Quick answers
- Which hospitals does Robert N. Keenan work at?
- Medicare's official clinician data lists Robert N. Keenan at 2 hospitals: Adventist Health Sonora and Barton Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert N. Keenan see patients?
- Medicare's clinician data lists 5 practice locations, including South Lake Tahoe, CA, Redlands, CA and Sonora, CA. Call before your visit to confirm the address.
- What is Robert N. Keenan's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Robert N. Keenan accept Medicare assignment?
- Yes. Medicare's clinician data says Robert N. Keenan 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 Robert N. Keenan?
- (530) 543-5691, as listed in official Medicare / NPI Registry data.
- What is Robert N. Keenan's NPI number?
- 1558325654. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert N. Keenan works
Medicare's Facility Affiliation Data lists Robert N. Keenan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health SonoraSonora, CA · Acute Care Hospital · CCN 050335
- Barton Memorial HospitalSouth Lake Tahoe, CA · Acute Care Hospital · CCN 050352
Practice locations
Addresses where Robert N. Keenan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1139 3rd StSouth Lake Tahoe, CA 96150 (530) 543‑5691
- 350 Terracina BlvdRedlands, CA 92373 (909) 335‑5500
- 375 Terracina Blvd, Suite BRedlands, CA 92373 (909) 279‑0070
- 729 Pauline CourtSonora, CA 95370 (209) 588‑8068
- 780 Delnero DrSonora, CA 95370 (209) 536‑8461
Group practices
Medicare enrollment lists Robert N. Keenan as a member of these groups (CMS data updated 2026-10-02).
- Adventist Health Physicians Network628 clinicians in the group
- Acute Care Surgery Medical Group Inc204 clinicians in the group
- Barton Medical Foundation105 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in South Lake Tahoe
Clinicians with the same Medicare primary specialty in South Lake Tahoe, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Southwestern Medical School At Dallas |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558325654 |
| 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