Mary Riwes, D.O.
Medical Oncology Physician · Ann Arbor, MI
Mary Riwes, D.O. is a medical oncology physician with a practice address in Ann Arbor, Michigan, and NPI 1750548434, issued on May 20, 2008. Check the license (Michigan 5101020742, as entered in NPPES) on the Michigan Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Riwes
- Credential
- D.O.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 5101020742 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-4000
- Enumerated
- May 20, 2008
- Entity
- Type 1 · individual
Also registered at 1500 E Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan Aaron, MDObstetrics & Gynecology Physician1578307724
- Keith Aaronson, MDInternal Medicine Physician1144305301
- Rajani Aatre, M.S., M.SC.Counselor1962122457
- Anjelica Abate, MDStudent in an Organized Health Care Education/Training Program1841819216
- Nicole Abbott, CRNACertified Registered Nurse Anesthetist1790329860
- Ahmed Abdel-Latif, M.D.Cardiovascular Disease Physician1518181239
Verify Mary Riwes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine
Search for license 5101020742Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
76% fewer Medicare Part D claims than the average medical oncology physician in 2024
174 Medicare Part D claims for 23 beneficiaries, against an average of 732 among the 2,742 providers of this specialty who prescribed in Part D.
Most prescribed
- Eliquis26 claims
- Jakafi18 claims
- Dexamethasone16 claims
- Cosentyx Sensoready Pen11 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: $1,201.00
3 payments, mostly food and beverage; the largest payer was National Marrow Donor Program. The 2,246 providers of this specialty with any payment received $11,943.39 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.
One hospital or facility affiliation
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Medical Oncology Physician providers in Michigan
There are 88 medical oncology physician records in Michigan.
Other medical oncology physician records in Michigan
- Eugene Agnone, M.D.Roseville, MI1699860585
- Muhammad Ahmed, M.D.Three Rivers, MI1417997065
- Adil Akhtar, M.D.Sterling Heights, MI1609829001
- Ayham Al Ashkar, MDRoyal Oak, MI1417084799
- Kathryn Alguire, M.D.Norton Shores, MI1568468882
- Mohammad Alhyari, MDGrand Rapids, MI1346554912
- Haythem Ali, M.D.Detroit, MI1174691695
- Joshi Alumkal, MDAnn Arbor, MI1114036720
- Joseph Anderson, M.D.Royal Oak, MI1629146154
- Naveed Aslam, MDTroy, MI1235146002
Common questions
What is Mary Riwes, D.O.'s NPI number?
Mary Riwes, D.O.'s National Provider Identifier (NPI) is 1750548434, issued on May 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Riwes, D.O. located?
The NPPES record lists a practice address at 1500 E Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-4000. Providers update this record themselves, so call before visiting.
How can I verify Mary Riwes, D.O.'s license?
NPPES lists Michigan license number 5101020742, as entered by the provider. Search the Michigan Board of Medicine at https://www.michigan.gov/lara/bureau-list/bpl/health/hp-lic-health-prof/medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Riwes, D.O. prescribe under Medicare Part D?
In 2024, Mary Riwes, D.O. had 174 Medicare Part D claims for 23 beneficiaries; the average among medical oncology physician prescribers was 732. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.