NPPES file of Aug 9, 2026

Marcin Chwistek, MD

Medical Oncology Physician · Philadelphia, PA

Marcin Chwistek, MD is a medical oncology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1548366321, issued on Sep 16, 2006. Check the license (Pennsylvania MD427002, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548366321
Name
Marcin Chwistek
Credential
MD
Primary taxonomy
Medical Oncology Physician 207RX0202X
License numbers
MD427002 PA
MD 927002 PA
Self-reported in NPPES; status is on the state search
Practice location
333 Cottman Ave, Philadelphia, PA 19111
Phone
(215) 728-6900
Enumerated
Sep 16, 2006
Record last updated
Apr 9, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(215) 728-2887
Medicaid ID
1013749010002 PA
Medicare enrollment
Enrolled (PECOS I20050824000228); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 333 Cottman Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Philip Abbosh, MDPHDUrology Physician1871749424
  2. Andrea AbbottDiagnostic Radiology Physician1316268444
  3. Jesty Abraham, DODiagnostic Radiology Physician1417118373
  4. Allison Aggon, D.O.Surgery Physician1972759900
  5. Tahseen Al-Saleem, M.D.Anatomic Pathology & Clinical Pathology Physician1962474056
  6. Md Usman Ali, M.D.Internal Medicine Physician1619316882

Verify Marcin Chwistek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD427002
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Pennsylvania license search

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3.1 times the Medicare Part D claims of the average medical oncology physician in 2024

2,178 Medicare Part D claims for 189 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 1,339 claims were for opioids.

  1. Marcin Chwistek2,178
  2. Specialty average703

Most prescribed

  1. Oxycodone Hcl595 claims
  2. Pregabalin146 claims
  3. Methadone Hcl131 claims
  4. Buprenorphine121 claims
  5. Gabapentin119 claims
  6. Morphine Sulfate Er101 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 practice group's MIPS final score for 2023 (Medicare payment program): 76.7 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score55.2
  2. Costout of 100 · 30%54.9
  3. Promoting interoperabilityout of 100 · 25%98.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Temple Faculty Practice Plan IncPhiladelphia, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Medical Oncology Physician providers in Pennsylvania

There are 265 medical oncology physician records in Pennsylvania.

Other medical oncology physician records in Pennsylvania

  1. Maysa Abu-Khalaf, MDPhiladelphia, PA1194713495
  2. Abdul Adjei, MDWilkes Barre, PA1639351760
  3. Nicole Agostino, DOQuakertown, PA1063565042
  4. Sramila Aithal, MDBensalem, PA1205029816
  5. Heidar Albandar, MDFountain Hill, PA1659766889
  6. Seyfettin Alpdogan, MDPhiladelphia, PA1558538991
  7. Ravi Amaravadi, MDPhiladelphia, PA1043252455
  8. Fern Anari, M.D.Philadelphia, PA1922340090
  9. Charalambos Andreadis, MDPhiladelphia, PA1205877669
  10. Muhammad Arif, M.D.Wilkes Barre, PA1154393510

Common questions

What is Marcin Chwistek, MD's NPI number?

Marcin Chwistek, MD's National Provider Identifier (NPI) is 1548366321, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Marcin Chwistek, MD located?

The NPPES record lists a practice address at 333 Cottman Ave, Philadelphia, PA, 19111. Phone: (215) 728-6900. Providers update this record themselves, so call before visiting.

How can I verify Marcin Chwistek, MD's license?

NPPES lists Pennsylvania license number MD427002, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marcin Chwistek, MD prescribe under Medicare Part D?

In 2024, Marcin Chwistek, MD had 2,178 Medicare Part D claims for 189 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.

What is Marcin Chwistek, MD's MIPS final score?

The 2023 MIPS final score is 76.7 of 100, reported for the practice group. 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.