Quick answers
- Does Angela S. Giese accept Medicare assignment?
- Yes. Medicare's clinician data says Angela S. Giese 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 Angela S. Giese see?
- In 2024, CMS data shows 478 Original Medicare patients and 740 services for Angela S. Giese. This counts Original Medicare only and measures volume, not quality.
- What is Angela S. Giese's NPI number?
- 1003266701. 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 Angela S. Giese, 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 | 478 |
|---|---|
| Services billed to Medicare | 740 |
| Different services or procedures | 83 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Ultrasound study of arm or leg veins with compression and maneuvers (93970)104 services
- Ultrasound study of arm and leg arteries (93922)96 services
- Ultrasound study of one arm or leg veins with compression and maneuvers (93971)92 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)62 services
- Ultrasound of both sides of head and neck blood flow (93880)42 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 blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease51%
- Diabetes46%
- Chronic kidney disease46%
Hospitals where Angela S. Giese works
Medicare's Facility Affiliation Data lists Angela S. Giese 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.
- NorthBay Medical CenterFairfield, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050367
- Oroville HospitalOroville, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050030
- University of California Davis Medical CenterSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050599
Practice locations
Addresses where Angela S. Giese is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Nut Tree RdVacaville, CA 95687 (707) 624‑7000
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 1860 Pennsylvania AveFairfield, CA 94533 (707) 646‑4114
- 2221 Stockton BlvdSacramento, CA 95817 (916) 734‑3761
- 3250 Beard RdNapa, CA 94558 (707) 646‑4180
Group practices
Medicare enrollment lists Angela S. Giese as a member of these groups (CMS data updated October 2, 2026).
- Regents of the Univ of Ca1,584 clinicians in the group
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- NorthBay Health Medical Foundation213 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in Vacaville
Clinicians with the same Medicare primary specialty in Vacaville, CA — not a recommendation.
Other clinicians in Regents of the Univ of Ca
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1003266701 |
| 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