Kenneth Hayes, M.D.
Internal Medicine Physician · Chicago, IL
Kenneth Hayes, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1700812872, issued on Jun 23, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Kenneth Hayes
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 20 S Clark St, Chicago, IL 60603
- Phone
- (312) 926-7443
- Enumerated
- Jun 23, 2006
- Entity
- Type 1 · individual
Also registered at 20 S Clark St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristin Ballenger, DPTPhysical Therapist1639486657
- Amanda Chiagouris, D.P.T.Physical Therapist1972670677
- Elyse Esrig, M.D.Internal Medicine Physician1356388201
- Mary Gawne, APNNurse Practitioner1952315582
- Lorna Griffin, P.T.Physical Therapist1558387704
- Jeffrey Kopin, M.D.Internal Medicine Physician1093754970
Verify Kenneth Hayes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,701 Medicare Part D claims for 256 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium339 claims
- Amlodipine Besylate217 claims
- Rosuvastatin Calcium145 claims
- Losartan Potassium120 claims
- Levothyroxine Sodium98 claims
- Metoprolol Succinate82 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.
The Medicare quality score for 2023: 94.1 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).
2 hospital and facility affiliations
- Northwestern Medical Faculty FoundationChicago, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
3,291 internal medicine physician records list a Chicago practice address
They are 3,291 of the 63,379 NPPES records with a Chicago practice address, and 8,522 internal medicine physician records in Illinois.
All 3,291 in Chicago → All 8,522 in Illinois → Every provider in Chicago →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Pamela Abadi, D.O.Winfield, IL1588820179
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is Kenneth Hayes, M.D.'s NPI number?
Kenneth Hayes, M.D.'s National Provider Identifier (NPI) is 1700812872, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Hayes, M.D. located?
The NPPES record lists a practice address at 20 S Clark St, Chicago, IL, 60603. Phone: (312) 926-7443. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Hayes, M.D.'s license?
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 Kenneth Hayes, M.D. prescribe under Medicare Part D?
In 2024, Kenneth Hayes, M.D. had 2,701 Medicare Part D claims for 256 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Kenneth Hayes, M.D.'s Medicare quality score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.