Sara Jean Slezak, D.O.
Obstetrics & Gynecology Physician · Chicago, IL
Sara Jean Slezak, D.O. is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1285128926, issued on Jun 17, 2018. Check the license (Illinois 036.161001, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sara Jean Slezak
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.161001 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2001 S California Ave Ste 100, Chicago, IL 60608
- Phone
- (773) 584-6200
- Enumerated
- Jun 17, 2018
- Record last updated
- Jan 22, 2026
- Medicare enrollment
- Enrolled (PECOS I20220825001474); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2018
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 2001 S California Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kalinee Alston, PA-CMedical Physician Assistant1851985824
- Jessica Boland, LCSWClinical Social Worker1093008443
- Angelina Bravo, FNP-BCFamily Nurse Practitioner1952957896
- Maria Laura Casalegno, MDInternal Medicine Physician1578067815
- Lizbeth Garcia Rodriguez, MDFamily Medicine Physician1861185704
- Georgina Haro, LCSWMental Health Counselor1275149502
Verify Sara Jean Slezak 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 036.161001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $15.10
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sara Jean Slezak among 2,062 obstetrics & gynecology physician records in Illinois
Sara Jean Slezak, D.O. 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 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2018 · median 2006 among the 1,168 with a school on file
- Record last updated2026 · 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
- Karla Clark, MDChicago, IL 606081598706699
- Marlene Green, M.D.Chicago, IL 606081447333166
- Theodore Jarrett, M.D.Chicago, IL 606081356435838
- Ian Jasenof, M.D.Chicago, IL 606081578509428
- Narendra Karmali, M.D.Chicago, IL 606081962504027
- David Michael, MDChicago, IL 606081457434144
- Patrick Michel, M.D.Chicago, IL 606081487639514
- Sylvia Moscoso, M.D.Chicago, IL 606081689649105
Common questions
What is Sara Jean Slezak, D.O.'s NPI number?
Sara Jean Slezak, D.O.'s National Provider Identifier (NPI) is 1285128926, issued on Jun 17, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Sara Jean Slezak, D.O. located?
The NPPES record lists a practice address at 2001 S California Ave Ste 100, Chicago, IL, 60608. Phone: (773) 584-6200. Providers update this record themselves, so call before visiting.
How can I verify Sara Jean Slezak, D.O.'s license?
NPPES lists Illinois license number 036.161001, 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.
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.