NPPES file of Aug 9, 2026

Donald W. Mazur, M.D.

Orthopaedic Surgery Physician · Limerick, PA

Donald W. Mazur, M.D. is an orthopaedic surgery physician with a practice address in Limerick, Pennsylvania, and NPI 1477564276, issued on Aug 10, 2006. Check the license (Pennsylvania MD058804L, 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
1477564276
Name
Donald W. Mazur
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
MD058804L PA
ME152116 FL
Self-reported in NPPES; status is on the state search
Practice location
400 Enterprise Dr FL 2, Limerick, PA 19468
Phone
(267) 335-3558
Enumerated
Aug 10, 2006
Record last updated
May 21, 2024
Fax
(267) 339-3763
Medicare enrollment
Enrolled (PECOS I20050622001100); accepts Medicare assignment
Medical or professional school
Jefferson Medical College Of Thomas Jefferson University, 1992
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 400 Enterprise Dr FL 2

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

  1. Carl Deirmengian, MDOrthopaedic Surgery Physician1205815503
  2. Derek Grabert, PA-CMedical Physician Assistant1417314766
  3. Thomas KitzingerPhysician Assistant1073092268
  4. H Schaaf, MDOrthopaedic Surgery Physician1609872837
  5. Bradley Smith, M.D.Sports Medicine (Family Medicine) Physician1902928047

Verify Donald W. Mazur 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 MD058804L
    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

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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20% more Medicare Part D claims than the average orthopaedic surgery physician in 2024

416 Medicare Part D claims for 200 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 86 claims were for opioids.

  1. Donald Mazur416
  2. Specialty average346

Most prescribed

  1. Meloxicam126 claims
  2. Ondansetron Hcl77 claims
  3. Amoxicillin43 claims
  4. Hydrocodone-Acetaminophen38 claims
  5. Clindamycin Hcl37 claims
  6. Oxycodone-Acetaminophen30 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): 92.1 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 score86.6
  2. Costout of 100 · 30%87.9
  3. Promoting interoperabilityout of 100 · 25%99.0
  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).

Industry payments in 2024: $1,713.97

12 payments; by number, the most common kind was food and beverage; the largest payer was Arthrex, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Donald Mazur$1,714
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 4 group practices

  1. Keystone Rehabilitation Systems IncBirdsboro, PA
  2. Novacare Outpatient Rehabilitation East, Inc.Collegeville, PA
  3. Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
  4. Reconstructive Orthopaedic Associates II LLCLimerick, PA

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

Donald W. Mazur among 1,253 orthopaedic surgery physician records in Pennsylvania

Donald W. Mazur, M.D. is one of 1,253 orthopaedic surgery physician records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 21% of them.

  • NPI issued2006 · 21% of these records are older, 48% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1992 · median 2003 among the 777 with a school on file
  • Record last updated2024 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3 orthopaedic surgery physician records list a practice address in Limerick

They are 3 of the 148 NPPES records with a practice address in Limerick, and 1,253 orthopaedic surgery physician records in Pennsylvania.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Carl Deirmengian, MDLimerick, PA 194681205815503
  2. H Schaaf, MDLimerick, PA 194681609872837
  3. Christopher Williamson, MDRoyersford, PA 194681083900351
  4. Linda D'Andrea, M.D.Pottstown, PA 194641831167477
  5. John Donahue, M.D.Pottstown, PA 194641053373068
  6. James Guille, M.D.Pottstown, PA 194641346218237
  7. Glenn Lipton, M.D.Pottstown, PA 194641861431504
  8. Nikos Pavlides, MDPottstown, PA 194641891726006

Common questions

What is Donald W. Mazur, M.D.'s NPI number?

Donald W. Mazur, M.D.'s National Provider Identifier (NPI) is 1477564276, issued on Aug 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Donald W. Mazur, M.D. located?

The NPPES record lists a practice address at 400 Enterprise Dr FL 2, Limerick, PA, 19468. Phone: (267) 335-3558. Providers update this record themselves, so call before visiting.

How can I verify Donald W. Mazur, M.D.'s license?

NPPES lists Pennsylvania license number MD058804L, 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 Donald W. Mazur, M.D. prescribe under Medicare Part D?

In 2024, Donald W. Mazur, M.D. had 416 Medicare Part D claims for 200 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is Donald W. Mazur, M.D.'s MIPS final score?

The 2023 MIPS final score is 92.1 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.