Quick answers
- Which hospitals does Daniel Harrison work at?
- Medicare's official clinician data lists Daniel Harrison at 3 hospitals: Mammoth Hospital, Northern Inyo Hospital and Palomar Health Downtown Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel Harrison see patients?
- Medicare's clinician data lists 3 practice locations, including Poway, CA, Escondido, CA and Mammoth Lakes, CA. Call before your visit to confirm the address.
- What is Daniel Harrison's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Daniel Harrison accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel Harrison 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 Daniel Harrison?
- (310) 379-2134, as listed in official Medicare / NPI Registry data.
- What is Daniel Harrison's NPI number?
- 1629098884. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel Harrison works
Medicare's Facility Affiliation Data lists Daniel Harrison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mammoth HospitalMammoth Lakes, CA · Critical Access Hospital · CCN 051303
- Northern Inyo HospitalBishop, CA · Critical Access Hospital · CCN 051324
- Palomar Health Downtown CampusEscondido, CA · Acute Care Hospital · CCN 050115
Practice locations
Addresses where Daniel Harrison is enrolled with Medicare (CMS data updated 2026-10-02).
- 15615 Pomerado RdPoway, CA 92064 (310) 379‑2134
- 2185 Citracado PkwyEscondido, CA 92029 (310) 379‑2134
- 85 Sierra Park RdMammoth Lakes, CA 93546 (760) 934‑3311
Group practices
Medicare enrollment lists Daniel Harrison as a member of these groups (CMS data updated 2026-10-02).
- Graybill Medical Group Inc104 clinicians in the group
- Southern Mono Health Care District100 clinicians in the group
- Palomar Hospitalist Medical Group Inc53 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Poway
Clinicians with the same Medicare primary specialty in Poway, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629098884 |
| 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