Mark Peterson, D.O.
Emergency Medicine Physician · Flagstaff, AZ
Mark Peterson, D.O. is an emergency medicine physician with a practice address in Flagstaff, Arizona, and NPI 1295881274, issued on Jan 25, 2007. Check the license (Arizona 3006, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Peterson
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 3006 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Beaver St, Flagstaff, AZ 86001
- Phone
- (928) 380-0476
- Enumerated
- Jan 25, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (928) 214-3882
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,494 in Arizona → Look up another NPI →
Also registered at 1200 N Beaver St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 3006Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average emergency medicine physician in 2024
77 Medicare Part D claims for 60 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
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.
Mark Peterson among 1,494 emergency medicine physician records in Arizona
Mark Peterson, D.O. 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 2007, is newer than 38% of them.
- NPI issued2007 · 38% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2007 · 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).
49 emergency medicine physician records list a practice address in Flagstaff
They are 49 of the 2,419 NPPES records with a practice address in Flagstaff, and 1,494 emergency medicine physician records in Arizona.
All 1,494 in Arizona → Every provider in Flagstaff → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Carrie Burns, M.D.Flagstaff, AZ 860011891875746
- Charles Coffman, M.D.Flagstaff, AZ 860011972584779
- Kevin Conn, M.D.Flagstaff, AZ 860011104995638
- Jennifer Conn, M.D.Flagstaff, AZ 860011811067804
- Jeffrey Daniel, M.DFlagstaff, AZ 860011538118385
- Michael Earl, M.D.Flagstaff, AZ 860011720161250
- James Hayes, M.D.Flagstaff, AZ 860011285703215
- Sarah Hsia, M.D.Flagstaff, AZ 860011477609469
Common questions
What is Mark Peterson, D.O.'s NPI number?
Mark Peterson, D.O.'s National Provider Identifier (NPI) is 1295881274, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Peterson, D.O. located?
The NPPES record lists a practice address at 1200 N Beaver St, Flagstaff, AZ, 86001. Phone: (928) 380-0476. Providers update this record themselves, so call before visiting.
How can I verify Mark Peterson, D.O.'s license?
NPPES lists Arizona license number 3006, 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 Mark Peterson, D.O. prescribe under Medicare Part D?
In 2024, Mark Peterson, D.O. had 77 Medicare Part D claims for 60 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.