Quick answers
- Which hospitals does John L. Otis work at?
- Medicare's official clinician data lists John L. Otis at 1 hospital: Grossmont Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John L. Otis see patients?
- Medicare's clinician data lists 4 practice locations, including El Cajon, CA, La Mesa, CA and San Diego, CA. Call before your visit to confirm the address.
- What is John L. Otis's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does John L. Otis accept Medicare assignment?
- Yes. Medicare's clinician data says John L. Otis 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 John L. Otis offer telehealth?
- Medicare's clinician data says John L. Otis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John L. Otis?
- (619) 579-8745, as listed in official Medicare / NPI Registry data.
- What is John L. Otis's NPI number?
- 1235154535. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John L. Otis works
Medicare's Facility Affiliation Data lists John L. Otis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · CCN 050026
Practice locations
Addresses where John L. Otis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1679 E Main St, Suite 205El Cajon, CA 92021 (619) 579‑8745
- 5555 Grossmont Ctr DrLa Mesa, CA 91942 (619) 740‑6000
- 7901 Frost StSan Diego, CA 92123 (858) 939‑3400
- 8950 Villa La Jolla Dr, Suite A215La Jolla, CA 92037 (858) 457‑2180
Group practices
Medicare enrollment lists John L. Otis as a member of this group (CMS data updated 2026-10-02).
- Emergency and Acute Care Medical Corporation422 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in El Cajon
Clinicians with the same Medicare primary specialty in El Cajon, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 1971 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1235154535 |
| 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