Catherine Kerr Winslow, MD
Obstetrics & Gynecology Physician · Owosso, MI
Catherine Kerr Winslow, MD is an obstetrics & gynecology physician with a practice address in Owosso, Michigan, and NPI 1003865205, issued on May 8, 2006. Check the license (Michigan 4301072002, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Catherine Kerr Winslow
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 4301072002 MI
Self-reported in NPPES; status is on the state search - Practice location
- 818 W King St, Owosso, MI 48867
- Phone
- (989) 729-4300
- Enumerated
- May 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040622001524); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,776 in Michigan → Look up another NPI →
Also registered at 818 W King St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rany Aburashed, D.ONeurology Physician1790909711
- Walid Azmeh, M.D.Surgery Physician1063527182
- Carlie Beningo, PAPhysician Assistant1265621577
- Mandell Bookman, M.D.Urology Physician1598775702
- Markus ByronFamily Nurse Practitioner1013678010
- Lukas Miller, FNPFamily Nurse Practitioner1740144377
Verify Catherine Kerr Winslow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301072002Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
347 Medicare Part D claims for 109 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Estradiol66 claims
- Clobetasol Propionate41 claims
- Estradiol (Twice Weekly)36 claims
- Progesterone25 claims
- Yuvafem24 claims
- Fluconazole14 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
- Iha Olma Specialty 1 LLCLivonia, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Kerr Winslow among 1,776 obstetrics & gynecology physician records in Michigan
Catherine Kerr Winslow, MD is one of 1,776 obstetrics & gynecology physician records with a practice address in Michigan. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 57% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1998 · median 2007 among the 1,003 with a school on file
- Record last updated2007 · 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 207V00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Michigan
There are 1,776 obstetrics & gynecology physician records in Michigan.
All 1,776 in Michigan → Every provider in Owosso → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Cesar Chaves, MDOwosso, MI 488671457335226
- Ira Frye, MDOwosso, MI 488671184846354
- Jessica Laforest, MDOwosso, MI 488671437378767
- Lori Burke, MD.Okemos, MI 488641245430024
- Sung Lee, M.D.Okemos, MI 488641477571461
- Thomas Petroff, DOOkemos, MI 488641578542452
- Sandra Russell, DOOkemos, MI 488641417937723
- Kristen Carrillo-Kappus, MD, MPHMount Pleasant, MI 488581639707896
Common questions
What is Catherine Kerr Winslow, MD's NPI number?
Catherine Kerr Winslow, MD's National Provider Identifier (NPI) is 1003865205, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Kerr Winslow, MD located?
The NPPES record lists a practice address at 818 W King St, Owosso, MI, 48867. Phone: (989) 729-4300. Providers update this record themselves, so call before visiting.
How can I verify Catherine Kerr Winslow, MD's license?
NPPES lists Michigan license number 4301072002, 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 Catherine Kerr Winslow, MD prescribe under Medicare Part D?
In 2024, Catherine Kerr Winslow, MD had 347 Medicare Part D claims for 109 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.