Steven M. Herf, M.D.
Endocrinology, Diabetes & Metabolism Physician · Peoria, AZ
Steven M. Herf, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Peoria, Arizona, and NPI 1821097841, issued on Jul 20, 2005. Check the license (Arizona 34971, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Steven M. Herf
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 34971 AZ
01028290B IN
Self-reported in NPPES; status is on the state search - Practice location
- 12520 W Bajada RD, Peoria, AZ 85383
- Phone
- (623) 476-2873
- Enumerated
- Jul 20, 2005
- Record last updated
- Mar 2, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- PENDING IN
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 175 in Arizona → Look up another NPI →
Verify Steven M. Herf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 34971Check 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 endocrinology, diabetes & metabolism physician in 2024
19 Medicare Part D claims, against an average of 2,630 among the 8,223 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.
Steven M. Herf among 175 endocrinology, diabetes & metabolism physician records in Arizona
Steven M. Herf, M.D. is one of 175 endocrinology, diabetes & metabolism physician records with a practice address in Arizona. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2016 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Arizona
There are 175 endocrinology, diabetes & metabolism physician records in Arizona.
All 175 in Arizona → Every provider in Peoria → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Rashi Agarwal, M.D.Peoria, AZ 853811336394956
- Vijayaratna Chockalingam, M.DPeoria, AZ 853811225299332
- Abdullah Hanna-Moussa, MDPeoria, AZ 853811194735456
- Rekha Kumari Agarwal, MDPeoria, AZ 853811265443782
- Joyce George, MDSun City West, AZ 853751669768842
- Harmeet Narula, M.D.Sun City West, AZ 853751487679668
- Margie Hoberg, NMDSurprise, AZ 853741841899887
- Chevon Rariy, M.D.Surprise, AZ 853741841452406
Common questions
What is Steven M. Herf, M.D.'s NPI number?
Steven M. Herf, M.D.'s National Provider Identifier (NPI) is 1821097841, issued on Jul 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Steven M. Herf, M.D. located?
The NPPES record lists a practice address at 12520 W Bajada RD, Peoria, AZ, 85383. Phone: (623) 476-2873. Providers update this record themselves, so call before visiting.
How can I verify Steven M. Herf, M.D.'s license?
NPPES lists Arizona license number 34971, 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 Steven M. Herf, M.D. prescribe under Medicare Part D?
In 2024, Steven M. Herf, M.D. had 19 Medicare Part D claims; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.