Dr. Jack Weston Fitzsimons, MD
- Part D claims, 2024
- 87
- Hospital affiliations
- 3
- Industry payments
- $236
- Medical group
- 1
- State license
- 1
- Practice address
- 701 N First St, Springfield, IL 62702
- Practice phone
- Call (217) 788-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Fitzsimons' 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. Jack Weston Fitzsimons is a hematologist and oncologist in Springfield, Illinois
Dr. Fitzsimons practices at Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System.
Dr. Fitzsimons' NPI, 1558948273, was assigned on March 27, 2021. Dr. Fitzsimons holds Illinois license 036.170810.
- NPI
- 1558948273NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113325135
- NPI enumeration date
- March 27, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (217) 788-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jack Weston Fitzsimons practices at Springfield Memorial Hospital in Springfield, Illinois
Dr. Fitzsimons' primary practice is Springfield Memorial Hospital, at 701 N First St, Springfield, IL 62702 in Sangamon County. The practice phone is (217) 788-3000.
- Springfield Memorial Hospital701 N First St, Springfield, IL 62702 · Sangamon CountyPhone(217) 788-3000
Source: Dmand AI Affiliation Data
Dr. Jack Weston Fitzsimons is affiliated with 4 sites of care and 1 medical group
Dr. Fitzsimons' primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. Dr. Fitzsimons is also affiliated with HSHS St. John's Hospital. The medical group on file is Vituity (formerly CEP America). Dmand AI also links Dr. Fitzsimons to 1 more hospital and 1 group practice or clinic, 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. Jack Weston Fitzsimons' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fitzsimons practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Springfield Memorial Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Memorial Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jack Weston Fitzsimons is one of 563 hematologists and oncologists in Illinois
Hematology and oncology is Dr. Fitzsimons' primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Fitzsimons is licensed in Illinois.
Specialties and state licenses
- Hematology and oncology, IllinoisPrimary
Hematologists and oncologists near Dr. Fitzsimons
Counts of hematologists and 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. Jack Weston Fitzsimons' patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Fitzsimons' median patient age at 68, with 44% women.
Dr. Fitzsimons' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. Jack Weston Fitzsimons wrote 87 Medicare Part D claims in 2024
In 2024, Dr. Fitzsimons wrote 87 Medicare Part D claims for 25 patients. 89% of them were for generic drugs.
Dr. Fitzsimons' Part D claims by kind of drug, 2024
- Generic77 claims89%
- Brand-name and other10 claims11%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Jack Weston Fitzsimons takes part in Medicare
Dr. Fitzsimons 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. Jack Weston Fitzsimons received $236 in industry payments from 2024 to 2025
CMS Open Payments shows 4 general payments to Dr. Fitzsimons from 3 drug and device companies from 2024 to 2025. Education make up the largest share, 80% of the total. Astellas Pharma US Inc paid the most, $189.
General payments to Dr. Fitzsimons by program year, 2024 to 2025
General payments to Dr. Fitzsimons by kind, 2024 to 2025
- Education$18980%
- Food and beverage$4720%
Companies that paid Dr. Fitzsimons the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jack Weston Fitzsimons'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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. Jack Weston Fitzsimons
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. Jack Weston Fitzsimons' NPI number?
Dr. Jack Weston Fitzsimons' NPI number is 1558948273. It was assigned on March 27, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Jack Weston Fitzsimons?
Dr. Jack Weston Fitzsimons is a hematologist and oncologist in Springfield, Illinois. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Jack Weston Fitzsimons practice?
Dr. Fitzsimons practices at 701 N First St, Springfield, IL 62702. Dr. Fitzsimons' primary practice is Springfield Memorial Hospital in Springfield, Illinois, part of Memorial Health System. Dmand AI also links Dr. Fitzsimons to 1 hospital and 1 group practice or clinic.
What is Dr. Jack Weston Fitzsimons' office phone number?
The practice phone on file for Dr. Fitzsimons is (217) 788-3000.
What is Dr. Jack Weston Fitzsimons' medical license number?
Dr. Fitzsimons holds Illinois license 036.170810.
Which hospitals is Dr. Jack Weston Fitzsimons affiliated with?
Dr. Fitzsimons practices at Springfield Memorial Hospital in Springfield, Illinois. Dr. Fitzsimons is also affiliated with HSHS St. John's Hospital. Dmand AI links Dr. Fitzsimons to 1 more hospital.
What medical group is Dr. Jack Weston Fitzsimons part of?
Dr. Fitzsimons is linked to Vituity (formerly CEP America).
Does Dr. Jack Weston Fitzsimons accept Medicare?
Yes. CMS lists Dr. Fitzsimons as accepting Medicare assignment.
Has Dr. Jack Weston Fitzsimons received payments from drug or device companies?
CMS Open Payments shows $236 in general payments to Dr. Fitzsimons from 3 companies from 2024 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Jack Weston Fitzsimons been practicing?
Dr. Fitzsimons graduated from medical school in 2021, 5 years ago.
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