Rosemary Mason-Blau, APRN
NPI 1255985727 · Family Nurse Practitioner · Lowell, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosemary Mason-Blau, APRN is a Family Nurse Practitioner provider in Lowell, MA (NPI 1255985727).
Provider details
- NPI number
- 1255985727
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 072061-23 (NH)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 54 | — |
| Atorvastatin Calcium | 51 | 18 |
| Amlodipine Besylate | 40 | 13 |
| Lisinopril | 32 | 11 |
| Omeprazole | 32 | 13 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-08-01
- Last updated
- 2024-01-03
- Certified
- 2024-01-03
Frequently asked questions
- What is Rosemary Mason-Blau's NPI number?
- Rosemary Mason-Blau's National Provider Identifier (NPI) is 1255985727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosemary Mason-Blau's specialty?
- Rosemary Mason-Blau is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rosemary Mason-Blau located?
- Rosemary Mason-Blau's practice location on file with NPPES is 161 Jackson St, Lowell, MA 01852-2103.
- What is Rosemary Mason-Blau's phone number?
- The practice phone number listed in the NPPES registry for Rosemary Mason-Blau is (978) 937-9700.
- Does Rosemary Mason-Blau accept Medicare?
- Rosemary Mason-Blau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosemary Mason-Blau's NPI active?
- Yes — Rosemary Mason-Blau's NPI (1255985727) is active in the NPPES registry as of the last update on 2024-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.