Dr. Jacob Samuel Witt, MD
- Medicare services, 2024
- 9,785
- Medicare patients, 2024
- 256
- Part D claims, 2024
- 372
- Hospital affiliations
- 5
- Industry payments
- $10,072
- Practice address
- 1 St Elizabeth Blvd, O'Fallon, IL 62269
- Practice phone
- Call (217) 492-9651
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
HSHS St. Elizabeth's Hospital
O'Fallon, Illinois
Find Dr. Witt'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. Jacob Samuel Witt is a radiation oncologist in O'Fallon, Illinois
Dr. Witt practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois.
Dr. Witt's NPI, 1891157871, was assigned on March 28, 2016. Dr. Witt holds Wisconsin license 6392-851.
- NPI
- 1891157871NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749551505
- NPI enumeration date
- March 28, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (217) 492-9651
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jacob Samuel Witt practices at HSHS St. Elizabeth's Hospital in O'Fallon, Illinois
Dr. Witt's primary practice is HSHS St. Elizabeth's Hospital, at 1 St Elizabeth Blvd, O'Fallon, IL 62269 in Saint Clair County. The practice phone is (217) 492-9651.
- HSHS St. Elizabeth's Hospital1 St Elizabeth Blvd, O'Fallon, IL 62269 · Saint Clair CountyPhone(217) 492-9651
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jacob Samuel Witt is affiliated with 7 sites of care and 2 medical groups
Dr. Witt's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dr. Witt is also affiliated with HSHS St. Elizabeth's Hospital. The medical group on file is Mercyhealth. Dmand AI also links Dr. Witt to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jacob Samuel Witt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Witt practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HSHS St. Elizabeth's Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jacob Samuel Witt is one of 243 radiation oncologists in Illinois
Radiation oncology is Dr. Witt's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Witt is licensed in Wisconsin.
Specialties and state licenses
- Radiation oncology, WisconsinPrimary
Radiation oncologists near Dr. Witt
Counts of radiation oncologists 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. Jacob Samuel Witt billed Medicare for 9,785 services in 2024
CMS data shows 9,785 Medicare services from Dr. Witt across 28 procedure codes in 2024, for 256 Medicare patients. Medicare paid $273,857 for them. Every service was in an office.
Dr. Witt's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 3,7172024: 6,79783%
- Imaging
- 2023: 1,2712024: 2,50197%
- Office and hospital visits
- 2023: 1962024: 430119%
- Surgery
- 2023: 202024: 2945%
- Lab and pathology
- 2023: 242024: 2817%
Dr. Witt compared with the Illinois median for radiation oncologists, 2024
- Dr. Witt
- Illinois median
- Medicare services
- 9,785vs 1,4596.7 times
- Medicare patients
- 256vs 17645% above
- Part D claims
- 271vs 348.0 times
Medians across 231 radiation oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Witt'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Witt and other radiation oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jacob Samuel Witt treated 256 Medicare patients in 2024, average age 75
CMS counts 256 Medicare patients who saw Dr. Witt in 2024. The largest group is 65 to 74, with 117 patients. 75% of them have cancer, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.99, 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. Witt's median patient age at 74, with 54% women.
Dr. Witt's Medicare patients by age, 2024
Dr. Witt's Medicare patients by sex, 2024
- Women12348%
- Men13352%
Chronic conditions among Dr. Witt's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease39%
- Diabetes36%
- Chronic kidney disease34%
- COPD33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Witt'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
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jacob Samuel Witt wrote 372 Medicare Part D claims in 2024
In 2024, Dr. Witt wrote 372 Medicare Part D claims for 118 patients. 97% of them were for generic drugs. CMS names the drug for 271 of them, across 10 drugs with 11 or more claims each, at $2,563 in total drug cost. In 2023, CMS named 90 claims across 4 drugs.
Dr. Witt's Part D claims by kind of drug, 2024
- Generic360 claims97%
- Brand-name12 claims3%
Dr. Witt'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. Witt's Part D claims, 2024
- Opioids16%58 of 372 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: 902024: 271201%
Drugs named by CMS: 10 in 2024, 4 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
Dr. Jacob Samuel Witt offers telehealth to Medicare patients
Dr. Witt accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Witt as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jacob Samuel Witt received $10,072 in industry payments from 2019 to 2025
CMS Open Payments shows 465 general payments to Dr. Witt from 64 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $1,201.
General payments to Dr. Witt by program year, 2019 to 2025
Companies that paid Dr. Witt the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jacob Samuel Witt'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Jacob Samuel Witt
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. Jacob Samuel Witt's NPI number?
Dr. Jacob Samuel Witt's NPI number is 1891157871. It was assigned on March 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Jacob Samuel Witt?
Dr. Jacob Samuel Witt is a radiation oncologist in O'Fallon, Illinois. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Jacob Samuel Witt practice?
Dr. Witt practices at 1 St Elizabeth Blvd, O'Fallon, IL 62269. Dr. Witt's primary practice is HSHS St. Elizabeth's Hospital in O'Fallon, Illinois. Dmand AI also links Dr. Witt to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Jacob Samuel Witt's office phone number?
The practice phone on file for Dr. Witt is (217) 492-9651.
What is Dr. Jacob Samuel Witt's medical license number?
Dr. Witt holds Wisconsin license 6392-851.
Which hospitals is Dr. Jacob Samuel Witt affiliated with?
Dr. Witt is affiliated with HSHS St. Elizabeth's Hospital. Dmand AI links Dr. Witt to 4 more hospitals.
What medical group is Dr. Jacob Samuel Witt part of?
Dr. Witt is linked to Mercyhealth. Dmand AI links Dr. Witt to 1 more medical group.
Does Dr. Jacob Samuel Witt accept Medicare?
Yes. CMS data shows Dr. Witt billed Medicare for 9,785 services in 2024, and Dr. Witt accepts Medicare assignment.
Does Dr. Jacob Samuel Witt offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Witt as offering telehealth services.
How many Medicare patients does Dr. Jacob Samuel Witt see?
CMS counts 256 Medicare patients who saw Dr. Witt in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Jacob Samuel Witt bill to Medicare?
In 2024, Dr. Witt's most billed Medicare services were medicare temporary code (Q9967), radiation oncology (77014) and radiation oncology (77300).
What drugs does Dr. Jacob Samuel Witt prescribe most?
In 2024 Medicare Part D data, Dr. Witt's most prescribed drugs by claims were Tamsulosin HCl, Lidocaine HCl Viscous and Dexamethasone.
Has Dr. Jacob Samuel Witt received payments from drug or device companies?
CMS Open Payments shows $10,072 in general payments to Dr. Witt from 64 companies from 2019 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Jacob Samuel Witt been practicing?
Dr. Witt graduated from medical school in 2016, 10 years ago.
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