NPPES file of Aug 9, 2026

Stephen Whitfield, MD

Family Medicine Physician · Oak Park, IL

Stephen Whitfield, MD is a family medicine physician with a practice address in Oak Park, Illinois, and NPI 1942691613, issued on Feb 16, 2015. Check the license (Illinois 036.160421, 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
1942691613
Name
Stephen Whitfield
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
036.160421 IL
Self-reported in NPPES; status is on the state search
Practice location
1010 Lake St Ste 301, Oak Park, IL 60301
Phone
(708) 524-8600
Enumerated
Feb 16, 2015
Record last updated
Mar 24, 2024
Medicare enrollment
Enrolled (PECOS I20240404001633); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2019
Telehealth
Offers telehealth (CMS)
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 1010 Lake St Ste 301

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Matthew Hagenswiecicki, DOFamily Medicine Physician1730747924
  2. Christa Harlin-Egan, MDFamily Medicine Physician1881171122
  3. Paul Kungl, MDFamily Medicine Physician1831234749
  4. Kathryn Vanbuskirk, D.O.Family Medicine Physician1073045266
  5. Elizabeth Werner, PA-CPhysician Assistant1518690247

Verify Stephen Whitfield 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 036.160421
    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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95% fewer Medicare Part D claims than the average family medicine physician in 2024

194 Medicare Part D claims for 72 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Stephen Whitfield194
  2. Specialty average3,544

Most prescribed

  1. Hydrocodone-Acetaminophen19 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.

Industry payments in 2024: $70.40

3 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Whitfield$70.40
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Dynamic Physical Therapy, Inc.Oak Park, IL
  2. Lake Street Family Physicians SC IncOak Park, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephen Whitfield among 6,215 family medicine physician records in Illinois

Stephen Whitfield, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 68% of them.

  • NPI issued2015 · 68% of these records are older, 30% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2019 · median 2006 among the 3,714 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

86 family medicine physician records list a practice address in Oak Park

They are 86 of the 2,307 NPPES records with a practice address in Oak Park, and 6,215 family medicine physician records in Illinois.

The 8 family medicine physician records with the nearest ZIP codes

  1. Hung Duong, MDOak Park, IL 603011245257781
  2. Peter Grant, M.D.Oak Park, IL 603011306853858
  3. Nancy Gryniewicz, M.D.Oak Park, IL 603011558368043
  4. Stephen Humowiecki, MDOak Park, IL 603011477533560
  5. Mary Hutton, MDOak Park, IL 603011164415808
  6. Mary Kelly, D.O.Oak Park, IL 603011912087560
  7. Paul Kungl, MDOak Park, IL 603011831234749
  8. Michael Kyle, MDOak Park, IL 603011578556544

Common questions

What is Stephen Whitfield, MD's NPI number?

Stephen Whitfield, MD's National Provider Identifier (NPI) is 1942691613, issued on Feb 16, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Whitfield, MD located?

The NPPES record lists a practice address at 1010 Lake St Ste 301, Oak Park, IL, 60301. Phone: (708) 524-8600. Providers update this record themselves, so call before visiting.

How can I verify Stephen Whitfield, MD's license?

NPPES lists Illinois license number 036.160421, 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 Stephen Whitfield, MD prescribe under Medicare Part D?

In 2024, Stephen Whitfield, MD had 194 Medicare Part D claims for 72 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.