Robert Orenstein, DO
Infectious Disease Physician · Phoenix, AZ
Robert Orenstein, DO is an infectious disease physician with a practice address in Phoenix, Arizona, and NPI 1174500565, issued on Dec 27, 2005. Check the license (Arizona 5472, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Orenstein
- Credential
- DO
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 5472 AZ
44468 MN
Self-reported in NPPES; status is on the state search - Practice location
- 5777 E Mayo Blvd, Phoenix, AZ 85054
- Phone
- (480) 301-8000
- Enumerated
- Dec 27, 2005
- Record last updated
- Sep 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101012001051); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 176 in Arizona → Look up another NPI →
Also registered at 5777 E Mayo Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sophia Aguirre, MDEmergency Medicine Physician1285384859
- Erin Alexander, MS, MSGenetic Counselor (M.S.)1487541595
- Nneoma Alozie, MDInternal Medicine Physician1912642695
Verify Robert Orenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 5472Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average infectious disease physician in 2024
286 Medicare Part D claims for 77 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Azithromycin26 claims
- Biktarvy23 claims
- Fluconazole20 claims
- Juluca13 claims
- Tivicay13 claims
- Descovy12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $112.16
1 payment: food and beverage; the largest payer was Ferring Pharmaceuticals Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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.
Bills Medicare through one group practice
- Mayo Clinic ArizonaScottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Orenstein among 176 infectious disease physician records in Arizona
Robert Orenstein, DO is one of 176 infectious disease physician records with a practice address in Arizona. 81% 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, 90% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1987 · median 2001 among the 122 with a school on file
- Record last updated2020 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Arizona
There are 176 infectious disease physician records in Arizona.
All 176 in Arizona → Every provider in Phoenix → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Janis Blair, M.D.Phoenix, AZ 850541124002829
- Shimon Kusne, M.D.Phoenix, AZ 850541770566424
- Maria Teresa Seville, MDPhoenix, AZ 850541326095514
- Jerry Smilack, M.D.Phoenix, AZ 850541720061617
- Holenarasipur Vikram, M.D.Phoenix, AZ 850541205811593
- Humaira Shafi, M.D.Phoenix, AZ 850511356576334
- Jad Akl, MDPhoenix, AZ 850501043134844
- Hazem Alsalman Hnaide, MDPhoenix, AZ 850501356560874
Common questions
What is Robert Orenstein, DO's NPI number?
Robert Orenstein, DO's National Provider Identifier (NPI) is 1174500565, issued on Dec 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert Orenstein, DO located?
The NPPES record lists a practice address at 5777 E Mayo Blvd, Phoenix, AZ, 85054. Phone: (480) 301-8000. Providers update this record themselves, so call before visiting.
How can I verify Robert Orenstein, DO's license?
NPPES lists Arizona license number 5472, 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 Robert Orenstein, DO prescribe under Medicare Part D?
In 2024, Robert Orenstein, DO had 286 Medicare Part D claims for 77 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Robert Orenstein, DO's MIPS final score?
The 2023 MIPS final score is 78.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.