Bruce Gershenhorn, DO
Hematology & Oncology Physician · McHenry, IL
Bruce Gershenhorn, DO is a hematology & oncology physician with a practice address in McHenry, Illinois, and NPI 1588796478, issued on Mar 9, 2007. Check the license (Illinois 036127065, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Bruce Gershenhorn
- Credential
- DO
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 036127065 IL
231510 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4305 W Medical Center Dr Ste 1, McHenry, IL 60050
- Phone
- (815) 759-8100
- Enumerated
- Mar 9, 2007
- Record last updated
- Apr 23, 2026
- Fax
- (815) 759-8106
- Medicare enrollment
- Enrolled (PECOS I20110428000406); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 4305 W Medical Center Dr Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathryn Barney, FNP-BCNurse Practitioner1578092441
- Cherie Fiedler, APRN, FNP-BCNurse Practitioner1730822263
- Andrea Good, NURSE PRACTITIONERNurse Practitioner1154899094
- Beverly Jakic, APRN, CNPNurse Practitioner1659181568
- Victor Medina, D.O.Hematology & Oncology Physician1720492572
- Paul Oneill, M.D.Hematology & Oncology Physician1548262611
Verify Bruce Gershenhorn 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 036127065Check 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% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
564 Medicare Part D claims for 127 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims. 18 claims were for opioids.
Most prescribed
- Eliquis95 claims
- Prochlorperazine Maleate42 claims
- Xarelto35 claims
- Calquence28 claims
- Prednisone23 claims
- Sulfamethoxazole-Trimethoprim15 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: $164.25
3 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,560 providers of this specialty with any payment received $7,481.41 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 one group practice
- Advocate Health And Hospitals CorporationAurora, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bruce Gershenhorn among 666 hematology & oncology physician records in Illinois
Bruce Gershenhorn, DO is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% 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 43% of them.
- NPI issued2007 · 43% of these records are older, 48% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2001 · median 2003 among the 461 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Illinois
There are 666 hematology & oncology physician records in Illinois.
All 666 in Illinois → Every provider in McHenry → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Nida Hussain, M.D.McHenry, IL 600501134562150
- Michal Kubiak, M.D.McHenry, IL 600501144776360
- Victor Medina, D.O.McHenry, IL 600501720492572
- Paul Oneill, M.D.McHenry, IL 600501548262611
- Mir Ali, MDLibertyville, IL 600481518237585
- Michael Breen, MD, PHDLibertyville, IL 600481669861449
- Aalisha DesaiLibertyville, IL 600481962816108
- Kevin Prescott, MDLibertyville, IL 600481144713348
Common questions
What is Bruce Gershenhorn, DO's NPI number?
Bruce Gershenhorn, DO's National Provider Identifier (NPI) is 1588796478, issued on Mar 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bruce Gershenhorn, DO located?
The NPPES record lists a practice address at 4305 W Medical Center Dr Ste 1, McHenry, IL, 60050. Phone: (815) 759-8100. Providers update this record themselves, so call before visiting.
How can I verify Bruce Gershenhorn, DO's license?
NPPES lists Illinois license number 036127065, 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 Bruce Gershenhorn, DO prescribe under Medicare Part D?
In 2024, Bruce Gershenhorn, DO had 564 Medicare Part D claims for 127 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.