Mary A. Dean Onayemi, MD
Obstetrics & Gynecology Physician · Chicago, IL
Mary A. Dean Onayemi, MD is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1770518169, issued on Jul 12, 2006. Check the license (Illinois 036065557, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mary A. Dean Onayemi
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036065557 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1701 W Monterey Ave, Chicago, IL 60643
- Phone
- (773) 238-2282
- Enumerated
- Jul 12, 2006
- Record last updated
- Aug 9, 2022
- Fax
- (773) 238-5746
- Medicare enrollment
- Enrolled (PECOS I20060111000569); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1980
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 1701 W Monterey Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia Hammond, NP-CFamily Nurse Practitioner1992171326
- Vanessa Howard, FNP-BCFamily Nurse Practitioner1093148397
- Eberechukwu Ibe, MDInternal Medicine Physician1841258043
- Christine Jarrett, P.T.Physical Therapist1750591566
- William Johnson, MDInternal Medicine Physician1255381307
- Claudette Macklin, M.D.Internal Medicine Physician1730365586
Verify Mary A. Dean Onayemi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036065557Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
21 Medicare Part D claims for 14 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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 2 group practices
- Advocate Health And Hospitals CorporationBuffalo Grove, IL
- Chicago Family Health Center IncChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary A. Dean Onayemi among 2,062 obstetrics & gynecology physician records in Illinois
Mary A. Dean Onayemi, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1980 · median 2006 among the 1,168 with a school on file
- Record last updated2022 · 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
700 obstetrics & gynecology physician records list a practice address in Chicago
They are 700 of the 63,379 NPPES records with a practice address in Chicago, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Chicago → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Charles Alston, MDChicago, IL 606431922070382
- Whitney Alston, M.D.Chicago, IL 606431548600125
- Barry Fox, M.D.Chicago, IL 606431861504631
- Shauntel Seaton, MDChicago, IL 606431265938393
- Joseph Thomas, MDChicago, IL 606431477504579
- Angela McElwee, M.D.Chicago, IL 606421659301661
- Kirthika Vijayakumar, D.O.Chicago, IL 606421093241176
- Irving Kohn, MDChicago, IL 606451891814240
Common questions
What is Mary A. Dean Onayemi, MD's NPI number?
Mary A. Dean Onayemi, MD's National Provider Identifier (NPI) is 1770518169, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Dean Onayemi, MD located?
The NPPES record lists a practice address at 1701 W Monterey Ave, Chicago, IL, 60643. Phone: (773) 238-2282. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Dean Onayemi, MD's license?
NPPES lists Illinois license number 036065557, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary A. Dean Onayemi, MD prescribe under Medicare Part D?
In 2024, Mary A. Dean Onayemi, MD had 21 Medicare Part D claims for 14 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.