Marion Massaro, ARNP
NPI 1114974169 · Registered Nurse · Bellingham, WA
Marion Massaro, ARNP is a Registered Nurse provider in Bellingham, WA (NPI 1114974169).
Provider details
- NPI number
- 1114974169
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN581388 (CA)
Specialties & taxonomies
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
1 documented practice location
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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Fluoxetine Hcl | 32 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 17 |
| Clonazepam | 12 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 12 |
| Lithium Carbonate | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-27
- Last updated
- 2008-05-13
Frequently asked questions
- What is Marion Massaro's NPI number?
- Marion Massaro's National Provider Identifier (NPI) is 1114974169, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marion Massaro's specialty?
- Marion Massaro is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Marion Massaro located?
- Marion Massaro's practice location on file with NPPES is 1112 11th Street #301, Bellingham, WA 98225.
- What is Marion Massaro's phone number?
- The practice phone number listed in the NPPES registry for Marion Massaro is (760) 471-4073.
- Is Marion Massaro's NPI active?
- Yes — Marion Massaro's NPI (1114974169) is active in the NPPES registry as of the last update on 2008-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.