NPPES file of Aug 9, 2026

Maciej Piotr Walczyszyn, M.D.

Critical Care Medicine (Internal Medicine) Physician · Matthews, NC

Maciej Piotr Walczyszyn, M.D. is a critical care medicine (internal medicine) physician with a practice address in Matthews, North Carolina, and NPI 1295977858, issued on Mar 29, 2009. Check the license (North Carolina 2021-01907, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1295977858
Name
Maciej Piotr Walczyszyn
Credential
M.D.
Primary taxonomy
Critical Care Medicine (Internal Medicine) Physician 207RC0200X
License numbers
2021-01907 NC
271108 NY
Self-reported in NPPES; status is on the state search
Practice location
1450 Matthews Township Pkwy Ste 380, Matthews, NC 28105
Phone
(704) 384-9200
Enumerated
Mar 29, 2009
Record last updated
Sep 5, 2023
Fax
(704) 384-6588
Medicare enrollment
Enrolled (PECOS I20210727002156); 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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8 nearest critical care medicine (internal medicine) physician records → All 172 in North Carolina → Look up another NPI →

Also registered at 1450 Matthews Township Pkwy Ste 380

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

  1. Souheil Abdel NourCritical Care Medicine (Internal Medicine) Physician1255511028
  2. Amit Asija, M.D.Pulmonary Disease Physician1699907790
  3. Valerie Calkin, AGACNPNurse Practitioner1598190894
  4. Erika Caserta, P.A.C.Physician Assistant1558411348
  5. Jason Cossey, PAPhysician Assistant1497849939
  6. Heather Fowler, FNP-CNurse Practitioner1417455718

Verify Maciej Piotr Walczyszyn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNorth Carolina Medical Board
    Search for license 2021-01907    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 North Carolina 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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2.1 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024

1,489 Medicare Part D claims for 298 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 63% of claims.

  1. Maciej Walczyszyn1,489
  2. Specialty average696

Most prescribed

  1. Trelegy Ellipta384 claims
  2. Anoro Ellipta134 claims
  3. Montelukast Sodium110 claims
  4. Azithromycin102 claims
  5. Albuterol Sulfate Hfa93 claims
  6. Stiolto Respimat80 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.

Industry payments in 2024: $330.41

5 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Maciej Walczyszyn$330.41
  2. Specialty average$2,958.68

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. Novant Health Medical Group, LLCCharlotte, NC

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

Maciej Piotr Walczyszyn among 172 critical care medicine (internal medicine) physician records in North Carolina

Maciej Piotr Walczyszyn, M.D. is one of 172 critical care medicine (internal medicine) physician records with a practice address in North Carolina. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 51% of them.

  • NPI issued2009 · 51% of these records are older, 47% newer
  • In a Medicare fileYes · 91% of these records are
  • In the CMS Doctors and Clinicians fileYes · 84% of these records are
  • Graduated2009 · median 2007 among the 144 with a school on file
  • Record last updated2023 · 23% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Critical Care Medicine (Internal Medicine) Physician providers in North Carolina

There are 172 critical care medicine (internal medicine) physician records in North Carolina.

All 172 in North Carolina → Every provider in Matthews → Critical Care Medicine (Internal Medicine) Physician nationwide →

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

  1. Souheil Abdel NourMatthews, NC 281051255511028
  2. Navneet Arora, M.DMatthews, NC 281051821367228
  3. Thomas Bice, MDMonroe, NC 281101013171735
  4. Lisa Lindauer, M.D.Monroe, NC 281101649436692
  5. Nicolo Marsoni, M.D.Monroe, NC 281101134268261
  6. Okoronkwo Ogan, MDMonroe, NC 281101730230566
  7. Erica Rabold, MDMonroe, NC 281121164805925
  8. Mohammad Siddiqi, MDHuntersville, NC 280781508150558

Common questions

What is Maciej Piotr Walczyszyn, M.D.'s NPI number?

Maciej Piotr Walczyszyn, M.D.'s National Provider Identifier (NPI) is 1295977858, issued on Mar 29, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Maciej Piotr Walczyszyn, M.D. located?

The NPPES record lists a practice address at 1450 Matthews Township Pkwy Ste 380, Matthews, NC, 28105. Phone: (704) 384-9200. Providers update this record themselves, so call before visiting.

How can I verify Maciej Piotr Walczyszyn, M.D.'s license?

NPPES lists North Carolina license number 2021-01907, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Maciej Piotr Walczyszyn, M.D. prescribe under Medicare Part D?

In 2024, Maciej Piotr Walczyszyn, M.D. had 1,489 Medicare Part D claims for 298 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.