Katharine Berthiaume, CNP
NPI 1518694355 · Primary Care Nurse Practitioner · Westwood, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katharine Berthiaume, CNP is a Primary Care Nurse Practitioner provider in Westwood, MA (NPI 1518694355).
Provider details
- NPI number
- 1518694355
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN2278918 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
302 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $84 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 84 | $120 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $166 |
| Administration of Pneumococcal VaccineG0009 | 15 | $35 |
Typical Medicare-allowed amounts for these services range $35–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 53 | 26 |
| Lisinopril | 47 | 20 |
| Levothyroxine Sodium | 42 | 25 |
| Hydrochlorothiazide | 39 | 20 |
| Amlodipine Besylate | 38 | 16 |
| Sertraline Hcl | 24 | 14 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-08-02
- Last updated
- 2022-08-02
- Certified
- 2022-08-02
Frequently asked questions
- What is Katharine Berthiaume's NPI number?
- Katharine Berthiaume's National Provider Identifier (NPI) is 1518694355, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Berthiaume's specialty?
- Katharine Berthiaume is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katharine Berthiaume located?
- Katharine Berthiaume's practice location on file with NPPES is 100 Brigham Way, Westwood, MA 02090-2445.
- What is Katharine Berthiaume's phone number?
- The practice phone number listed in the NPPES registry for Katharine Berthiaume is (781) 471-2200.
- Does Katharine Berthiaume accept Medicare?
- Katharine Berthiaume is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katharine Berthiaume's NPI active?
- Yes — Katharine Berthiaume's NPI (1518694355) is active in the NPPES registry as of the last update on 2022-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.