Mark Fusunyan, MD
NPI 1568984953 · Psychiatry Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Fusunyan, MD is a Psychiatry Physician provider in San Jose, CA (NPI 1568984953).
Provider details
- NPI number
- 1568984953
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 271557 (MA)
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
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
60 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) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 60 | $188 |
Typical Medicare-allowed amounts for these services range $188–$188 (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.
Practice location
Mailing address
Additional practice locations (2)
- 401 Quarry RdPalo Alto, CA 94304-1419Phone: (781) 835-5720
- 55 Fruit StMassachusetts General HospitalBoston, MA 02114-2621Phone: (617) 726-9550
Registry dates
- Enumerated
- 2017-07-07
- Last updated
- 2022-12-14
- Certified
- 2022-12-14
Frequently asked questions
- What is Mark Fusunyan's NPI number?
- Mark Fusunyan's National Provider Identifier (NPI) is 1568984953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Fusunyan's specialty?
- Mark Fusunyan is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Fusunyan located?
- Mark Fusunyan's practice location on file with NPPES is 871 Enborg Ct, San Jose, CA 95128-2645.
- What is Mark Fusunyan's phone number?
- The practice phone number listed in the NPPES registry for Mark Fusunyan is (408) 855-5100.
- Does Mark Fusunyan accept Medicare?
- Mark Fusunyan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Fusunyan's NPI active?
- Yes — Mark Fusunyan's NPI (1568984953) is active in the NPPES registry as of the last update on 2022-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.