Quick answers
- Which hospitals does Sienna V. Titen work at?
- Medicare's official clinician data lists Sienna V. Titen at 1 hospital: Dominican Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sienna V. Titen see patients?
- Medicare's clinician data lists 1 practice location in Mammoth Lakes, CA. Call before your visit to confirm the address.
- What is Sienna V. Titen's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Sienna V. Titen accept Medicare assignment?
- Yes. Medicare's clinician data says Sienna V. Titen 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 Sienna V. Titen's NPI number?
- 1760745038. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sienna V. Titen works
Medicare's Facility Affiliation Data lists Sienna V. Titen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Dominican HospitalSanta Cruz, CA · Acute Care Hospital · CCN 050242
Practice locations
Addresses where Sienna V. Titen is enrolled with Medicare (CMS data updated 2026-10-02).
- PO Box, Suite 660Mammoth Lakes, CA 93546
Group practices
Medicare enrollment lists Sienna V. Titen as a member of this group (CMS data updated 2026-10-02).
- Southern Mono Health Care District100 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Mammoth Lakes
Clinicians with the same Medicare primary specialty in Mammoth Lakes, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760745038 |
| 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