Nicholas Martirossian, PA-C
NPI 1588377980 · Physician Assistant · Westerly, RI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Martirossian, PA-C is a Physician Assistant provider in Westerly, RI (NPI 1588377980).
Provider details
- NPI number
- 1588377980
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Medical Physician Assistant363AM0700X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
322 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 146 | $149 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 114 | $103 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 50 | $61 |
| Critical Care, First 30-74 Minutes99291 | 12 | $181 |
Typical Medicare-allowed amounts for these services range $61–$181 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 48 | 47 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 38 | 38 |
| Doxycycline Hyclate | 35 | 35 |
| Prednisone | 27 | 26 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 27 | 27 |
| Cyclobenzaprine Hcl | 22 | 22 |
| Oxycodone Hcl | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-12-30
- Last updated
- 2022-12-30
- Certified
- 2022-12-30
Frequently asked questions
- What is Nicholas Martirossian's NPI number?
- Nicholas Martirossian's National Provider Identifier (NPI) is 1588377980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Martirossian's specialty?
- Nicholas Martirossian is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nicholas Martirossian located?
- Nicholas Martirossian's practice location on file with NPPES is 25 Wells St, Westerly, RI 02891-2922.
- What is Nicholas Martirossian's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Martirossian is (401) 348-3325.
- Does Nicholas Martirossian accept Medicare?
- Nicholas Martirossian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Martirossian's NPI active?
- Yes — Nicholas Martirossian's NPI (1588377980) is active in the NPPES registry as of the last update on 2022-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.