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Bartlomiej Posnik, M.D.

Hematology & Oncology Physician in Bastrop, TX · enumerated 2014 · practices at Phoenix Oncology Lost Pines Pllc.

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

National Provider Identifier

1609286251

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Registry record

Entity type Individual (Type 1)
Name Bartlomiej Posnik
Credential M.D.
Sex Male
Practice address 3107 Highway 71 E, Bastrop, TX, 78602
Phone (512) 308-9024
Fax (512) 308-9074
Enumeration date May 5, 2014
Last updated in NPPES Jun 25, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License S4844 (TX) Secondary
207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License S4844 (TX) Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License S4844 (TX) 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
413328202 Medicaid TX -
413328201 Medicaid TX -

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.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Bartlomiej Posnik?
Bartlomiej Posnik is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-25.