Bartlomiej Posnik, M.D.

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

S4844 Issued in TX

Practice address

3107 Highway 71 E
Bastrop, TX 78602-5158

Phone

(512) 308-9024

Fax

(512) 308-9074

NPI assigned

May 5, 2014

Last updated

Jun 25, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in TX

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Hematology/OncologyAlso: Internal Medicine, Medical Oncology

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Texas Oncology PAGroup PAC ID 5395658934, 1,001 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St David's South Austin Medical Center Hospital, Austin, TX, CCN 450713
• Ascension Seton Hays Hospital, Kyle, TX, CCN 670056
• Columbus Community Hospital Hospital, Columbus, TX, CCN 450370
• Ascension Seton Smithville Hospital, Smithville, TX, CCN 671304
• Ascension Seton Medical Center Austin Hospital, Austin, TX, CCN 450056

Merit-based Incentive Payment System (MIPS)

Final score

85.12 of 100Reported as apm

Quality

67.48

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: bartlomiej.posnik@txo.ikm.direct-ci.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Texas Oncology PA

  • Medical Oncology Physician
  • El Paso, TX
  • NPI 1811944101

  Hematology & Oncology

  Medicare reassignment Care Compare group NPD
• Texas Oncology PA

  • Medical Oncology Physician
  • Pearland, TX
  • NPI 1912174350

  Hematology & Oncology

  NPD
• Texas Oncology PA

  • Medical Oncology Physician
  • Austin, TX
  • NPI 1972770303

  Hematology & Oncology

  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Ascension Seton

  dba Ascension Seton Medical Center Austin

  • General Acute Care Hospital
  • Austin, TX
  • NPI 1164526786
  Care Compare affiliation
• Ascension Seton

  dba Ascension Seton Hays

  • General Acute Care Hospital
  • Kyle, TX
  • NPI 1619115383
  Care Compare affiliation
• Ascension Seton

  dba Ascension Seton Smithville

  • Critical Access Hospital
  • Smithville, TX
  • NPI 1619726064
  Care Compare affiliation
• Columbus Community Hospital

  • Rural Acute Care Hospital
  • Columbus, TX
  • NPI 1740238641
  Care Compare affiliation
• St. David's Healthcare Partnership, L.P., LLP

  dba St. David's South Austin Medical Center

  • General Acute Care Hospital
  • Austin, TX
  • NPI 1679528889
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1399248000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750809600000",
    "number": "1609286251",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 911230",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "753911230",
            "telephone_number": "972-997-8000",
            "fax_number": "972-234-2987"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3107 HIGHWAY 71 E",
            "city": "BASTROP",
            "state": "TX",
            "postal_code": "786025158",
            "telephone_number": "512-308-9024",
            "fax_number": "512-308-9074"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "POSNIK",
        "first_name": "BARTLOMIEJ",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-05-05",
        "last_updated": "2025-06-25",
        "certification_date": "2025-06-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "S4844",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "TX",
            "license": "S4844",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "TX",
            "license": "S4844",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "413328202",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "413328201",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Pollock, MD
• Victoria Pomajevich, PA-C
• Pompeyo C. Chavez, M.D., PLLC (Pompeyo Chavez, M.D.)
• Brent A Porter, MD
• Rachel Porter, RD
• Allison Ross Pottorf
• Adam Powers, DPT
• Proactive Happy Health PLLC
• Danielle Marie Provencio, CPHT
• Madisyn Puangco, PA-C

• Hematology & Oncology Physician in Bastrop, TX
• Providers in Bastrop, TX by specialty
• Hematology & Oncology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 25, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.