DR. SETH LOSIEWICZ MD
NPI 1801591268
Internal Medicine in Lafayette, IN

Q: What is Seth Losiewicz's NPI number?

The NPI number for Seth Losiewicz is 1801591268. It was assigned to this individual provider in the NPPES registry on April 4, 2023.

Q: What is Seth Losiewicz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Seth Losiewicz was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 April 04, 2023PECOS EnrolledAccepts Medicare Assignment

5165 MCCARTY LN, LAFAYETTE, IN 47905(765) 448-8000(765) 838-4758 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 17, 2026, Apr 4, 2023 (2 updates tracked since 2023).

On this page

About Dr. Seth Losiewicz Md NPPES

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

DR. SETH LOSIEWICZ MD (NPI 1801591268) is an individual internal medicine provider in Lafayette, Indiana, licensed in Indiana (01099592A) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with Indiana University Health Arnett Hospital, and maintains a secondary practice location in Lexington.

NPPES Registry Identity

NPI1801591268

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. SETH LOSIEWICZCredential: MD

Location Address5165 MCCARTY LNLafayette, IN 47905-8764

Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959

Phone(765) 448-8000

Fax(765) 838-4758

Sole ProprietorNo

Medical School CMSOtherGraduated 2023

Enumeration DateApril 4, 2023

Last NPPES UpdateAugust 17, 20262 updates tracked since enumeration

NPPES CertifiedAugust 17, 2026

✔ NPI 1801591268 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IN · 01099592A

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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

5165 MCCARTY LN, Lafayette, IN 47905

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Secondary Practice Location 1

Location 1900 S Limestone Ctw 304Lexington, KY 40536-0293 · Phone (859) 323-2834

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Seth Losiewicz 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 ID7517405210

PECOS Enrollment IDI20260630000502

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.

Medicare Billing Reassignment

Medicare enrollment records show Seth Losiewicz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Iu Health Medical Group, LLC

54 mi

General Practice

1701 N SENATE BLVD
Indianapolis, IN 46202

Reassigned Medicare billing, Indiana enrollment
5,212 clinicians in this Medicare group

NPI 1326893777 (317) 962-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Indiana University Health Arnett Hospital

Acute Care Hospitals · Lafayette, IN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150173

Location5165 Mccarty LnLafayette, IN 47905 · Tippecanoe County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 47905 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

$122.49 typical visit price

range $53.07 – $161.76

Typical copayment $30.62 (range $13.26 – $40.44)

Most-billed visit code 99204

Established Patient

$94.22 typical visit price

range $16.93 – $132.22

Typical copayment $23.55 (range $4.23 – $33.05)

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.

DANI'EL N MCKILLIP RN

Registered Nurse (Obstetric, Inpatient)