Stephen Wallace Hartz, M.D.
General Practice Physician · Flagstaff, AZ
Stephen Wallace Hartz, M.D. is a general practice physician with a practice address in Flagstaff, Arizona, and NPI 1669492757, issued on Jul 20, 2006. Check the license (Arizona 12105, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Wallace Hartz
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 12105 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Beaver St, Flagstaff, AZ 86001
- Phone
- (928) 779-3366
- Enumerated
- Jul 20, 2006
- Record last updated
- Jul 16, 2024
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 228 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 Stephen Wallace Hartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 12105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average general practice physician in 2024
17 Medicare Part D claims, against an average of 3,030 among the 8,395 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.
Stephen Wallace Hartz among 228 general practice physician records in Arizona
Stephen Wallace Hartz, M.D. is one of 228 general practice physician records with a practice address in Arizona. 48% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 69% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 24% of these records are
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Arizona
There are 228 general practice physician records in Arizona.
All 228 in Arizona → Every provider in Flagstaff → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Christine Crowder, MDFlagstaff, AZ 860011003811068
- Nicholaus Martin, MDFlagstaff, AZ 860011629053236
- Travis Stiegler, D.O.Flagstaff, AZ 860011235371493
- William Meshier, MDSnowflake, AZ 859371407837172
- Alexander Figueroa Madera, M.D.Pinetop, AZ 859351760890123
- Thomas Paxman, DOPinetop, AZ 859351821061805
- Samuel Rosero Garcia, M.D.Lakeside, AZ 859291912395807
- Roger Williams, MDShow Low, AZ 859011487631842
Common questions
What is Stephen Wallace Hartz, M.D.'s NPI number?
Stephen Wallace Hartz, M.D.'s National Provider Identifier (NPI) is 1669492757, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Wallace Hartz, M.D. located?
The NPPES record lists a practice address at 1200 N Beaver St, Flagstaff, AZ, 86001. Phone: (928) 779-3366. Providers update this record themselves, so call before visiting.
How can I verify Stephen Wallace Hartz, M.D.'s license?
NPPES lists Arizona license number 12105, 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 Stephen Wallace Hartz, M.D. prescribe under Medicare Part D?
In 2024, Stephen Wallace Hartz, M.D. had 17 Medicare Part D claims; the average among general practice physician prescribers was 3,030. 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.