Karen E. Piren, RN, APN, C
Psychiatric/Mental Health Nurse Practitioner · Lawrenceville, NJ
Karen E. Piren, RN, APN, C is a psychiatric/mental health nurse practitioner with a practice address in Lawrenceville, New Jersey, and NPI 1316165095, issued on Apr 20, 2007. Check the license (New Jersey 26NJ00012900, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen E. Piren
- Credential
- RN, APN, C
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 26NJ00012900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 2550 Brunswick Pike, Lawrenceville, NJ 08648
- Phone
- (609) 396-8877
- Enumerated
- Apr 20, 2007
- Record last updated
- Jul 11, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (609) 396-6024
- Medicare enrollment
- Enrolled (PECOS I20070907000509); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 1,806 in New Jersey → Look up another NPI →
Also registered at 2550 Brunswick Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carla BakrMental Health Counselor1730782566
- Linda Calderone, APNAdult Psychiatric/Mental Health Clinical Nurse Specialist1790045227
- Andrew Davis, LCSWClinical Social Worker1235200163
- Kara Ellis, LCSWClinical Social Worker1306488168
- Loriann Fell, LACCounselor1386040004
- Beatrice Iloka, APNPsychiatric/Mental Health Nurse Practitioner1174903751
Verify Karen E. Piren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 26NJ00012900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,174 Medicare Part D claims for 56 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Olanzapine96 claims
- Benztropine Mesylate81 claims
- Trazodone Hcl70 claims
- Haloperidol Decanoate67 claims
- Haloperidol55 claims
- Sertraline Hcl54 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: $215.87
11 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Oaks Integrated CareWestampton, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen E. Piren among 1,806 psychiatric/mental health nurse practitioner records in New Jersey
Karen E. Piren, RN, APN, C is one of 1,806 psychiatric/mental health nurse practitioner records with a practice address in New Jersey. 72% 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 4% of them.
- NPI issued2007 · 4% of these records are older, 93% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2001 · median 2021 among the 1,070 with a school on file
- Record last updated2012 · 21% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 psychiatric/mental health nurse practitioner records list a practice address in Lawrenceville
They are 10 of the 693 NPPES records with a practice address in Lawrenceville, and 1,806 psychiatric/mental health nurse practitioner records in New Jersey.
All 1,806 in New Jersey → Every provider in Lawrenceville → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Helen Blackman, REGISTERED NURSELawrence Township, NJ 086481649684762
- Caroline Bonfanti, PMHNPLawrence, NJ 086481619308731
- Stephan Brautigam, CRNPLawrenceville, NJ 086481215392550
- Michael HaasLawrenceville, NJ 086481487573267
- Kelly Houston, DNP, PMHNP-BCLawrenceville, NJ 086481275103665
- Beatrice Iloka, APNLawrenceville, NJ 086481174903751
- Nadia Marcelin, APNLawrenceville, NJ 086481225776024
- Guerline Metelus-Yacinthe, APNLawrenceville, NJ 086481386451854
Common questions
What is Karen E. Piren, RN, APN, C's NPI number?
Karen E. Piren, RN, APN, C's National Provider Identifier (NPI) is 1316165095, issued on Apr 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen E. Piren, RN, APN, C located?
The NPPES record lists a practice address at 2550 Brunswick Pike, Lawrenceville, NJ, 08648. Phone: (609) 396-8877. Providers update this record themselves, so call before visiting.
How can I verify Karen E. Piren, RN, APN, C's license?
NPPES lists New Jersey license number 26NJ00012900, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
How much does Karen E. Piren, RN, APN, C prescribe under Medicare Part D?
In 2024, Karen E. Piren, RN, APN, C had 1,174 Medicare Part D claims for 56 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.