Gershon Yehuda Locker, MD
Medical Oncology Physician · Evanston, IL
Gershon Yehuda Locker, MD is a medical oncology physician with a practice address in Evanston, Illinois, and NPI 1134145469, issued on Jul 13, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gershon Yehuda Locker
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- Practice location
- 2650 Ridge Ave, Evanston, IL 60201
- Phone
- (888) 909-5222
- Enumerated
- Jul 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (847) 570-2336
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 182 in Illinois → Look up another NPI →
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Verify Gershon Yehuda Locker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average medical oncology physician in 2024
76 Medicare Part D claims, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Valsartan13 claims
- Chlorthalidone12 claims
- Potassium Chloride12 claims
- Pramipexole Dihydrochloride12 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.
Gershon Yehuda Locker among 182 medical oncology physician records in Illinois
Gershon Yehuda Locker, MD is one of 182 medical oncology physician records with a practice address in Illinois. 83% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2007 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
All 182 in Illinois → Every provider in Evanston → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Ami Badami, M.D.Evanston, IL 602011073959565
- Bruce Brockstein, MDEvanston, IL 602011740349695
- Nicholas Campbell, MDEvanston, IL 602011942445648
- Thomas Hensing, MDEvanston, IL 602011932132743
- Marisa Hill, MDEvanston, IL 602011639388226
- Janardan Khandekar, MDEvanston, IL 602011851324503
- Richard Knop, MDEvanston, IL 602011629094958
- Robert Marsh, MDEvanston, IL 602011174564116
Common questions
What is Gershon Yehuda Locker, MD's NPI number?
Gershon Yehuda Locker, MD's National Provider Identifier (NPI) is 1134145469, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gershon Yehuda Locker, MD located?
The NPPES record lists a practice address at 2650 Ridge Ave, Evanston, IL, 60201. Phone: (888) 909-5222. Providers update this record themselves, so call before visiting.
How can I verify Gershon Yehuda Locker, MD's license?
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 Gershon Yehuda Locker, MD prescribe under Medicare Part D?
In 2024, Gershon Yehuda Locker, MD had 76 Medicare Part D claims; the average among medical oncology physician prescribers was 703. 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.