Rosemary Janas, FNP
NPI 1104978980 · Internal Medicine Physician · Tewksbury, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosemary Janas, FNP is a Internal Medicine Physician provider in Tewksbury, MA (NPI 1104978980).
Provider details
- NPI number
- 1104978980
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 155482 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 · 70 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 239 | 81 |
| Metoprolol Succinate | 174 | 53 |
| Lisinopril | 151 | 56 |
| Simvastatin | 135 | 39 |
| Lorazepam | 113 | 26 |
| Alprazolam | 110 | 25 |
| Omeprazole | 101 | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,688 across 77 records (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
- 2007-01-18
- Last updated
- 2011-02-15
Frequently asked questions
- What is Rosemary Janas's NPI number?
- Rosemary Janas's National Provider Identifier (NPI) is 1104978980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosemary Janas's specialty?
- Rosemary Janas is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rosemary Janas located?
- Rosemary Janas's practice location on file with NPPES is 600 Clark Rd, Tewksbury, MA 01876-1699.
- What is Rosemary Janas's phone number?
- The practice phone number listed in the NPPES registry for Rosemary Janas is (978) 453-8261.
- Does Rosemary Janas accept Medicare?
- Rosemary Janas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosemary Janas's NPI active?
- Yes — Rosemary Janas's NPI (1104978980) is active in the NPPES registry as of the last update on 2011-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.