Caitlin Callahan Parker, M.D.
Obstetrics & Gynecology Physician · Ypsilanti, MI
Caitlin Callahan Parker, M.D. is an obstetrics & gynecology physician with a practice address in Ypsilanti, Michigan, and NPI 1780002568, issued on Mar 31, 2014. Check the license (Michigan 4301104901, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Caitlin Callahan Parker
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 4301104901 MI
Self-reported in NPPES; status is on the state search - Practice location
- 4936 W Clark RD Ste 100, Ypsilanti, MI 48197
- Phone
- (734) 434-6200
- Enumerated
- Mar 31, 2014
- Record last updated
- Jul 3, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (734) 434-7373
- Medicare enrollment
- Enrolled (PECOS I20180804000166); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2014
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,776 in Michigan → Look up another NPI →
Also registered at 4936 W Clark RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelsey Behan, MDObstetrics & Gynecology Physician1740711126
- Tamika Martin, M.D.Obstetrics & Gynecology Physician1841554078
- Sara Muszynski, MDObstetrics & Gynecology Physician1710374376
- Anna Rujan, MDObstetrics & Gynecology Physician1437735479
Verify Caitlin Callahan Parker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301104901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
81 Medicare Part D claims for 25 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol35 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 Health Services CorporationYpsilanti, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Caitlin Callahan Parker among 1,776 obstetrics & gynecology physician records in Michigan
Caitlin Callahan Parker, M.D. 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 2014, is newer than 66% of them.
- NPI issued2014 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2014 · median 2007 among the 1,003 with a school on file
- Record last updated2018 · 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).
43 obstetrics & gynecology physician records list a practice address in Ypsilanti
They are 43 of the 3,625 NPPES records with a practice address in Ypsilanti, and 1,776 obstetrics & gynecology physician records in Michigan.
All 1,776 in Michigan → Every provider in Ypsilanti → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Susanne Archer, M.D.Ypsilanti, MI 481971851360945
- Wesley Beemer, M.D.Ypsilanti, MI 481971578531331
- Rajiv Deenadayalu, M.D.Ypsilanti, MI 481971699743468
- Rossana Degrood, M.D.Ypsilanti, MI 481971285603308
- Anne Frantz, MDYpsilanti, MI 481971467412585
- Barbara Hooberman, MDYpsilanti, MI 481971609836485
- Lisa Jeffries, MDYpsilanti, MI 481971154376598
- Allison Kreske, M.D.Ypsilanti, MI 481971194793968
Common questions
What is Caitlin Callahan Parker, M.D.'s NPI number?
Caitlin Callahan Parker, M.D.'s National Provider Identifier (NPI) is 1780002568, issued on Mar 31, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Caitlin Callahan Parker, M.D. located?
The NPPES record lists a practice address at 4936 W Clark RD Ste 100, Ypsilanti, MI, 48197. Phone: (734) 434-6200. Providers update this record themselves, so call before visiting.
How can I verify Caitlin Callahan Parker, M.D.'s license?
NPPES lists Michigan license number 4301104901, 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 Caitlin Callahan Parker, M.D. prescribe under Medicare Part D?
In 2024, Caitlin Callahan Parker, M.D. had 81 Medicare Part D claims for 25 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.