Jeffrey George Geohas, M.D.
Internal Medicine Physician · Evanston, IL
Jeffrey George Geohas, M.D. is an internal medicine physician with a practice address in Evanston, Illinois, and NPI 1609846351, issued on Jan 25, 2006. Check the license (Illinois 036093330, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jeffrey George Geohas
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036093330 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Ridge Ave, Evanston, IL 60201
- Phone
- (847) 869-1192
- Enumerated
- Jan 25, 2006
- Record last updated
- Oct 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (847) 869-8354
- Medicare enrollment
- Enrolled (PECOS I20060426000227); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2500 Ridge Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jeffrey George Geohas 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 036093330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average internal medicine physician in 2024
3,173 Medicare Part D claims for 258 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 38 claims were for opioids.
Most prescribed
- Atorvastatin Calcium278 claims
- Amlodipine Besylate210 claims
- Levothyroxine Sodium148 claims
- Lisinopril134 claims
- Metformin Hcl107 claims
- Losartan Potassium104 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.
Industry payments in 2024: $1,720.46
65 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Jeffrey George Geohas among 7,238 internal medicine physician records in Illinois
Jeffrey George Geohas, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1993 · median 2003 among the 3,580 with a school on file
- Record last updated2011 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
178 internal medicine physician records list a practice address in Evanston
They are 178 of the 4,013 NPPES records with a practice address in Evanston, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Evanston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gary Davis, M.D.Evanston, IL 602011588605745
- Bruce Doblin, MDEvanston, IL 602011417903212
- Steven Fox, MDEvanston, IL 602011821032210
- Richard Gayes, M.D.Evanston, IL 602011942233242
- Mahalakshmi Halasyamani, M.D.Evanston, IL 602011760441679
- Liza Icayan, M.D.Evanston, IL 602011316922529
- Shrimant Mishra, MDEvanston, IL 602011376551150
- Mehul Pema, DOEvanston, IL 602011780621524
Common questions
What is Jeffrey George Geohas, M.D.'s NPI number?
Jeffrey George Geohas, M.D.'s National Provider Identifier (NPI) is 1609846351, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey George Geohas, M.D. located?
The NPPES record lists a practice address at 2500 Ridge Ave, Evanston, IL, 60201. Phone: (847) 869-1192. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey George Geohas, M.D.'s license?
NPPES lists Illinois license number 036093330, 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 Jeffrey George Geohas, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey George Geohas, M.D. had 3,173 Medicare Part D claims for 258 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.