NPPES file of Aug 9, 2026

Katalin Kovalszki, MD

Dermatology Physician · Westford, MA

Katalin Kovalszki, MD is a dermatology physician with a practice address in Westford, Massachusetts, and NPI 1386761039, issued on Mar 26, 2007. Check the license (Massachusetts 239821, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; 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
1386761039
Name
Katalin Kovalszki
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
239821 MA
Self-reported in NPPES; status is on the state search
Practice location
133 Littleton RD, Westford, MA 01886
Phone
(978) 692-9978
Enumerated
Mar 26, 2007
Record last updated
Oct 27, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(978) 371-0522
Medicare enrollment
Enrolled (PECOS I20091001000597); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 2005
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 133 Littleton RD

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

  1. Brad Alpert, MDPediatrics Physician1245209873
  2. Andreas Athanasiou, MDPediatrics Physician1972590958
  3. Seema Azam, M.D.Internal Medicine Physician1043278054
  4. Tak-Yin Chau, O.D.Optometrist1346392990
  5. James Cohen, M.D.Internal Medicine Physician1013965003
  6. Maureen Dinapoli, NPPediatric Nurse Practitioner1659467389

Verify Katalin Kovalszki in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 239821
    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 Massachusetts 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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3% more Medicare Part D claims than the average dermatology physician in 2024

819 Medicare Part D claims for 339 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Katalin Kovalszki819
  2. Specialty average797

Most prescribed

  1. Clobetasol Propionate120 claims
  2. Triamcinolone Acetonide92 claims
  3. Metronidazole37 claims
  4. Fluorouracil36 claims
  5. Ketoconazole35 claims
  6. Nystatin34 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: $34.57

1 payment: food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katalin Kovalszki$34.57
  2. Specialty average$8,544.61

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. Adult And Pediatric Dermatology PCConcord, MA

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

Katalin Kovalszki among 627 dermatology physician records in Massachusetts

Katalin Kovalszki, MD is one of 627 dermatology physician records with a practice address in Massachusetts. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.

  • NPI issued2007 · 39% of these records are older, 53% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2005 · median 2008 among the 445 with a school on file
  • Record last updated2014 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Massachusetts

There are 627 dermatology physician records in Massachusetts.

The 8 dermatology physician records with the nearest ZIP codes

  1. Steven Franks, MDWestford, MA 018861548251093
  2. Christy Williams, MDWestford, MA 018861467442632
  3. David Barzilai, M.D., PH.D.Winchester, MA 018901760607808
  4. Marilyn Capek, M.D.Winchester, MA 018901992848469
  5. Jane Danahy, M.D.Winchester, MA 018901992752620
  6. Robert O'BrienWinchester, MA 018901568566420
  7. Joshua ShofnerWinchester, MA 018901023218237
  8. Suzanne Virnelli, M.D.Winchester, MA 018901982756581

Common questions

What is Katalin Kovalszki, MD's NPI number?

Katalin Kovalszki, MD's National Provider Identifier (NPI) is 1386761039, issued on Mar 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Katalin Kovalszki, MD located?

The NPPES record lists a practice address at 133 Littleton RD, Westford, MA, 01886. Phone: (978) 692-9978. Providers update this record themselves, so call before visiting.

How can I verify Katalin Kovalszki, MD's license?

NPPES lists Massachusetts license number 239821, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Katalin Kovalszki, MD prescribe under Medicare Part D?

In 2024, Katalin Kovalszki, MD had 819 Medicare Part D claims for 339 beneficiaries; the average among dermatology physician prescribers was 797. 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.

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.