William R. Fleming, M.D.
Emergency Medicine Physician · Prescott, AZ
William R. Fleming, M.D. is an emergency medicine physician with a practice address in Prescott, Arizona, and NPI 1023052933, issued on Jun 15, 2006. Check the license (Arizona 22386, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- William R. Fleming
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 22386 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 500 N US Highway 89, Prescott, AZ 86313
- Phone
- (928) 445-4860
- Enumerated
- Jun 15, 2006
- Record last updated
- Aug 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (928) 776-6147
- Medicaid ID
- 189052 AZ
- Medicare enrollment
- Enrolled (PECOS I20240617000706); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,494 in Arizona → Look up another NPI →
Also registered at 500 N US Highway 89
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eileen Adams, LMSWClinical Social Worker1447529607
- Karsyn Alexander, MSOT, OTRLOccupational Therapist1699561837
- William AllenArt Therapist1841379393
- Nina Ameli, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1841800695
- Russell Anderson, MSWClinical Social Worker1184677304
- Osmund Arriola, PHARM. D.Pharmacist1245349174
Verify William R. Fleming in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 22386Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average emergency medicine physician in 2024
26 Medicare Part D claims for 14 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Sunset Emergency Physicians LLCParker, AZ
- Winslow Memorial Hospital IncWinslow, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William R. Fleming among 1,494 emergency medicine physician records in Arizona
William R. Fleming, M.D. is one of 1,494 emergency medicine physician records with a practice address in Arizona. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 62% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1989 · median 2014 among the 828 with a school on file
- Record last updated2015 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Arizona
There are 1,494 emergency medicine physician records in Arizona.
All 1,494 in Arizona → Every provider in Prescott → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Frederick Leonard, M.D.Prescott, AZ 863131700067071
- Erwina Ungos, D.OPrescott, AZ 863131104848290
- Craig Sinnard, MDPrescott, AZ 863051053332908
- Daniel Ballard, MDPrescott, AZ 863011396795472
- Tara Bruns, MD MPHPrescott, AZ 863011922368117
- Thomas Campbell, MDPrescott, AZ 863011336766450
- Brett Jones, MD, PHDPrescott, AZ 863011730380908
- Jessica Matthews, MDPrescott, AZ 863011851499107
Common questions
What is William R. Fleming, M.D.'s NPI number?
William R. Fleming, M.D.'s National Provider Identifier (NPI) is 1023052933, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William R. Fleming, M.D. located?
The NPPES record lists a practice address at 500 N US Highway 89, Prescott, AZ, 86313. Phone: (928) 445-4860. Providers update this record themselves, so call before visiting.
How can I verify William R. Fleming, M.D.'s license?
NPPES lists Arizona license number 22386, 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.
How much does William R. Fleming, M.D. prescribe under Medicare Part D?
In 2024, William R. Fleming, M.D. had 26 Medicare Part D claims for 14 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.