Syeda Hasan, DO
NPI 1558686956 · Emergency Medicine Physician · Danbury, CT
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Syeda Hasan, DO is a Emergency Medicine Physician provider in Danbury, CT (NPI 1558686956).
Provider details
- NPI number
- 1558686956
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 57222 (CT)
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
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
114 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 | 80 | $178 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 34 | $122 |
Typical Medicare-allowed amounts for these services range $122–$178 (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 (1)
- 70 Dubois StNewburgh, NY 12550-4851Phone: (845) 568-2305
Registry dates
- Enumerated
- 2010-03-29
- Last updated
- 2018-03-17
Frequently asked questions
- What is Syeda Hasan's NPI number?
- Syeda Hasan's National Provider Identifier (NPI) is 1558686956, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Syeda Hasan's specialty?
- Syeda Hasan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Syeda Hasan located?
- Syeda Hasan's practice location on file with NPPES is 24 Hospital Ave, Danbury, CT 06810-6099.
- What is Syeda Hasan's phone number?
- The practice phone number listed in the NPPES registry for Syeda Hasan is (203) 739-7000.
- Does Syeda Hasan accept Medicare?
- Syeda Hasan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Syeda Hasan's NPI active?
- Yes — Syeda Hasan's NPI (1558686956) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.