Quick answers
- Which hospitals does Syed Hassan work at?
- Medicare's official clinician data lists Syed Hassan at 5 hospitals: Advocate Good Shepherd Hospital, Mercy Harvard Hospital, Mercy Health System Corp, Mercyhealth Hospital & Physician Clinic-Crystal LA… and Northwestern Medicine McHenry. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Syed Hassan see patients?
- Medicare's clinician data lists 2 practice locations, including Woodstock, IL and McHenry, IL. Call before your visit to confirm the address.
- What is Syed Hassan's specialty?
- Medicare lists Family Practice as the primary specialty, and also Geriatric Medicine.
- Does Syed Hassan accept Medicare assignment?
- Yes. Medicare's clinician data says Syed Hassan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Syed Hassan offer telehealth?
- Medicare's clinician data says Syed Hassan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Syed Hassan?
- (815) 337-7100, as listed in official Medicare / NPI Registry data.
- What is Syed Hassan's NPI number?
- 1063637544. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Syed Hassan works
Medicare's Facility Affiliation Data lists Syed Hassan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Good Shepherd HospitalBarrington, IL · Acute Care Hospital · CCN 140291
- Mercy Harvard HospitalHarvard, IL · Critical Access Hospital · CCN 141335
- Mercy Health System CorpJanesville, WI · Acute Care Hospital · CCN 520066
- Mercyhealth Hospital & Physician Clinic-Crystal LA…Crystal Lake, IL · Acute Care Hospital · CCN 140308
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · CCN 140116
Practice locations
Addresses where Syed Hassan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2000 Lake AveWoodstock, IL 60098 (815) 337‑7100
- 3922 Mercy DrMcHenry, IL 60050 (815) 344‑4499
Group practices
Medicare enrollment lists Syed Hassan as a member of this group (CMS data updated 2026-10-02).
- Mercy Health System Corporation753 clinicians in the group
Specialties
- Family Practiceprimary
- Geriatric Medicinealso
Other family doctors in Woodstock
Clinicians with the same Medicare primary specialty in Woodstock, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1063637544 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians