Quick answers
- Which hospitals does Douglas H. Bryan work at?
- Medicare's official clinician data lists Douglas H. Bryan at 4 hospitals: Mercy Harvard Hospital, Mercy Health System Corp, Mercy Walworth Hospital & Medical Center and Mercyhealth Hospital & Physician Clinic-Crystal LA…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas H. Bryan see patients?
- Medicare's clinician data lists 3 practice locations, including Harvard, IL, Woodstock, IL and Lake Geneva, WI. Call before your visit to confirm the address.
- What is Douglas H. Bryan's specialty?
- Medicare lists Vascular Surgery as the primary specialty, and also General Surgery.
- Does Douglas H. Bryan accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas H. Bryan 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.
- What is the phone number for Douglas H. Bryan?
- (815) 943-8090, as listed in official Medicare / NPI Registry data.
- What is Douglas H. Bryan's NPI number?
- 1285743955. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas H. Bryan works
Medicare's Facility Affiliation Data lists Douglas H. Bryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Harvard HospitalHarvard, IL · Critical Access Hospital · CCN 141335
- Mercy Health System CorpJanesville, WI · Acute Care Hospital · CCN 520066
- Mercy Walworth Hospital & Medical CenterLake Geneva, WI · Critical Access Hospital · CCN 521357
- Mercyhealth Hospital & Physician Clinic-Crystal LA…Crystal Lake, IL · Acute Care Hospital · CCN 140308
Practice locations
Addresses where Douglas H. Bryan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 Grant StHarvard, IL 60033 (815) 943‑8090
- 2000 Lake AveWoodstock, IL 60098 (815) 337‑7100
- N2950 State Rd, Suite 67Lake Geneva, WI 53147 (262) 245‑0535
Group practices
Medicare enrollment lists Douglas H. Bryan as a member of this group (CMS data updated 2026-10-02).
- Mercy Health System Corporation753 clinicians in the group
Specialties
- Vascular Surgeryprimary
- General Surgeryalso
Other vascular surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285743955 |
| 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