Karen S. Piwowar, M.D.
Family Medicine Physician · Edgewater, NJ
Karen S. Piwowar, M.D. is a family medicine physician with a practice address in Edgewater, New Jersey, and NPI 1114345444, issued on Apr 3, 2014. Check the license (New Jersey 25MA10131600, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karen S. Piwowar
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 25MA10131600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 27 Edgewater Towne Ctr, Edgewater, NJ 07020
- Phone
- (888) 663-6331
- Enumerated
- Apr 3, 2014
- Record last updated
- Mar 19, 2026
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20251024002851); may accept Medicare assignment
- Medical or professional school
- Rutgers, Robert Woood Johnson Medical School, 2014
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,770 in New Jersey → Look up another NPI →
Also registered at 27 Edgewater Towne Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rutul Amin, DOFamily Medicine Physician1396366183
- Birju RaoPhysician Assistant1598355521
- Jennifer Trela, MDFamily Medicine Physician1063034239
Verify Karen S. Piwowar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA10131600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
344 Medicare Part D claims for 107 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium31 claims
- Amlodipine Besylate28 claims
- Rosuvastatin Calcium23 claims
- Levothyroxine Sodium21 claims
- Losartan Potassium21 claims
- Metoprolol Succinate18 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.
Karen S. Piwowar among 2,770 family medicine physician records in New Jersey
Karen S. Piwowar, M.D. is one of 2,770 family medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 71% of them.
- NPI issued2014 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2014 · median 2006 among the 1,875 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 family medicine physician records list a practice address in Edgewater
They are 6 of the 209 NPPES records with a practice address in Edgewater, and 2,770 family medicine physician records in New Jersey.
All 2,770 in New Jersey → Every provider in Edgewater → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rutul Amin, DOEdgewater, NJ 070201396366183
- Areej Belal, MDEdgewater, NJ 070201447954789
- Chika Kuwama, MDEdgewater, NJ 070201275673907
- Jennifer Trela, MDEdgewater, NJ 070201063034239
- Isaac Zaki, M.D.Edgewater, NJ 070201114211190
- Soniya Bhate, M.D.East Orange, NJ 070181730294190
- Hongsun Choi, M.D.East Orange, NJ 070181982665592
- Frederic Lu, MD, MPHEast Orange, NJ 070181831619220
Common questions
What is Karen S. Piwowar, M.D.'s NPI number?
Karen S. Piwowar, M.D.'s National Provider Identifier (NPI) is 1114345444, issued on Apr 3, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Karen S. Piwowar, M.D. located?
The NPPES record lists a practice address at 27 Edgewater Towne Ctr, Edgewater, NJ, 07020. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Karen S. Piwowar, M.D.'s license?
NPPES lists New Jersey license number 25MA10131600, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen S. Piwowar, M.D. prescribe under Medicare Part D?
In 2024, Karen S. Piwowar, M.D. had 344 Medicare Part D claims for 107 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.