Catherine Danielle Tan
Obstetrics & Gynecology Physician · Barrington, IL
Catherine Danielle Tan is an obstetrics & gynecology physician with a practice address in Barrington, Illinois, and NPI 1518429422, issued on Apr 1, 2019. Check the license (Illinois 036.166383, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Catherine Danielle Tan
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.166383 IL
Self-reported in NPPES; status is on the state search - Practice location
- 27790 W Highway 22 Ste 36, Barrington, IL 60010
- Phone
- (847) 381-8181
- Enumerated
- Apr 1, 2019
- Record last updated
- Sep 19, 2023
- Fax
- (847) 381-6372
- Medicare enrollment
- Enrolled (PECOS I20231003002350); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2019
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 27790 W Highway 22 Ste 36
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Magdalena Chlebowicz, D.O.Obstetrics & Gynecology Physician1538460084
- Ralph Frank, DOHospitalist Physician1508037201
- Karen Sanders, MDObstetrics & Gynecology Physician1134114697
- Kaitlin Steffenhagen, DOObstetrics & Gynecology Physician1760877963
- Marguerite Tyler, DNP-FNPObstetrics & Gynecology Nurse Practitioner1962960138
Verify Catherine Danielle Tan 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 036.166383Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 99.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Access Community Health NetworkChicago, IL
- Advocate Health And Hospitals CorporationBuffalo Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Danielle Tan among 2,062 obstetrics & gynecology physician records in Illinois
Catherine Danielle Tan 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 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2019 · median 2006 among the 1,168 with a school on file
- Record last updated2023 · 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).
15 obstetrics & gynecology physician records list a practice address in Barrington
They are 15 of the 756 NPPES records with a practice address in Barrington, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Barrington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- David Crandall, M.D.Lake Barrington, IL 600101033195383
- Thomas Digiulio, MDBarrington, IL 600101053380642
- Vidhi Gadson, M.D.Barrington, IL 600101164681151
- Jae Han, M.D.Barrington, IL 600101679740948
- Heather Herbolsheimer, D.O.Barrington, IL 600101669495743
- Prafulla Koneru, M.DSouth Barrington, IL 600101093700072
- Thomas Meyer, M.D.Lake Barrington, IL 600101144206012
- Jennifer Moreira, MDBarrington, IL 600101760700280
Common questions
What is Catherine Danielle Tan's NPI number?
Catherine Danielle Tan's National Provider Identifier (NPI) is 1518429422, issued on Apr 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Danielle Tan located?
The NPPES record lists a practice address at 27790 W Highway 22 Ste 36, Barrington, IL, 60010. Phone: (847) 381-8181. Providers update this record themselves, so call before visiting.
How can I verify Catherine Danielle Tan's license?
NPPES lists Illinois license number 036.166383, 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.
What is Catherine Danielle Tan's MIPS final score?
The 2023 MIPS final score is 99.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.