Joshua A. Millstein, D.O.
Internal Medicine Physician · Phoenix, AZ
Joshua A. Millstein, D.O. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1376749721, issued on Jun 22, 2007. Check the license (Arizona 4601, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Joshua A. Millstein
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4601 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1940 W Indian School RD Ste 1, Phoenix, AZ 85015
- Phone
- (602) 782-1880
- Enumerated
- Jun 22, 2007
- Record last updated
- Sep 25, 2023
- Fax
- (602) 671-6915
- Medicaid ID
- 080683 AZ
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 1940 W Indian School RD Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joshua A. Millstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 4601Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
737 Medicare Part D claims for 148 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium60 claims
- Amlodipine Besylate57 claims
- Losartan Potassium53 claims
- Lisinopril38 claims
- Metformin Hcl28 claims
- Pravastatin Sodium25 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.
Industry payments in 2024: $127.81
1 payment: food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joshua A. Millstein among 2,853 internal medicine physician records in Arizona
Joshua A. Millstein, D.O. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 47% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2023 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Phoenix → Internal Medicine Physician nationwide →
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- Kenneth Levy, MDPhoenix, AZ 850151174712806
Common questions
What is Joshua A. Millstein, D.O.'s NPI number?
Joshua A. Millstein, D.O.'s National Provider Identifier (NPI) is 1376749721, issued on Jun 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joshua A. Millstein, D.O. located?
The NPPES record lists a practice address at 1940 W Indian School RD Ste 1, Phoenix, AZ, 85015. Phone: (602) 782-1880. Providers update this record themselves, so call before visiting.
How can I verify Joshua A. Millstein, D.O.'s license?
NPPES lists Arizona license number 4601, 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 Joshua A. Millstein, D.O. prescribe under Medicare Part D?
In 2024, Joshua A. Millstein, D.O. had 737 Medicare Part D claims for 148 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.