Quick answers
- Does Katherine Sarasas accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine Sarasas 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.
- How many Medicare patients does Katherine Sarasas see?
- In 2024, CMS data shows 254 Original Medicare patients and 260 services for Katherine Sarasas. This counts Original Medicare only and measures volume, not quality.
- What is Katherine Sarasas's NPI number?
- 1689948051. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Katherine Sarasas, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 254 |
|---|---|
| Services billed to Medicare | 260 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)93 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)42 services
- Anesthesia for procedure on eyelid (00103)39 services
- Anesthesia for procedure on small and large bowel using an endoscope (00813)30 services
- Anesthesia for exam of colon using an endoscope (00812)22 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol70%
- High blood pressure61%
- Arthritis31%
- Diabetes30%
- Osteoporosis22%
- Chronic kidney disease19%
Hospitals where Katherine Sarasas works
Medicare's Facility Affiliation Data lists Katherine Sarasas 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.
- Highland HospitalOakland, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050320
Practice locations
Addresses where Katherine Sarasas is enrolled with Medicare (CMS data updated October 2, 2026).
- 1411 E 31st StOakland, CA 94602 (510) 437‑4800
- 1700 San Pablo Ave, Suite DPinole, CA 94564 (510) 724‑9500
- 300 Frank Ogawa Plaza, Suite 135Oakland, CA 94612 (510) 893‑1600
- 429 Llywelyn BlvdCampbell, CA 95008 (408) 364‑1616
Group practices
Medicare enrollment lists Katherine Sarasas as a member of these groups (CMS data updated October 2, 2026).
- Alameda Health System601 clinicians in the group
- Mai Nursing Anesthesia PC35 clinicians in the group
- Amsurg Oakland Anesthesia LP9 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), California →
Other nurse anesthetists in Oakland
Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.
Other clinicians in Alameda Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689948051 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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