Bartlomiej Posnik, M.D.
Hematology & Oncology Physician · Bastrop, TX
Bartlomiej Posnik, M.D. is a hematology & oncology physician with a practice address in Bastrop, Texas, and NPI 1609286251, issued on May 5, 2014. Check the license (Texas S4844, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Bartlomiej Posnik
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- S4844 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3107 Highway 71 E, Bastrop, TX 78602
- Phone
- (512) 308-9024
- Enumerated
- May 5, 2014
- Record last updated
- Jun 25, 2025
- Fax
- (512) 308-9074
- Medicaid IDs
- 413328202 TX
413328201 TX - Medicare enrollment
- Enrolled (PECOS I20200616000545); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 3107 Highway 71 E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Cervantes, RN, FNP-CFamily Nurse Practitioner1255884532
- Sydney Dunn-ValadezHematology & Oncology Physician1942760863
- Mathew Meeneghan, M.D.Hematology & Oncology Physician1467695460
Verify Bartlomiej Posnik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S4844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,429 Medicare Part D claims for 249 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims. 135 claims were for opioids.
Most prescribed
- Anastrozole258 claims
- Eliquis116 claims
- Hydroxyurea80 claims
- Hydrocodone-Acetaminophen51 claims
- Exemestane48 claims
- Xarelto48 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 89.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,749.97
83 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Texas Oncology PABastrop, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bartlomiej Posnik among 922 hematology & oncology physician records in Texas
Bartlomiej Posnik, M.D. is one of 922 hematology & oncology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 76% of them.
- NPI issued2014 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2014 · median 2004 among the 691 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 hematology & oncology physician records list a practice address in Bastrop
They are 4 of the 378 NPPES records with a practice address in Bastrop, and 922 hematology & oncology physician records in Texas.
All 922 in Texas → Every provider in Bastrop → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Sydney Dunn-ValadezBastrop, TX 786021942760863
- David George, M.D.Bastrop, TX 786021164465563
- Mathew Meeneghan, M.D.Bastrop, TX 786021467695460
- Daniel Farray-Berges, M.D.Weslaco, TX 785961639116288
- Habib Ghaddar, M.D.Weslaco, TX 785961043259476
- Seyed Abedi, M.D.,PH.D.Cedar Park, TX 786131033567409
- Ashleigh PorterCedar Park, TX 786131326435371
- Andrew Shaw, M.D.Cedar Park, TX 786131558686915
Common questions
What is Bartlomiej Posnik, M.D.'s NPI number?
Bartlomiej Posnik, M.D.'s National Provider Identifier (NPI) is 1609286251, issued on May 5, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Bartlomiej Posnik, M.D. located?
The NPPES record lists a practice address at 3107 Highway 71 E, Bastrop, TX, 78602. Phone: (512) 308-9024. Providers update this record themselves, so call before visiting.
How can I verify Bartlomiej Posnik, M.D.'s license?
NPPES lists Texas license number S4844, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Bartlomiej Posnik, M.D. prescribe under Medicare Part D?
In 2024, Bartlomiej Posnik, M.D. had 1,429 Medicare Part D claims for 249 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Bartlomiej Posnik, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.