Michael J. Stumpf, D.O.
Surgery Physician · Phoenix, AZ
Michael J. Stumpf, D.O. is a surgery physician with a practice address in Phoenix, Arizona, and NPI 1003015918, issued on Jul 12, 2007. Check the license (Arizona 4658, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael J. Stumpf
- Credential
- D.O.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 4658 AZ
OS10828 FL
Self-reported in NPPES; status is on the state search - Practice location
- 20940 N. Tatum Blvd. Ste #350, Phoenix, AZ 85050
- Phone
- (844) 436-7874
- Enumerated
- Jul 12, 2007
- Record last updated
- May 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (877) 828-6834
- Medicaid ID
- 270795 AZ
- Medicare enrollment
- Enrolled (PECOS I20071031000127); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2002
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 760 in Arizona → Look up another NPI →
Verify Michael J. Stumpf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 4658Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average surgery physician in 2024
14 Medicare Part D claims for 12 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
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 one group practice
- Valley View Physician Practices LLCFort Mohave, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Stumpf among 760 surgery physician records in Arizona
Michael J. Stumpf, D.O. is one of 760 surgery physician records with a practice address in Arizona. 72% 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 39% of them.
- NPI issued2007 · 39% of these records are older, 52% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2002 · median 2006 among the 401 with a school on file
- Record last updated2020 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Arizona
There are 760 surgery physician records in Arizona.
All 760 in Arizona → Every provider in Phoenix → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Steven Simon, MDPhoenix, AZ 850501982604708
- Ela Timbadia, M.D.Phoenix, AZ 850531487747747
- Lena Egbert, MDPhoenix, AZ 850541417690850
- Marlene Garcia-Neuer, MDPhoenix, AZ 850541093457095
- Joseph Johnson, MDPhoenix, AZ 850541629042635
- Nicholas Nolan, MDPhoenix, AZ 850541205570629
- David Pearson, MDPhoenix, AZ 850541043574130
- Barbara Pockaj, M.D.Phoenix, AZ 850541982689402
Common questions
What is Michael J. Stumpf, D.O.'s NPI number?
Michael J. Stumpf, D.O.'s National Provider Identifier (NPI) is 1003015918, issued on Jul 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Stumpf, D.O. located?
The NPPES record lists a practice address at 20940 N. Tatum Blvd. Ste #350, Phoenix, AZ, 85050. Phone: (844) 436-7874. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Stumpf, D.O.'s license?
NPPES lists Arizona license number 4658, 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 Michael J. Stumpf, D.O. prescribe under Medicare Part D?
In 2024, Michael J. Stumpf, D.O. had 14 Medicare Part D claims for 12 beneficiaries; the average among surgery physician prescribers was 147. 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.