Quick answers
- Which hospitals does Mark Folmsbee work at?
- Medicare's official clinician data lists Mark Folmsbee at 3 hospitals: Colorado River Medical Center, La Paz Regional Hospital and Valley View Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Folmsbee see patients?
- Medicare's clinician data lists 2 practice locations, including Adelanto, CA and Needles, CA. Call before your visit to confirm the address.
- What is Mark Folmsbee's specialty?
- Medicare lists General Practice as the primary specialty.
- Does Mark Folmsbee accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Folmsbee 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 Mark Folmsbee?
- (760) 530-9944, as listed in official Medicare / NPI Registry data.
- What is Mark Folmsbee's NPI number?
- 1427393123. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark Folmsbee works
Medicare's Facility Affiliation Data lists Mark Folmsbee at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Colorado River Medical CenterNeedles, CA · Critical Access Hospital · CCN 051323
- La Paz Regional HospitalParker, AZ · Critical Access Hospital · CCN 031317
- Valley View Medical CenterFort Mohave, AZ · Acute Care Hospital · CCN 030117
Practice locations
Addresses where Mark Folmsbee is enrolled with Medicare (CMS data updated 2026-10-02).
- 11888 Bartlett AveAdelanto, CA 92301 (760) 530‑9944
- 820 W Broadway StNeedles, CA 92363 (760) 326‑0222
Group practices
Medicare enrollment lists Mark Folmsbee as a member of this group (CMS data updated 2026-10-02).
- Tri-State Community Healthcare Center11 clinicians in the group
Specialties
- General Practiceprimary
Other general practitioners in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427393123 |
| 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