warren J. Downhour
- Credential
- D.O,
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 4628 AZ
34004028 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4700 N 51St Ave, Phoenix, AZ 85031
- Phone
- (623) 209-5555
- Enumerated
- May 19, 2006
- Record last updated
- Apr 29, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (623) 247-1905
- Medicaid ID
- 0728001 OH
- Medicare enrollment
- Enrolled (PECOS I20040927001222); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1971
- Entity
- Type 1 · individual
Also registered at 4700 N 51St Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Warren J. Downhour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 4628Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- State OF Ohio Office OF Budget And Management State AccountingColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
649 family medicine physician records list a practice address in Phoenix
They are 649 of the 31,399 NPPES records with a practice address in Phoenix, and 3,119 family medicine physician records in Arizona.
All 649 in Phoenix → All 3,119 in Arizona → Every provider in Phoenix →
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- Rebecca Abraham, M.D.Surprise, AZ1437273323
Common questions
What is Warren J. Downhour, D.O,'s NPI number?
Warren J. Downhour, D.O,'s National Provider Identifier (NPI) is 1043264716, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren J. Downhour, D.O, located?
The NPPES record lists a practice address at 4700 N 51St Ave, Phoenix, AZ, 85031. Phone: (623) 209-5555. Providers update this record themselves, so call before visiting.
How can I verify Warren J. Downhour, D.O,'s license?
NPPES lists Arizona license number 4628, 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.