Jack Fitzsimons, MD
NPI 1558948273 · Hematology & Oncology Physician · Springfield, IL
Enrolled with Medicare as Order and Referring Only - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Fitzsimons, MD is a Hematology & Oncology Physician provider in Springfield, IL (NPI 1558948273).
Provider details
- NPI number
- 1558948273
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036.170810 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$189 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-27
- Last updated
- 2025-12-19
- Certified
- 2025-12-19
Frequently asked questions
- What is Jack Fitzsimons's NPI number?
- Jack Fitzsimons's National Provider Identifier (NPI) is 1558948273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Fitzsimons's specialty?
- Jack Fitzsimons is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Fitzsimons located?
- Jack Fitzsimons's practice location on file with NPPES is 315 W Carpenter St, Springfield, IL 62702-4901.
- What is Jack Fitzsimons's phone number?
- The practice phone number listed in the NPPES registry for Jack Fitzsimons is (217) 545-8000.
- Does Jack Fitzsimons accept Medicare?
- Jack Fitzsimons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Fitzsimons's NPI active?
- Yes — Jack Fitzsimons's NPI (1558948273) is active in the NPPES registry as of the last update on 2025-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.