Quick answers
- Which hospitals does Mark M. Davidson work at?
- Medicare's official clinician data lists Mark M. Davidson at 1 hospital: Cedars-Sinai Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark M. Davidson see patients?
- Medicare's clinician data lists 4 practice locations, including Murrieta, CA, W Hollywood, CA and Lincoln, NE. Call before your visit to confirm the address.
- What is Mark M. Davidson's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Mark M. Davidson accept Medicare assignment?
- Medicare's clinician data says Mark M. Davidson may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Mark M. Davidson offer telehealth?
- Medicare's clinician data says Mark M. Davidson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark M. Davidson?
- (310) 855-0222, as listed in official Medicare / NPI Registry data.
- What is Mark M. Davidson's NPI number?
- 1164459178. 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 M. Davidson works
Medicare's Facility Affiliation Data lists Mark M. Davidson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
Practice locations
Addresses where Mark M. Davidson is enrolled with Medicare (CMS data updated 2026-10-02).
- 26359 Jefferson Ave, Suite DMurrieta, CA 92562
- 8733 Beverly Blvd, Suite 201W Hollywood, CA 90048 (310) 855‑0222
- PO Box, Suite 6971Lincoln, NE 68506
- PO Box, Suite 7487Beverly Hills, CA 90212
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Murrieta
Clinicians with the same Medicare primary specialty in Murrieta, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1164459178 |
| 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