NPPES file of Aug 9, 2026

Karen Arnell Sanders, MD

Obstetrics & Gynecology Physician · Barrington, IL

Karen Arnell Sanders, MD is an obstetrics & gynecology physician with a practice address in Barrington, Illinois, and NPI 1134114697, issued on Sep 12, 2005. Check the license (Illinois 036097761, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134114697
Name
Karen Arnell Sanders
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
036097761 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
Sep 12, 2005
Record last updated
May 22, 2024
Fax
(847) 381-6372
Medicaid ID
036097761 IL
Medicare enrollment
Enrolled (PECOS I20040505000777); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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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.

  1. Magdalena Chlebowicz, D.O.Obstetrics & Gynecology Physician1538460084
  2. Ralph Frank, DOHospitalist Physician1508037201
  3. Kaitlin Steffenhagen, DOObstetrics & Gynecology Physician1760877963
  4. Catherine TanObstetrics & Gynecology Physician1518429422
  5. Marguerite Tyler, DNP-FNPObstetrics & Gynecology Nurse Practitioner1962960138

Verify Karen Arnell Sanders in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036097761
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $24.22

1 payment: food and beverage; the largest payer was Abiomed. 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.

  1. Karen Sanders$24.22
  2. Specialty average$1,030.61

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

  1. 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).

Karen Arnell Sanders among 2,062 obstetrics & gynecology physician records in Illinois

Karen Arnell Sanders, 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1995 · median 2006 among the 1,168 with a school on file
  • Record last updated2024 · 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.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. David Crandall, M.D.Lake Barrington, IL 600101033195383
  2. Thomas Digiulio, MDBarrington, IL 600101053380642
  3. Vidhi Gadson, M.D.Barrington, IL 600101164681151
  4. Jae Han, M.D.Barrington, IL 600101679740948
  5. Heather Herbolsheimer, D.O.Barrington, IL 600101669495743
  6. Prafulla Koneru, M.DSouth Barrington, IL 600101093700072
  7. Thomas Meyer, M.D.Lake Barrington, IL 600101144206012
  8. Jennifer Moreira, MDBarrington, IL 600101760700280

Common questions

What is Karen Arnell Sanders, MD's NPI number?

Karen Arnell Sanders, MD's National Provider Identifier (NPI) is 1134114697, issued on Sep 12, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Karen Arnell Sanders, MD 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 Karen Arnell Sanders, MD's license?

NPPES lists Illinois license number 036097761, 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.