Dr. Jeffrey D. Hershkowitz, DO
- Medicare services, 2024
- 28
- Medicare patients, 2024
- 34
- Part D claims, 2024
- 26,272
- Hospital affiliations
- 5
- Industry payments
- $136,264
- Practice address
- 3333 North Seminary, Galesburg, IL 61401
- Practice phone
- Call (309) 344-3161
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hershkowitz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jeffrey D. Hershkowitz is an internist in Galesburg, Illinois
Dr. Hershkowitz practices at OSF St. Mary Medical Center in Galesburg, Illinois, part of OSF HealthCare System.
Dr. Hershkowitz's NPI, 1922101104, was assigned on September 6, 2006. Dr. Hershkowitz graduated from New York College of Osteo Medicine of New York Institute of Technology in 1988.
- NPI
- 1922101104NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880689462
- NPI enumeration date
- September 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (309) 344-3161
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey D. Hershkowitz practices at OSF St. Mary Medical Center in Galesburg, Illinois
Dr. Hershkowitz's primary practice is OSF St. Mary Medical Center, at 3333 North Seminary, Galesburg, IL 61401 in Knox County. The practice phone is (309) 344-3161.
- OSF St. Mary Medical Center3333 North Seminary, Galesburg, IL 61401 · Knox CountyPhone(309) 344-3161
Source: Dmand AI Affiliation Data
Dr. Jeffrey D. Hershkowitz is affiliated with 13 sites of care and 2 medical groups
Dr. Hershkowitz's primary practice is OSF St. Mary Medical Center in Galesburg, Illinois, part of OSF HealthCare System. Dr. Hershkowitz is also affiliated with OSF Saint Francis Medical Center. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Dr. Hershkowitz to 3 more hospitals, 2 home health agencies, 2 hospices, 1 breast imaging center, 1 group practice or clinic, 1 rural health clinic, 1 skilled nursing facility and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeffrey D. Hershkowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hershkowitz practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF St. Mary Medical Center | Available with a free account |
| +12 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Jeffrey D. Hershkowitz is one of 5,652 internists in Illinois
Internal medicine is Dr. Hershkowitz's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hershkowitz has a license on file in Illinois.
Specialties and state licenses
- Internal medicine, Illinois
Internists near Dr. Hershkowitz
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jeffrey D. Hershkowitz billed Medicare for 28 services in 2024
CMS data shows 28 Medicare services from Dr. Hershkowitz across 2 procedure codes in 2024, for 34 Medicare patients. Medicare paid $1,732 for them.
Dr. Hershkowitz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1892024: 1592%
- Office and hospital visits
- 2023: 2192024: 1394%
- Lab and pathology
- 2023: 532024: 0100%
- Tests and treatments
- 2023: 492024: 0100%
- Other services
- 2023: 182024: 0100%
Where Dr. Hershkowitz's Medicare services took place, 2024
- In an office1554%
- In a facility1346%
Dr. Hershkowitz compared with the Illinois median for internists, 2024
- Dr. Hershkowitz
- Illinois median
- Medicare services
- 28vs 56695% below
- Medicare patients
- 34vs 20884% below
- Part D claims
- 25,361vs 28489.3 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Hershkowitz's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hershkowitz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hershkowitz and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey D. Hershkowitz treated 34 Medicare patients in 2024, average age 76
CMS counts 34 Medicare patients who saw Dr. Hershkowitz in 2024. The largest group is 75 to 84, with 13 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.13, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hershkowitz's median patient age at 74, with 47% women.
Dr. Hershkowitz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hershkowitz's Medicare patients by sex, 2024
- Women1750%
- Men1750%
Chronic conditions among Dr. Hershkowitz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Chronic kidney disease56%
- Atrial fibrillation44%
- Anxiety35%
- COPD35%
- Heart failure35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hershkowitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jeffrey D. Hershkowitz wrote 26,272 Medicare Part D claims in 2024
In 2024, Dr. Hershkowitz wrote 26,272 Medicare Part D claims for 1,329 patients. 84% of them were for generic drugs. CMS names the drug for 25,361 of them, across 266 drugs with 11 or more claims each, at $2,337,683 in total drug cost. In 2023, CMS named 26,456 claims across 270 drugs.
Dr. Hershkowitz's Part D claims by kind of drug, 2024
- Generic22,069 claims84%
- Brand-name4,017 claims15%
- Other186 claims1%
Dr. Hershkowitz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hershkowitz's Part D claims, 2024
- Opioids4%1,047 of 26,272 claims
- Antibiotics2%529 of 26,272 claims
- Antipsychotics, patients 65 and over1%219 of 26,272 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 26,4562024: 25,3614%
Drugs named by CMS: 266 in 2024, 270 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Jeffrey D. Hershkowitz takes part in Medicare
Dr. Hershkowitz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jeffrey D. Hershkowitz received $136,264 in industry payments from 2016 to 2025
CMS Open Payments shows 926 general payments to Dr. Hershkowitz from 39 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 72% of the total. AstraZeneca Pharmaceuticals LP paid the most, $45,853.
General payments to Dr. Hershkowitz by program year, 2016 to 2025
General payments to Dr. Hershkowitz by kind, 2016 to 2025
- Speaker and faculty fees$97,80572%
- Food and beverage$23,70217%
- Travel and lodging$10,7288%
- Consulting fees$3,9603%
- Education$690%
Companies that paid Dr. Hershkowitz the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeffrey D. Hershkowitz graduated from New York College of Osteo Medicine of New York Institute of Technology
Dr. Hershkowitz graduated from New York College of Osteo Medicine of New York Institute of Technology in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey D. Hershkowitz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jeffrey D. Hershkowitz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jeffrey D. Hershkowitz's NPI number?
Dr. Jeffrey D. Hershkowitz's NPI number is 1922101104. It was assigned on September 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey D. Hershkowitz?
Dr. Jeffrey D. Hershkowitz is an internist in Galesburg, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jeffrey D. Hershkowitz practice?
Dr. Hershkowitz practices at 3333 North Seminary, Galesburg, IL 61401. Dr. Hershkowitz's primary practice is OSF St. Mary Medical Center in Galesburg, Illinois, part of OSF HealthCare System. Dmand AI also links Dr. Hershkowitz to 3 hospitals, 2 home health agencies, 2 hospices, 1 breast imaging center, 1 group practice or clinic, 1 rural health clinic, 1 skilled nursing facility and 1 medical group.
What is Dr. Jeffrey D. Hershkowitz's office phone number?
The practice phone on file for Dr. Hershkowitz is (309) 344-3161.
Which hospitals is Dr. Jeffrey D. Hershkowitz affiliated with?
Dr. Hershkowitz practices at OSF St. Mary Medical Center in Galesburg, Illinois. Dr. Hershkowitz is also affiliated with OSF Saint Francis Medical Center. Dmand AI links Dr. Hershkowitz to 3 more hospitals.
What medical group is Dr. Jeffrey D. Hershkowitz part of?
Dr. Hershkowitz is linked to OSF Multi-Specialty Group. Dmand AI links Dr. Hershkowitz to 1 more medical group.
Does Dr. Jeffrey D. Hershkowitz accept Medicare?
Yes. CMS data shows Dr. Hershkowitz billed Medicare for 28 services in 2024, and Dr. Hershkowitz accepts Medicare assignment.
How many Medicare patients does Dr. Jeffrey D. Hershkowitz see?
CMS counts 34 Medicare patients who saw Dr. Hershkowitz in 2024, with an average age of 76.
What services does Dr. Jeffrey D. Hershkowitz bill to Medicare?
In 2024, Dr. Hershkowitz's most billed Medicare services were surgery: heart and blood vessels (36415) and hospital inpatient care (99223).
Where did Dr. Jeffrey D. Hershkowitz go to medical school?
Dr. Hershkowitz graduated from New York College of Osteo Medicine of New York Institute of Technology in 1988.
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What drugs does Dr. Jeffrey D. Hershkowitz prescribe most?
In 2024 Medicare Part D data, Dr. Hershkowitz's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Gabapentin.
Has Dr. Jeffrey D. Hershkowitz received payments from drug or device companies?
CMS Open Payments shows $136,264 in general payments to Dr. Hershkowitz from 39 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Jeffrey D. Hershkowitz been practicing?
Dr. Hershkowitz graduated from medical school in 1988, 38 years ago.
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