Harold A. Kessler, M.D.
Infectious Disease Physician · Chicago, IL
Harold A. Kessler, M.D. is an infectious disease physician with a practice address in Chicago, Illinois, and NPI 1730140534, issued on Mar 31, 2006. Check the license (Illinois 036051260, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Harold A. Kessler
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 036051260 IL
Self-reported in NPPES; status is on the state search - Practice location
- 600 S Paulina St, Chicago, IL 60612
- Phone
- (312) 942-2061
- Enumerated
- Mar 31, 2006
- Record last updated
- Sep 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (312) 942-2184
- Medicaid ID
- 036051260 IL
- Medicare enrollment
- Enrolled (PECOS I20091019000368); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1974
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 464 in Illinois → Look up another NPI →
Also registered at 600 S Paulina St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Foster Adams, D.O.Critical Care Medicine (Internal Medicine) Physician1376938977
- Oluwamuyiwa AdebayoStudent in an Organized Health Care Education/Training Program1245087477
- Jubril AdepojuPlastic Surgery Physician1457097081
- Neelum Aggarwal, M.D.Neurology Physician1154450799
Verify Harold A. Kessler 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 036051260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average infectious disease physician in 2024
232 Medicare Part D claims for 18 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 77% of claims.
Most prescribed
- Juluca58 claims
- Dovato37 claims
- Triumeq29 claims
- Prezcobix22 claims
- Baclofen14 claims
- Biktarvy12 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.
Bills Medicare through one group practice
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harold A. Kessler among 464 infectious disease physician records in Illinois
Harold A. Kessler, M.D. is one of 464 infectious disease physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1974 · median 2004 among the 311 with a school on file
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Illinois
There are 464 infectious disease physician records in Illinois.
All 464 in Illinois → Every provider in Chicago → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Stephanie Black, M.D.Chicago, IL 606121316908791
- Larry Goodman, M.DChicago, IL 606121356396550
- Alan Harris, M.D.Chicago, IL 606121699736488
- Mary Hayden, M.D.Chicago, IL 606121730140187
- Ronald Hershow, M.D.Chicago, IL 606121942241054
- Preeti Kaur, M.D.,M.P.H.Chicago, IL 606121972560639
- John KowalskiChicago, IL 606121235178708
- Katayoun Rezai, M.D.Chicago, IL 606121730111576
Common questions
What is Harold A. Kessler, M.D.'s NPI number?
Harold A. Kessler, M.D.'s National Provider Identifier (NPI) is 1730140534, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harold A. Kessler, M.D. located?
The NPPES record lists a practice address at 600 S Paulina St, Chicago, IL, 60612. Phone: (312) 942-2061. Providers update this record themselves, so call before visiting.
How can I verify Harold A. Kessler, M.D.'s license?
NPPES lists Illinois license number 036051260, 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 Harold A. Kessler, M.D. prescribe under Medicare Part D?
In 2024, Harold A. Kessler, M.D. had 232 Medicare Part D claims for 18 beneficiaries; the average among infectious disease physician prescribers was 689. 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.