William G. Grehan, MD
Anesthesiology Physician · Melrose Park, IL
William G. Grehan, MD is an anesthesiology physician with a practice address in Melrose Park, Illinois, and NPI 1417961061, issued on Jul 28, 2006. Check the license (Illinois 036-082615, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William G. Grehan
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 036-082615 IL
89895 SC
Self-reported in NPPES; status is on the state search - Practice location
- 701 W North Ave, Melrose Park, IL 60160
- Phone
- (708) 681-3202
- Enumerated
- Jul 28, 2006
- Record last updated
- Apr 22, 2025
- Medicaid ID
- 36082615 IL
- Medicare enrollment
- Enrolled (PECOS I20251204004745); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,575 in Illinois → Look up another NPI →
Also registered at 701 W North Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie BartoskiOccupational Therapist1114581741
- Nicolette Bernhardt, PSYDClinical Psychologist1134350366
- Jonathan BickmannCertified Registered Nurse Anesthetist1164061594
- Patricia BodenSpeech-Language Pathologist1851625644
- Case Brewer, CRNARegistered Nurse1932931102
- Andrew Christ, CRNACertified Registered Nurse Anesthetist1487123832
Verify William G. Grehan 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 036-082615Check 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): 84.4 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).
5 hospitals and group practices
- Advocate Health And Hospitals CorporationOak Lawn, IL
- Black Hills Surgical Hospital LLCRapid City, SD · Acute Care Hospitals
- Cep America - Anesthesia PCHilton Head, SC
- Gottlieb Midwest Anesthesiologists, LLCMelrose Park, IL
- Midwest Anesthesia Providers SCBelleville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
William G. Grehan among 2,575 anesthesiology physician records in Illinois
William G. Grehan, MD is one of 2,575 anesthesiology physician records with a practice address in Illinois. 71% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 61% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1992 · median 2006 among the 1,608 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 anesthesiology physician records list a practice address in Melrose Park
They are 13 of the 634 NPPES records with a practice address in Melrose Park, and 2,575 anesthesiology physician records in Illinois.
All 2,575 in Illinois → Every provider in Melrose Park → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Bohdan Charkewycz, M.D.Melrose Park, IL 601601700822376
- Qian Guo, M.DMelrose Park, IL 601601962444208
- Michael King, M.D.Melrose Park, IL 601601487781381
- Evin KoleiniMelrose Park, IL 601601215422084
- Rebecca Lim, M.D.Melrose Park, IL 601601821090606
- Robert Molnar, DOMelrose Park, IL 601601881601243
- Ryan Munoz, M.D.Melrose Park, IL 601601558551572
- Nawal Ragheb-Mueller, D.O.Melrose Park, IL 601601700869195
Common questions
What is William G. Grehan, MD's NPI number?
William G. Grehan, MD's National Provider Identifier (NPI) is 1417961061, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William G. Grehan, MD located?
The NPPES record lists a practice address at 701 W North Ave, Melrose Park, IL, 60160. Phone: (708) 681-3202. Providers update this record themselves, so call before visiting.
How can I verify William G. Grehan, MD's license?
NPPES lists Illinois license number 036-082615, 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 William G. Grehan, MD's MIPS final score?
The 2023 MIPS final score is 84.4 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.