Quick answers
- Where does Joseph P. Marnell see patients?
- Medicare's clinician data lists 1 practice location in Annandale, MN. Call before your visit to confirm the address.
- What is Joseph P. Marnell's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Joseph P. Marnell accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph P. Marnell 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 Joseph P. Marnell?
- (320) 682-5225, as listed in official Medicare / NPI Registry data.
- What is Joseph P. Marnell's NPI number?
- 1801835103. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Joseph P. Marnell is enrolled with Medicare (CMS data updated 2026-10-02).
- 440 Elm St EAnnandale, MN 55302 (320) 682‑5225
Group practices
Medicare enrollment lists Joseph P. Marnell as a member of this group (CMS data updated 2026-10-02).
- Allina Health System3,842 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Annandale
Clinicians with the same Medicare primary specialty in Annandale, MN — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801835103 |
| 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
- 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