Rosemary A. Mason-Blau, APRN
Family Nurse Practitioner · Lowell, MA
Rosemary A. Mason-Blau, APRN is a family nurse practitioner with a practice address in Lowell, Massachusetts, and NPI 1255985727, issued on Aug 1, 2019. Check the license (Massachusetts 2321155, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rosemary A. Mason-Blau
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 2321155 MA
072061-23 NH
Self-reported in NPPES; status is on the state search - Practice location
- 161 Jackson St, Lowell, MA 01852
- Phone
- (978) 937-9700
- Enumerated
- Aug 1, 2019
- Record last updated
- Jan 3, 2024
- Fax
- (978) 221-6728
- Medicare enrollment
- Enrolled (PECOS I20211201001719); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →
Also registered at 161 Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Frank Abekah, MDStudent in an Organized Health Care Education/Training Program1346185634
- Rafat Al-RejjalStudent in an Organized Health Care Education/Training Program1770079402
- Shannon AlperClinical Social Worker1306414396
- Joseph Aniello, CARCAddiction (Substance Use Disorder) Counselor1871151654
- Muthulakshimi Arumugam, MSN, FNPFamily Medicine Physician1871277251
Verify Rosemary A. Mason-Blau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 2321155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average family nurse practitioner in 2024
719 Medicare Part D claims for 96 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone54 claims
- Atorvastatin Calcium51 claims
- Amlodipine Besylate40 claims
- Lisinopril32 claims
- Omeprazole32 claims
- Albuterol Sulfate Hfa22 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.
Industry payments in 2024: $30.16
1 payment: food and beverage; the largest payer was Axonics, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lowell Community Health Center, Inc.Lowell, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rosemary A. Mason-Blau among 4,724 family nurse practitioner records in Massachusetts
Rosemary A. Mason-Blau, APRN is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 54% of them.
- NPI issued2019 · 54% of these records are older, 40% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2019 · median 2019 among the 2,704 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
73 family nurse practitioner records list a practice address in Lowell
They are 73 of the 2,992 NPPES records with a practice address in Lowell, and 4,724 family nurse practitioner records in Massachusetts.
All 4,724 in Massachusetts → Every provider in Lowell → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jessica Ames, NPLowell, MA 018521306147863
- Denise Baxter, ARNPLowell, MA 018521184824849
- Valerie Carmichael, NPLowell, MA 018521467995563
- Tanya Coutu, FNP-BC, RNLowell, MA 018521013201177
- Phuong DangLowell, MA 018521780133793
- Ann Descoteaux, F.N.P.Lowell, MA 018521629291083
- Nalyne Dom, FNP-BCLowell, MA 018521427424845
- Carlos Flores, APRN-BCLowell, MA 018521891827135
Common questions
What is Rosemary A. Mason-Blau, APRN's NPI number?
Rosemary A. Mason-Blau, APRN's National Provider Identifier (NPI) is 1255985727, issued on Aug 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Rosemary A. Mason-Blau, APRN located?
The NPPES record lists a practice address at 161 Jackson St, Lowell, MA, 01852. Phone: (978) 937-9700. Providers update this record themselves, so call before visiting.
How can I verify Rosemary A. Mason-Blau, APRN's license?
NPPES lists Massachusetts license number 2321155, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Rosemary A. Mason-Blau, APRN prescribe under Medicare Part D?
In 2024, Rosemary A. Mason-Blau, APRN had 719 Medicare Part D claims for 96 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.