Quick answers
- Which hospitals does Matthew E. Sitzer work at?
- Medicare's official clinician data lists Matthew E. Sitzer at 1 hospital: Barton Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew E. Sitzer see patients?
- Medicare's clinician data lists 5 practice locations, including South Lake Tahoe, CA, San Marcos, CA and San Diego, CA. Call before your visit to confirm the address.
- What is Matthew E. Sitzer's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Matthew E. Sitzer accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew E. Sitzer 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 Matthew E. Sitzer?
- (530) 543-5711, as listed in official Medicare / NPI Registry data.
- What is Matthew E. Sitzer's NPI number?
- 1871641860. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew E. Sitzer works
Medicare's Facility Affiliation Data lists Matthew E. Sitzer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barton Memorial HospitalSouth Lake Tahoe, CA · Acute Care Hospital · CCN 050352
Practice locations
Addresses where Matthew E. Sitzer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2175 S AveSouth Lake Tahoe, CA 96150 (530) 543‑5711
- 360 Rush DrSan Marcos, CA 92078 (833) 574‑2273
- 4647 Zion AveSan Diego, CA 92120 (619) 528‑5000
- 4650 Palm AveSan Diego, CA 92154 (619) 528‑5000
- 5893 Copley DrSan Diego, CA 92111 (858) 616‑5499
Group practices
Medicare enrollment lists Matthew E. Sitzer as a member of these groups (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
- Barton Medical Foundation105 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors 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 California, San Diego School Of Medicine |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871641860 |
| 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