Patricia Lynn Demarais, MD
Infectious Disease Physician · Oak Forest, IL
Patricia Lynn Demarais, MD is an infectious disease physician with a practice address in Oak Forest, Illinois, and NPI 1164508107, issued on Oct 31, 2006. Check the license (Illinois 036079808, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Patricia Lynn Demarais
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 036079808 IL
Self-reported in NPPES; status is on the state search - Practice location
- 15900 South Cicero Ave, Oak Forest, IL 60452
- Phone
- (708) 633-4131
- Enumerated
- Oct 31, 2006
- Record last updated
- Apr 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 464 in Illinois → Look up another NPI →
Also registered at 15900 South Cicero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Patricia Lynn Demarais 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 036079808Check 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 practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Patricia Lynn Demarais among 464 infectious disease physician records in Illinois
Patricia Lynn Demarais, MD 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 fileNo · 67% of these records are
- Record last updated2021 · 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 Oak Forest → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Homer Abiad, M.D.Oak Forest, IL 604521871596817
- Saira Ajmal, M.D.Oak Lawn, IL 604531275962672
- Frances Boly, DOOak Lawn, IL 604531568859775
- Robert Citronberg, M.D.Oak Lawn, IL 604531982655395
- Rania Saleh, M.D.New Lenox, IL 604511326280264
- Stephen Sokalski, DOOak Lawn, IL 604531720074685
- Kathy Tin, DOOak Lawn, IL 604531851851448
- Adam Treitman, MDOak Lawn, IL 604531649266503
Common questions
What is Patricia Lynn Demarais, MD's NPI number?
Patricia Lynn Demarais, MD's National Provider Identifier (NPI) is 1164508107, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Patricia Lynn Demarais, MD located?
The NPPES record lists a practice address at 15900 South Cicero Ave, Oak Forest, IL, 60452. Phone: (708) 633-4131. Providers update this record themselves, so call before visiting.
How can I verify Patricia Lynn Demarais, MD's license?
NPPES lists Illinois license number 036079808, 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 Patricia Lynn Demarais, MD's MIPS final score?
The 2023 MIPS final score is 84.6 of 100, reported for the practice group. 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.