NPPES file of Aug 9, 2026

Marcin K. Karcz, M.D., MSC

Critical Care Medicine (Anesthesiology) Physician · Bronxville, NY

Marcin K. Karcz, M.D., MSC is a critical care medicine (anesthesiology) physician with a practice address in Bronxville, New York, and NPI 1144484569, issued on Jul 15, 2008. Check the license (New York 273517, as entered in NPPES) on the NYS Education Department, Office of the Professions; 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
1144484569
Name
Marcin K. Karcz
Credential
M.D., MSC
Primary taxonomy
Critical Care Medicine (Anesthesiology) Physician 207LC0200X
License number
273517 NY
Self-reported in NPPES; status is on the state search
Practice location
55 Palmer Ave, Bronxville, NY 10708
Phone
(585) 764-4099
Enumerated
Jul 15, 2008
Record last updated
Jul 9, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20230807001111); accepts Medicare assignment
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 55 Palmer Ave

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

  1. George Adum-Kwapong, PA-CPhysician Assistant1689447773
  2. Sameer Aggarwal, M.D.Hospitalist Physician1699139972
  3. Valerie Alley, MDEmergency Medicine Physician1336232446
  4. Akua Ampadu, M.D.Internal Medicine Physician1144581570
  5. Chana Arno, PAPhysician Assistant1518735307
  6. Mauricio Ayala, PA-CSurgical Physician Assistant1295667376

Verify Marcin K. Karcz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 273517
    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 New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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9.7 times the Medicare Part D claims of the average critical care medicine (anesthesiology) physician in 2024

1,863 Medicare Part D claims for 404 beneficiaries, against an average of 192 among the 107 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 1,285 claims were for opioids.

  1. Marcin Karcz1,863
  2. Specialty average192

Most prescribed

  1. Hydrocodone-Acetaminophen674 claims
  2. Oxycodone-Acetaminophen293 claims
  3. Cephalexin206 claims
  4. Gabapentin115 claims
  5. Oxycodone Hcl62 claims
  6. Fentanyl58 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): 90.1 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.

  1. Qualityout of 100 · 30% of the final score67.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $14,911.86

191 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 394 providers of this specialty with any payment received $2,001.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marcin Karcz$14,912
  2. Specialty average$2,002

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

  1. Ths Physician Partners IncCharleston, WV

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

Marcin K. Karcz among 112 critical care medicine (anesthesiology) physician records in New York

Marcin K. Karcz, M.D., MSC is one of 112 critical care medicine (anesthesiology) physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 33% of them.

  • NPI issued2008 · 33% of these records are older, 53% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 82% of these records are
  • Graduated2003 · median 2010 among the 92 with a school on file
  • Record last updated2016 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LC0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Critical Care Medicine (Anesthesiology) Physician providers in New York

There are 112 critical care medicine (anesthesiology) physician records in New York.

The 8 critical care medicine (anesthesiology) physician records with the nearest ZIP codes

  1. George Anastasian, M.D.White Plains, NY 106011336260504
  2. Thejas Hiremath, MDValhalla, NY 105951669969291
  3. Joseph Rumley, MBCHB FRCAValhalla, NY 105951538327788
  4. Alicia Sobers, M.D.Valhalla, NY 105951457524092
  5. Sabina Sefovic, MDMount Kisco, NY 105491013536226
  6. Omid AzimaraghiBronx, NY 104671104698331
  7. Jay Berger, M.D./PH.D.Bronx, NY 104671922268200
  8. Mabel Chung, MDBronx, NY 104671104022433

Common questions

What is Marcin K. Karcz, M.D., MSC's NPI number?

Marcin K. Karcz, M.D., MSC's National Provider Identifier (NPI) is 1144484569, issued on Jul 15, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Marcin K. Karcz, M.D., MSC located?

The NPPES record lists a practice address at 55 Palmer Ave, Bronxville, NY, 10708. Phone: (585) 764-4099. Providers update this record themselves, so call before visiting.

How can I verify Marcin K. Karcz, M.D., MSC's license?

NPPES lists New York license number 273517, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Marcin K. Karcz, M.D., MSC prescribe under Medicare Part D?

In 2024, Marcin K. Karcz, M.D., MSC had 1,863 Medicare Part D claims for 404 beneficiaries; the average among critical care medicine (anesthesiology) physician prescribers was 192. Part D covers Medicare prescriptions only.

What is Marcin K. Karcz, M.D., MSC's MIPS final score?

The 2023 MIPS final score is 90.1 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.