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DR. STEFAN P TARNAWSKY MD PHD
NPI 1023679859
Internal Medicine - Medical Oncology in Saint Louis, MO

Active since June 24, 2019PECOS EnrolledAccepts Medicare Assignment
1 BARNES JEWISH HOSPITAL PLZ, DIV IM MEDICAL ONCOLOGY, SAINT LOUIS, MO 63110(314) 747-1171(314) 454-5902 Get Directions Write a Review

NPPES record last updated: August 6, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 6, 2025, Jun 19, 2021 (2 updates tracked since 2021).

About Dr. Stefan P Tarnawsky Md Phd NPPES

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

DR. STEFAN P TARNAWSKY MD PHD (NPI 1023679859) is an individual medical oncology provider in Saint Louis, Missouri, licensed in Missouri (2021006235) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Indiana University School Of Medicine (2019).

NPPES Registry Identity

NPI1023679859
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. STEFAN P TARNAWSKYCredential: MD PHD
Location Address1 BARNES JEWISH HOSPITAL PLZ, DIV IM MEDICAL ONCOLOGYSaint Louis, MO 63110-1003
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 747-1171 · Fax (314) 454-5902
Phone(314) 747-1171
Fax(314) 454-5902
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 2019
Enumeration DateJune 24, 2019
Last NPPES UpdateAugust 6, 20252 updates tracked since enumeration
NPPES CertifiedJune 19, 2021
✔ NPI 1023679859 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MO · 2021006235
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License 2021006235 (MO)
1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO 63110
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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

Dr. Stefan P Tarnawsky Md Phd 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 ID648506857
PECOS Enrollment IDI20250920000227
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

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

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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
$169.38 typical visit price
range $55.65 – $169.38
Typical copayment $42.34 (range $13.91 – $42.34)
Most-billed visit code 99205
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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.

DR. MARGARET LEIGHTON MCNAIRY MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
ANNA RABINOV ANNA RABINOV
Obstetrics & Gynecology
1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110
St. Louis City (314) 747-3000
MRS. MICHELLE MARIE BLOOM ACNP
Nurse Practitioner (Acute Care)
1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (800) 862-9980
DR. FARIS ADAM BAKEER MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. REHAN RAIS MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. RANDY OLIVIER LAINE MD
Hospitalist
1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110
St. Louis City (314) 362-1700
DR. BRADLEY SETH KUSHNER MD
Surgery
1 BARNES JEWISH HOSPITAL PLZ, DIV SURG VASCULAR
SAINT LOUIS, MO 63110
St. Louis City (314) 273-7373
MS. KELSEY ELISE FOGUS CRNA
Nurse Anesthetist, Certified Registered
1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (800) 862-9980

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 Stefan Tarnawsky's NPI number?

The NPI number for Stefan Tarnawsky is 1023679859. It was assigned to this individual provider in the NPPES registry on June 24, 2019.

Where is Stefan Tarnawsky located?

Stefan Tarnawsky practices at 1 Barnes Jewish Hospital Plz Div Im Medical Oncology, Saint Louis, MO 63110. The listed phone number is (314) 747-1171.

What is Stefan Tarnawsky's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Stefan Tarnawsky enrolled in Medicare?

Yes. Stefan Tarnawsky 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 Stefan Tarnawsky affiliated with any hospitals?

According to CMS data, Stefan Tarnawsky is affiliated with Barnes Jewish Hospital.

When was this NPI record last updated?

The NPPES record for Stefan Tarnawsky was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.