Katharine A. Berthiaume, CNP
Primary Care Nurse Practitioner · Westwood, MA
Katharine A. Berthiaume, CNP is a primary care nurse practitioner with a practice address in Westwood, Massachusetts, and NPI 1518694355, issued on Aug 2, 2022. Check the license (Massachusetts RN2278918, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katharine A. Berthiaume
- Credential
- CNP
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- RN2278918 MA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Brigham Way, Westwood, MA 02090
- Phone
- (781) 471-2200
- Enumerated
- Aug 2, 2022
- Record last updated
- Aug 2, 2022
- Medicare enrollment
- Enrolled (PECOS I20221207001003); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 376 in Massachusetts → Look up another NPI →
Also registered at 100 Brigham Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Brown, FNP-BCFamily Nurse Practitioner1467921064
- Eric Diamond, M.D.Internal Medicine Physician1285607861
- Samantha Oslowski, MSN, RN, AGNPPrimary Care Nurse Practitioner1174412506
- Christine Wood, NPAdult Health Nurse Practitioner1720455934
Verify Katharine A. Berthiaume in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2278918Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
767 Medicare Part D claims for 287 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium53 claims
- Lisinopril47 claims
- Levothyroxine Sodium42 claims
- Hydrochlorothiazide39 claims
- Amlodipine Besylate38 claims
- Sertraline Hcl24 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.
Bills Medicare through one group practice
- Mass General Brigham Community Physicians IncWestwood, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharine A. Berthiaume among 376 primary care nurse practitioner records in Massachusetts
Katharine A. Berthiaume, CNP is one of 376 primary care nurse practitioner records with a practice address in Massachusetts. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 74% of them.
- NPI issued2022 · 74% of these records are older, 20% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2022 · median 2019 among the 196 with a school on file
- Record last updated2022 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Massachusetts
There are 376 primary care nurse practitioner records in Massachusetts.
All 376 in Massachusetts → Every provider in Westwood → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Samantha Oslowski, MSN, RN, AGNPWestwood, MA 020901174412506
- Jenny Banach, CNPWrentham, MA 020931417346057
- Bonnie Fitzgerald, AGPCNP-BCWrentham, MA 020931841691573
- Colleen Viscarra, NP-CWrentham, MA 020931427309640
- Hilary Ziegner, NP-CWrentham, MA 020931184054694
- Vickey EugeneStoughton, MA 020721841155769
- Changhee Park, NPBoston, MA 021081013570605
- Charlotte Robertshaw, NPBoston, MA 021091780378406
Common questions
What is Katharine A. Berthiaume, CNP's NPI number?
Katharine A. Berthiaume, CNP's National Provider Identifier (NPI) is 1518694355, issued on Aug 2, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Katharine A. Berthiaume, CNP located?
The NPPES record lists a practice address at 100 Brigham Way, Westwood, MA, 02090. Phone: (781) 471-2200. Providers update this record themselves, so call before visiting.
How can I verify Katharine A. Berthiaume, CNP's license?
NPPES lists Massachusetts license number RN2278918, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Katharine A. Berthiaume, CNP prescribe under Medicare Part D?
In 2024, Katharine A. Berthiaume, CNP had 767 Medicare Part D claims for 287 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.