Andrew Sebastyan, MD
NPI 1992790745 · Family Medicine Physician · Nashua, NH
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Sebastyan, MD is a Family Medicine Physician provider in Nashua, NH (NPI 1992790745).
Provider details
- NPI number
- 1992790745
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 180047 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
707 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 353 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 194 | $69 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 140 | $102 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 20 | $121 |
Typical Medicare-allowed amounts for these services range $69–$121 (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 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 495 | 158 |
| Atorvastatin Calcium | 365 | 112 |
| Amlodipine Besylate | 265 | 83 |
| Pantoprazole Sodium | 227 | 75 |
| Lisinopril | 215 | 74 |
| Levothyroxine Sodium | 180 | 56 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-19
- Last updated
- 2015-01-21
Frequently asked questions
- What is Andrew Sebastyan's NPI number?
- Andrew Sebastyan's National Provider Identifier (NPI) is 1992790745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Sebastyan's specialty?
- Andrew Sebastyan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Sebastyan located?
- Andrew Sebastyan's practice location on file with NPPES is 173 Daniel Webster Hwy, Nashua, NH 03060-5256.
- What is Andrew Sebastyan's phone number?
- The practice phone number listed in the NPPES registry for Andrew Sebastyan is (603) 891-4804.
- Does Andrew Sebastyan accept Medicare?
- Andrew Sebastyan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Sebastyan's NPI active?
- Yes — Andrew Sebastyan's NPI (1992790745) is active in the NPPES registry as of the last update on 2015-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.