Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Bartosz Chmielowski, MD, PHD

Hematology & Oncology Physician in Los Angeles, CA · enumerated 2008.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1801067897

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Bartosz Chmielowski

Credential MD, PHD

Sex Male

Practice address 10945 Le Conte Ave, Ucla, Division of Hematology-Oncology, Pvub Suite 2333, Los Angeles, CA, 90095

Phone (310) 829-5471

Fax (310) 829-6192

Enumeration date Mar 18, 2008

Last updated in NPPES Feb 9, 2010

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License A89689 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00A896890	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Bartosz Chmielowski practice?

The practice location on file with NPPES is in Los Angeles, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Bartosz Chmielowski?

The National Provider Identifier (NPI) for Bartosz Chmielowski is 1801067897, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Fairooz Kabbinavar Hematology & Oncology Physician · Los Angeles, CA NPI 1801871819 Adelita Cabagnot Family Nurse Practitioner · Los Angeles, CA NPI 1639250319 Herbert Eradat Internal Medicine Physician · Los Angeles, CA NPI 1922143791 Shinya Ishii Geriatric Medicine (Internal Medicine) Physician · Los Angeles, CA NPI 1164545976 Maristela Garcia Geriatric Medicine (Internal Medicine) Physician · Los Angeles, CA NPI 1881813228 Takahiro Mori Geriatric Medicine (Family Medicine) Physician · Los Angeles, CA NPI 1841404175 Grace Chen Geriatric Medicine (Internal Medicine) Physician · Los Angeles, CA NPI 1770785297 Paul Liu Internal Medicine Physician · Los Angeles, CA NPI 1114111283

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-09.