Quick answers
- Does Cynthia S. Tan accept Medicare assignment?
- Yes. Medicare's clinician data says Cynthia S. Tan 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 Cynthia S. Tan see?
- In 2024, CMS data shows 4,637 Original Medicare patients and 57,608 services for Cynthia S. Tan. This counts Original Medicare only and measures volume, not quality.
- What is Cynthia S. Tan's NPI number?
- 1982846135. 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 Cynthia S. Tan, 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 | 4,637 |
|---|---|
| Services billed to Medicare | 57,608 |
| Different services or procedures | 197 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)32,334 services
- Injection, gadobutrol, 0.1 ml (A9585)18,286 services
- X-ray of chest, 1 view (71045)618 services
- Screening mammography (77067)539 services
- Screening 3d breast mammography (77063)533 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 cholesterol73%
- Arthritis52%
- Diabetes38%
- Chronic kidney disease30%
- Ischemic heart disease25%
Hospitals where Cynthia S. Tan works
Medicare's Facility Affiliation Data lists Cynthia S. Tan 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.
- El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050380
- Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050038
- Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523
- Sutter Solano Medical CenterVallejo, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050101
Practice locations
Addresses where Cynthia S. Tan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1002 Nut Tree RdVacaville, CA 95687 (707) 646‑4646
- 101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
- 1020 Nut Tree Rd, Suite 150Vacaville, CA 95687 (559) 455‑4065
- 1100 B Gale Wilson BlvdFairfield, CA 94533 (707) 646‑4646
- 1101 B Gale Wilson Blvd, Suite 100Fairfield, CA 94533 (707) 646‑4646
Group practices
Medicare enrollment lists Cynthia S. Tan as a member of these groups (CMS data updated October 2, 2026).
- County of Santa Clara1,022 clinicians in the group
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- Bay Imaging Consultants Medical Group Inc146 clinicians in the group
- Solano Diagnostics Partners a Calif Limited Partnership45 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Vacaville
Clinicians with the same Medicare primary specialty in Vacaville, CA — not a recommendation.
Other clinicians in County of Santa Clara
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982846135 |
| 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