Quick answers
- Which hospitals does Matthew A. Bayer work at?
- Medicare's official clinician data lists Matthew A. Bayer at 2 hospitals: Thedacare Regional Medical Center - Appleton Inc and Thedacare Regional Medical Center - Neenah. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew A. Bayer see patients?
- Medicare's clinician data lists 2 practice locations, including Neenah, WI and Appleton, WI. Call before your visit to confirm the address.
- What is Matthew A. Bayer's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Matthew A. Bayer accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew A. Bayer 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 Matthew A. Bayer offer telehealth?
- Medicare's clinician data says Matthew A. Bayer offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Matthew A. Bayer?
- (920) 725-0077, as listed in official Medicare / NPI Registry data.
- What is Matthew A. Bayer's NPI number?
- 1558438259. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew A. Bayer works
Medicare's Facility Affiliation Data lists Matthew A. Bayer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute Care Hospital · CCN 520160
- Thedacare Regional Medical Center - NeenahNeenah, WI · Acute Care Hospital · CCN 520045
Practice locations
Addresses where Matthew A. Bayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 2nd StNeenah, WI 54956 (920) 725‑0077
- 2400 E Capitol DrAppleton, WI 54911 (920) 831‑5050
Group practices
Medicare enrollment lists Matthew A. Bayer as a member of this group (CMS data updated 2026-10-02).
- Thedacare, Incorporated647 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1558438259 |
| 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