Quick answers
- Does Kristine Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Kristine Nguyen 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 Kristine Nguyen see?
- In 2024, CMS data shows 270 Original Medicare patients and 1,994 services for Kristine Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Kristine Nguyen's NPI number?
- 1902461189. 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 Kristine Nguyen, 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 | 270 |
|---|---|
| Services billed to Medicare | 1,994 |
| Different services or procedures | 71 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)426 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)280 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)230 services
- Destruction of skin growth, 1-14 growths (17110)170 services
- Destruction of precancer skin growth, 1 growth (17000)132 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 cholesterol75%
- High blood pressure74%
- Arthritis45%
- Diabetes34%
- Chronic kidney disease28%
- Ischemic heart disease26%
Hospitals where Kristine Nguyen works
Medicare's Facility Affiliation Data lists Kristine Nguyen 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.
- Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195
Practice locations
Addresses where Kristine Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 18988 Cox Ave, Suite BSaratoga, CA 95070 (408) 253‑4407
- 39210 State StFremont, CA 94538 (510) 790‑0477
- 501 S Shore Ctr W, Suite 103aAlameda, CA 94501 (510) 227‑7028
- 603 S Knickerbocker DrSunnyvale, CA 94087 (408) 736‑0441
Group practices
Medicare enrollment lists Kristine Nguyen as a member of this group (CMS data updated October 2, 2026).
- Csi Medical Group111 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Saratoga
Clinicians with the same Medicare primary specialty in Saratoga, CA — not a recommendation.
Other clinicians in Csi Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Touro Un College Of Osteopathic Medicine, Vallejo |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902461189 |
| 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