Lynn Mastrianni, NP
NPI 1205177672 · Gerontology Nurse Practitioner · New Haven, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lynn Mastrianni, NP is a Gerontology Nurse Practitioner provider in New Haven, CT (NPI 1205177672).
Provider details
- NPI number
- 1205177672
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 006560 (CT)
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 tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
264 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 247 | $84 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $57 |
Typical Medicare-allowed amounts for these services range $57–$84 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 328 | 71 |
| Abiraterone Acetate | 272 | 49 |
| Enzalutamidebrand: Xtandi | 237 | 43 |
| Darolutamidebrand: Nubeqa | 128 | 25 |
| Relugolixbrand: Orgovyx | 64 | 11 |
| Oxycodone Hcl | 59 | 33 |
| Apalutamidebrand: Erleada | 48 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$195 across 2 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
Additional practice locations (2)
- 263 Farmington AveFarmington, CT 06030-8040Phone: (860) 679-2100Fax: (860) 676-3443
- 85 Retreat AveHartford, CT 06106-2555Phone: (860) 972-4183
Registry dates
- Enumerated
- 2013-03-11
- Last updated
- 2026-05-26
- Certified
- 2026-05-26
Frequently asked questions
- What is Lynn Mastrianni's NPI number?
- Lynn Mastrianni's National Provider Identifier (NPI) is 1205177672, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Mastrianni's specialty?
- Lynn Mastrianni is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lynn Mastrianni located?
- Lynn Mastrianni's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Lynn Mastrianni's phone number?
- The practice phone number listed in the NPPES registry for Lynn Mastrianni is (203) 200-4822.
- Does Lynn Mastrianni accept Medicare?
- Lynn Mastrianni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lynn Mastrianni's NPI active?
- Yes — Lynn Mastrianni's NPI (1205177672) is active in the NPPES registry as of the last update on 2026-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.