Sefer Gezer, M.D.
Hematology (Internal Medicine) Physician · Chicago, IL
Sefer Gezer, M.D. is a hematology (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1700845153, issued on Mar 22, 2006. Check the license (Illinois 036-087768, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sefer Gezer
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 036-087768 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1725 W Harrison St, Chicago, IL 60612
- Phone
- (312) 942-5904
- Enumerated
- Mar 22, 2006
- Record last updated
- Apr 14, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041011000528); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 47 in Illinois → Look up another NPI →
Also registered at 1725 W Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Qurrat-Ul-Ain Abid, MDHospice and Palliative Medicine (Internal Medicine) Physician1053949024
- John Acheson, MDSurgery Physician1205528726
- David Agbunag, PA-CSurgical Physician Assistant1093885188
- Eda Akyar, MDSports Medicine (Family Medicine) Physician1255910006
- Jorelle Alexander, DMD,MPHDentist1972790756
- Amjad Ali, M.D.Specialist1952359184
Verify Sefer Gezer 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 036-087768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average hematology (internal medicine) physician in 2024
676 Medicare Part D claims for 112 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims.
Most prescribed
- Eliquis313 claims
- Xarelto132 claims
- Warfarin Sodium110 claims
- Enoxaparin Sodium51 claims
- Hydroxyurea13 claims
- Anagrelide Hcl12 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
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sefer Gezer among 47 hematology (internal medicine) physician records in Illinois
Sefer Gezer, M.D. is one of 47 hematology (internal medicine) physician records with a practice address in Illinois. 85% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 53% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1971 · median 2003 among the 31 with a school on file
- Record last updated2011 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Illinois
There are 47 hematology (internal medicine) physician records in Illinois.
All 47 in Illinois → Every provider in Chicago → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Irene Dehghan-Paz, MDChicago, IL 606121801053905
- Kunal Desai, MD MBA MSChicago, IL 606121982100012
- Stephanie Gregory, M.D.Chicago, IL 606121356300719
- Deborah Katz, MDChicago, IL 606121396901500
- Hosam Khayal, MDChicago, IL 606121144271206
- Seo-Hyun Kim, M.D.Chicago, IL 606121710253992
- Melissa Larson, M.D.Chicago, IL 606121912967688
- John QuigleyChicago, IL 606121912010323
Common questions
What is Sefer Gezer, M.D.'s NPI number?
Sefer Gezer, M.D.'s National Provider Identifier (NPI) is 1700845153, issued on Mar 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sefer Gezer, M.D. located?
The NPPES record lists a practice address at 1725 W Harrison St, Chicago, IL, 60612. Phone: (312) 942-5904. Providers update this record themselves, so call before visiting.
How can I verify Sefer Gezer, M.D.'s license?
NPPES lists Illinois license number 036-087768, 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 Sefer Gezer, M.D. prescribe under Medicare Part D?
In 2024, Sefer Gezer, M.D. had 676 Medicare Part D claims for 112 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.