Quick answers
- Does Tess T. Wianecki accept Medicare assignment?
- Yes. Medicare's clinician data says Tess T. Wianecki accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Tess T. Wianecki's NPI number?
- 1881112449. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tess T. Wianecki works
Medicare's Facility Affiliation Data lists Tess T. Wianecki at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050107
Practice locations
Addresses where Tess T. Wianecki is enrolled with Medicare (CMS data updated October 2, 2026).
- 860 Oak Park Blvd, Suite 101Arroyo Grande, CA 93420 (805) 202‑8245
Group practices
Medicare enrollment lists Tess T. Wianecki as a member of this group (CMS data updated October 2, 2026).
- Pacific Shores Dermatology and Skin Cancer Institute2 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Arroyo Grande
Clinicians with the same Medicare primary specialty in Arroyo Grande, CA — not a recommendation.
Other clinicians in Pacific Shores Dermatology and Skin Cancer Institute
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881112449 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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