Karen E. Peterson, NP
Nurse Practitioner · Leominster, MA
Karen E. Peterson, NP is a nurse practitioner with a practice address in Leominster, Massachusetts, and NPI 1003877911, issued on Mar 30, 2006. Check the license (Massachusetts 205602, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen E. Peterson
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 205602 MA
Self-reported in NPPES; status is on the state search - Practice location
- 48 Nelson Street, Leominster, MA 01453
- Phone
- (978) 466-4396
- Enumerated
- Mar 30, 2006
- Record last updated
- Jan 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (978) 466-4029
- Medicaid ID
- 0325601 MA
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Verify Karen E. Peterson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 205602Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average nurse practitioner in 2024
2,312 Medicare Part D claims for 365 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 66 claims were for opioids.
Most prescribed
- Atorvastatin Calcium169 claims
- Furosemide90 claims
- Gabapentin87 claims
- Omeprazole85 claims
- Amlodipine Besylate72 claims
- Lisinopril71 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 E. Peterson among 3,480 nurse practitioner records in Massachusetts
Karen E. Peterson, NP is one of 3,480 nurse practitioner records with a practice address in Massachusetts. 71% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 78% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2016 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 nurse practitioner records list a practice address in Leominster
They are 26 of the 1,151 NPPES records with a practice address in Leominster, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Leominster → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Erica Dee, NPLeominster, MA 014531881653905
- Michaela Haynes-Kaddy, C.N.P.Leominster, MA 014531992114458
- Abby Herget, NPLeominster, MA 014531447666466
- Kristal Imperio, NPLeominster, MA 014531780650234
- Brian Laurits, NPLeominster, MA 014531699062679
- Janice Lewis, NPLeominster, MA 014531962477521
- Poliana Lin, APRNLeominster, MA 014531013313618
- Elizabeth Melehov, NPLeominster, MA 014531700180080
Common questions
What is Karen E. Peterson, NP's NPI number?
Karen E. Peterson, NP's National Provider Identifier (NPI) is 1003877911, issued on Mar 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen E. Peterson, NP located?
The NPPES record lists a practice address at 48 Nelson Street, Leominster, MA, 01453. Phone: (978) 466-4396. Providers update this record themselves, so call before visiting.
How can I verify Karen E. Peterson, NP's license?
NPPES lists Massachusetts license number 205602, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Karen E. Peterson, NP prescribe under Medicare Part D?
In 2024, Karen E. Peterson, NP had 2,312 Medicare Part D claims for 365 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.