Ruth Masterson, RNCS
NPI 1801898846 · Psychiatric/Mental Health Clinical Nurse Specialist · Lynn, MA
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Masterson, RNCS is a Psychiatric/Mental Health Clinical Nurse Specialist provider in Lynn, MA (NPI 1801898846).
Provider details
- NPI number
- 1801898846
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RNCS
- Sex
- Female
- Sole proprietor
- No
- License
- 143918 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 116 | 22 |
| Trazodone Hcl | 79 | 18 |
| Risperidone | 71 | — |
| Sertraline Hcl | 58 | 11 |
| Escitalopram Oxalate | 52 | 11 |
| Bupropion Hclbrand: Bupropion Xl | 42 | — |
| Fluoxetine Hcl |
Mailing address
Additional practice locations (2)
- 37 Friend StLynn, MA 01902Phone: (781) 715-3816
- 37 Friend StLynn, MA 01902-3068Phone: (781) 715-3816
Registry dates
- Enumerated
- 2005-08-10
- Last updated
- 2025-01-28
- Certified
- 2025-01-28
Frequently asked questions
- What is Ruth Masterson's NPI number?
- Ruth Masterson's National Provider Identifier (NPI) is 1801898846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Masterson's specialty?
- Ruth Masterson is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ruth Masterson located?
- Ruth Masterson's practice location on file with NPPES is 37 Friend St, Lynn, MA 01902.
- What is Ruth Masterson's phone number?
- The practice phone number listed in the NPPES registry for Ruth Masterson is (781) 715-3816.
- Does Ruth Masterson accept Medicare?
- Ruth Masterson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Masterson's NPI active?
- Yes — Ruth Masterson's NPI (1801898846) is active in the NPPES registry as of the last update on 2025-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.