Katarzyna Barbara Perkowska
Internal Medicine Physician · Norristown, PA
Katarzyna Barbara Perkowska is an internal medicine physician with a practice address in Norristown, Pennsylvania, and NPI 1124703475, issued on Jun 15, 2023. Check the license (Pennsylvania MD495084, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Katarzyna Barbara Perkowska
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD495084 PA
MT228980 PA
25MA13082200 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 559 W Germantown Pike, Norristown, PA 19403
- Phone
- (484) 622-1000
- Enumerated
- Jun 15, 2023
- Record last updated
- Jun 18, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 559 W Germantown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katarzyna Barbara Perkowska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD495084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
281 Medicare Part D claims for 94 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Carvedilol17 claims
- Ozempic16 claims
- Losartan Potassium15 claims
- Lisinopril14 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.
Katarzyna Barbara Perkowska among 7,300 internal medicine physician records in Pennsylvania
Katarzyna Barbara Perkowska is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 89% of them.
- NPI issued2023 · 89% of these records are older, 7% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2026 · 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 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 internal medicine physician records list a practice address in Norristown
They are 29 of the 818 NPPES records with a practice address in Norristown, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Norristown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniel Bitetto, M.D.East Norriton, PA 194031861695389
- Bernard Carlin, MDEast Norriton, PA 194031881635936
- Margaret Carrillo, M.D.Norristown, PA 194031821117516
- Michael Cerino, D.O.East Norriton, PA 194031740462795
- Charles Cutler, MDEast Norriton, PA 194031033165196
- Westlane Depew, D.O.Norristown, PA 194031114071198
- Michael Esrick, MDEast Norriton, PA 194031619172665
- Judith Gordon, M.D.Norristown, PA 194031134249352
Common questions
What is Katarzyna Barbara Perkowska's NPI number?
Katarzyna Barbara Perkowska's National Provider Identifier (NPI) is 1124703475, issued on Jun 15, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Katarzyna Barbara Perkowska located?
The NPPES record lists a practice address at 559 W Germantown Pike, Norristown, PA, 19403. Phone: (484) 622-1000. Providers update this record themselves, so call before visiting.
How can I verify Katarzyna Barbara Perkowska's license?
NPPES lists Pennsylvania license number MD495084, 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 Katarzyna Barbara Perkowska prescribe under Medicare Part D?
In 2024, Katarzyna Barbara Perkowska had 281 Medicare Part D claims for 94 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.