Sienna Victoria Titen, M.D.
NPI 1760745038ActiveIndividual· Obstetrics & Gynecology· Santa Cruz, CA
Obstetrics & Gynecology (M.D.) with Southern Mono Health Care District, practicing in Santa Cruz, California. 58 Medicare patients in 2024, $17,808 paid; nearly all of their 183 Part D prescriptions were generic (90%). Intuitive Surgical, Inc. reported $42.93 in payments in 2025, mostly food and beverage. Lists Dominican Hospital as a hospital affiliation.
Overview
| NPI | 1760745038 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 20, 2012 |
| Last updated in NPPES | Oct 1, 2026 |
| Certified by provider | Oct 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | A128806 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 58 |
|---|---|
| Services billed | 135 across 18 procedure codes |
| Paid by Medicare | $17,808 |
Part D prescriptions in 2024
| Prescriptions (claims) | 183 · 254 30-day fills |
|---|---|
| Patients | 50 |
| Total drug cost | $6,808 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Southern Mono Health Care DistrictMammoth Lakes, CA · 100 clinicians
Hospital affiliation
- Dominican HospitalSanta Cruz, CA
Industry payments (Open Payments)
- 2025$42.93 · 1 payment from 1 company
- 2024$2,013 · 7 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $42.93 | 1 |
What the 2025 payments were for
- Food and Beverage$42.93 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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