Wayne C. Williamson, MD
Geriatric Medicine (Internal Medicine) Physician · Chicago, IL
Wayne C. Williamson, MD is a geriatric medicine (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1699828061, issued on Jan 19, 2007. Check the license (Illinois 036059450, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Wayne C. Williamson
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 036059450 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1276 N Clybourn Ave, Chicago, IL 60610
- Phone
- (312) 337-1073
- Enumerated
- Jan 19, 2007
- Record last updated
- Aug 3, 2023
- Medicaid ID
- 036059450 IL
- Medicare enrollment
- Enrolled (PECOS I20050705000897); accepts Medicare assignment
- Medical or professional school
- University Of Cincinnati College Of Medicine, 1978
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 179 in Illinois → Look up another NPI →
Also registered at 1276 N Clybourn Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Anderson, LDN, RDRegistered Dietitian1669284840
- Daniell Ashford, NPFamily Nurse Practitioner1962877316
- Mary Brow, APNNurse Practitioner1619077559
- Nicole Burton, MDPediatrics Physician1962643445
- Alisun CashillWomen's Health Nurse Practitioner1194688697
- Algean Garner, PSY.D.Clinical Psychologist1588732416
Verify Wayne C. Williamson 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 036059450Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
2,435 Medicare Part D claims for 233 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 36 claims were for opioids.
Most prescribed
- Amlodipine Besylate115 claims
- Atorvastatin Calcium101 claims
- Albuterol Sulfate Hfa96 claims
- Meloxicam95 claims
- Gabapentin68 claims
- Metoprolol Succinate64 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
- Vivek Gupta, M.D., S.C.Chicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wayne C. Williamson among 179 geriatric medicine (internal medicine) physician records in Illinois
Wayne C. Williamson, MD is one of 179 geriatric medicine (internal medicine) 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 2007, is newer than 60% of them.
- NPI issued2007 · 60% of these records are older, 25% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1978 · median 1997 among the 76 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Illinois
There are 179 geriatric medicine (internal medicine) physician records in Illinois.
All 179 in Illinois → Every provider in Chicago → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Ann Allie, M.D.Chicago, IL 606111619162955
- Sara Bradley, MDChicago, IL 606111487873808
- Eliana GellerChicago, IL 606111053816280
- Lee Lindquist, MD, MPH, MBAChicago, IL 606111346279213
- June McKoy, MDChicago, IL 606111164589917
- Chandni Patel, M.D.Chicago, IL 606111811300635
- Anthony Perry, M.D.Chicago, IL 606111689623803
- Alexandra Petrakos, MDChicago, IL 606111326545781
Common questions
What is Wayne C. Williamson, MD's NPI number?
Wayne C. Williamson, MD's National Provider Identifier (NPI) is 1699828061, issued on Jan 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Wayne C. Williamson, MD located?
The NPPES record lists a practice address at 1276 N Clybourn Ave, Chicago, IL, 60610. Phone: (312) 337-1073. Providers update this record themselves, so call before visiting.
How can I verify Wayne C. Williamson, MD's license?
NPPES lists Illinois license number 036059450, 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 Wayne C. Williamson, MD prescribe under Medicare Part D?
In 2024, Wayne C. Williamson, MD had 2,435 Medicare Part D claims for 233 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.