Ora B. Gewurz-Singer, MD
Rheumatology Physician · Ann Arbor, MI
Ora B. Gewurz-Singer, MD is a rheumatology physician with a practice address in Ann Arbor, Michigan, and NPI 1962661355, issued on Jun 2, 2008. Check the license (Michigan 4301102012, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Ora B. Gewurz-Singer
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- 4301102012 MI
240437 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1500 East Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 647-5900
- Enumerated
- Jun 2, 2008
- Record last updated
- Jan 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (734) 615-5308
- Medicare enrollment
- Enrolled (PECOS I20130308000397); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 226 in Michigan → Look up another NPI →
Also registered at 1500 East Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samia Abdelnabi, CNMAdvanced Practice Midwife1639404320
- Mahshid Abir, MDEmergency Medicine Physician1790988632
- Barbara Adams, MDPediatric Rheumatology Physician1962412577
- David Adams, MBBSAnesthesiology Physician1346484417
- Gaury Adhikary, MDAnesthesiology Physician1629094297
- Jeremy Adler, MDPediatric Gastroenterology Physician1033243191
Verify Ora B. Gewurz-Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301102012Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,247 Medicare Part D claims for 204 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 36 claims were for opioids.
Most prescribed
- Prednisone239 claims
- Methotrexate182 claims
- Hydroxychloroquine Sulfate121 claims
- Leflunomide67 claims
- Actemra Actpen55 claims
- Gabapentin37 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.
Bills Medicare through one group practice
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ora B. Gewurz-Singer among 226 rheumatology physician records in Michigan
Ora B. Gewurz-Singer, MD is one of 226 rheumatology physician records with a practice address in Michigan. 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 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 36% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2004 · median 2003 among the 156 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Michigan
There are 226 rheumatology physician records in Michigan.
All 226 in Michigan → Every provider in Ann Arbor → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Daniel Clauw, MDAnn Arbor, MI 481091518042126
- Inocencio Cuesta, MDAnn Arbor, MI 481091992746820
- David Fox, MDAnn Arbor, MI 481091154406767
- Samardeep Gupta, M.D.Ann Arbor, MI 481091891712253
- Joseph Holoshitz, MDAnn Arbor, MI 481091508941113
- Mariana Kaplan, MDAnn Arbor, MI 481091235214842
- Puja Khanna, MDAnn Arbor, MI 481091396825071
- Timothy Laing, MDAnn Arbor, MI 481091396820908
Common questions
What is Ora B. Gewurz-Singer, MD's NPI number?
Ora B. Gewurz-Singer, MD's National Provider Identifier (NPI) is 1962661355, issued on Jun 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ora B. Gewurz-Singer, MD located?
The NPPES record lists a practice address at 1500 East Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 647-5900. Providers update this record themselves, so call before visiting.
How can I verify Ora B. Gewurz-Singer, MD's license?
NPPES lists Michigan license number 4301102012, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ora B. Gewurz-Singer, MD prescribe under Medicare Part D?
In 2024, Ora B. Gewurz-Singer, MD had 1,247 Medicare Part D claims for 204 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.