Gregory P. Witkowski, MD
Orthopaedic Surgery Physician · Warrenville, IL
Gregory P. Witkowski, MD is an orthopaedic surgery physician with a practice address in Warrenville, Illinois, and NPI 1750598850, issued on May 17, 2007. Check the license (Illinois 036123834, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gregory P. Witkowski
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- 036123834 IL
036-123834 IL
Self-reported in NPPES; status is on the state search - Practice location
- 27650 Ferry RD, Warrenville, IL 60555
- Phone
- (630) 225-2663
- Enumerated
- May 17, 2007
- Record last updated
- Feb 19, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (630) 225-2399
- Medicaid ID
- 036123834 IL
- Medicare enrollment
- Enrolled (PECOS I20090819000237); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 995 in Illinois → Look up another NPI →
Also registered at 27650 Ferry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michele Arthurs, ATCAthletic Trainer1417532441
- Emily Atchison, BSN, RNOrthopedic Registered Nurse1235006891
- Lisa Augustyn, PTPhysical Therapist1043460868
- Brian Babka, MDSports Medicine (Family Medicine) Physician1881688638
- Shannon Backes, PAPhysician Assistant1386896793
- Joy Baganz, OTOccupational Therapist1295774495
Verify Gregory P. Witkowski 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 036123834Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
189 Medicare Part D claims for 82 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 66 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen40 claims
- Gabapentin31 claims
- Ondansetron Hcl29 claims
- Tramadol Hcl16 claims
- Diclofenac Sodium11 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 MIPS final score for 2023 (Medicare payment program): 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).
Industry payments in 2024: $6,532.09
12 payments; by number, the most common kind was food and beverage; the largest payer was Arteriocyte Medical Systems, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Central Dupage Physician GroupWheaton, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory P. Witkowski among 995 orthopaedic surgery physician records in Illinois
Gregory P. Witkowski, MD is one of 995 orthopaedic surgery physician records with a practice address in Illinois. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 43% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2003 · median 2001 among the 556 with a school on file
- Record last updated2018 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 orthopaedic surgery physician records list a practice address in Warrenville
They are 10 of the 517 NPPES records with a practice address in Warrenville, and 995 orthopaedic surgery physician records in Illinois.
All 995 in Illinois → Every provider in Warrenville → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Aaron Bare, MDWarrenville, IL 605551902869670
- Sanjeev Bhatia, M.D.Warrenville, IL 605551174751440
- David Chang, MDWarrenville, IL 605551013907062
- Lenard Labelle, MDWarrenville, IL 605551679562870
- Charles Lupo, MDWarrenville, IL 605551063644854
- David Mochel, MDWarrenville, IL 605551457341406
- Mossub Qatu, MDWarrenville, IL 605551538652664
- William Sterba, M.D.Warrenville, IL 605551104877182
Common questions
What is Gregory P. Witkowski, MD's NPI number?
Gregory P. Witkowski, MD's National Provider Identifier (NPI) is 1750598850, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory P. Witkowski, MD located?
The NPPES record lists a practice address at 27650 Ferry RD, Warrenville, IL, 60555. Phone: (630) 225-2663. Providers update this record themselves, so call before visiting.
How can I verify Gregory P. Witkowski, MD's license?
NPPES lists Illinois license number 036123834, 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 Gregory P. Witkowski, MD prescribe under Medicare Part D?
In 2024, Gregory P. Witkowski, MD had 189 Medicare Part D claims for 82 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Gregory P. Witkowski, MD's MIPS final 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), 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.