JACK WESTON FITZSIMONS MD
NPI 1558948273
Internal Medicine - Hematology & Oncology in Springfield, IL

Q: What is Jack Fitzsimons's NPI number?

The NPI number for Jack Fitzsimons is 1558948273. It was assigned to this individual provider in the NPPES registry on March 27, 2021.

Q: What is Jack Fitzsimons's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Jack Fitzsimons was last updated on December 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 27, 2021PECOS EnrolledAccepts Medicare Assignment

315 W CARPENTER ST, SPRINGFIELD, IL 62702(217) 545-8000 Get Directions Write a Review

NPPES record last updated: December 19, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Dec 19, 2025, Jul 1, 2024, Jun 3, 2021 and 1 more (4 updates tracked since 2021).

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About Jack Weston Fitzsimons Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JACK WESTON FITZSIMONS MD (NPI 1558948273) is an individual hematology & oncology provider in Springfield, Illinois, licensed in Illinois (036.170810) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, is affiliated with St Johns Hospital, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1558948273

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameJACK WESTON FITZSIMONSCredential: MD

Location Address315 W CARPENTER STSpringfield, IL 62702-4901

Mailing Address315 W Carpenter StSpringfield, IL 62702-4901 · (217) 545-8000 · Fax (217) 545-1141

Phone(217) 545-8000

Sole ProprietorNo

Medical School CMSOtherGraduated 2021

Enumeration DateMarch 27, 2021

Last NPPES UpdateDecember 19, 20254 updates tracked since enumeration

NPPES CertifiedDecember 19, 2025

✔ NPI 1558948273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in IL · 036.170810

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License 125.078448 (IL)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

315 W CARPENTER ST, Springfield, IL 62702

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jack Weston Fitzsimons Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113325135

PECOS Enrollment IDI20260407002918

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Johns Hospital

Acute Care Hospitals · Springfield, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140053

Location800 E Carpenter StSpringfield, IL 62769 · Sangamon County

Emergency services Birthing friendly

Memorial Medical Center

Acute Care Hospitals · Springfield, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140148

Location701 N First StSpringfield, IL 62702 · Sangamon County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62702 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$168.44 typical visit price

range $54.80 – $168.44

Typical copayment $42.11 (range $13.70 – $42.11)

Most-billed visit code 99205

Established Patient

$97.25 typical visit price

range $17.16 – $136.56

Typical copayment $24.31 (range $4.29 – $34.14)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ASHLEY RACHEL MOHAN DO

Internal Medicine (Hematology & Oncology)

315 W CARPENTER ST
SPRINGFIELD, IL 62702

Sangamon County (217) 545-8000

IMRAN HASSAN M.D.

Colon & Rectal Surgery

315 W CARPENTER ST, 2 ND FLOOR
SPRINGFIELD, IL 62702

Sangamon County (217) 545-1025

DR. HAYDEN ELISE ROTRAMEL MD

Internal Medicine (Gastroenterology)

315 W CARPENTER ST
SPRINGFIELD, IL 62702

Sangamon County (217) 545-8000

MUAATAZ AZZAWI

Internal Medicine (Gastroenterology)

315 W CARPENTER ST
SPRINGFIELD, IL 62702

Sangamon County (217) 545-8000

THERESA M BOLEY CFNP

Nurse Practitioner (Family)

315 W CARPENTER ST, 2ND FLOOR
SPRINGFIELD, IL 62702

Sangamon County (217) 545-7422

STEPHEN R HAZELRIGG M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery)

315 W CARPENTER ST, 2ND FLOOR
SPRINGFIELD, IL 62702

Sangamon County (217) 545-7422

KYUNGSUK JUNG MD MPH

Internal Medicine (Hematology & Oncology)

315 W CARPENTER ST, CLINIC B
SPRINGFIELD, IL 62702

Sangamon County (217) 545-8000

SARAH STETTNER

Internal Medicine (Hematology & Oncology)

315 W CARPENTER ST
SPRINGFIELD, IL 62702

Sangamon County (217) 545-8000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jack Fitzsimons's NPI number?

The NPI number for Jack Fitzsimons is 1558948273. It was assigned to this individual provider in the NPPES registry on March 27, 2021.

Where is Jack Fitzsimons located?

Jack Fitzsimons practices at 315 W Carpenter St, Springfield, IL 62702. The listed phone number is (217) 545-8000.

What is Jack Fitzsimons's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Jack Fitzsimons enrolled in Medicare?

Yes. Jack Fitzsimons is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Jack Fitzsimons affiliated with any hospitals?

According to CMS data, Jack Fitzsimons is affiliated with St Johns Hospital and Memorial Medical Center.

When was this NPI record last updated?

The NPPES record for Jack Fitzsimons was last updated on December 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.