Quick answers
- Does Cynthia S. Santillan accept Medicare assignment?
- Yes. Medicare's clinician data says Cynthia S. Santillan 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. Santillan see?
- In 2024, CMS data shows 1,690 Original Medicare patients and 4,865 services for Cynthia S. Santillan. This counts Original Medicare only and measures volume, not quality.
- What is Cynthia S. Santillan's NPI number?
- 1932132404. 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. Santillan, 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 | 1,690 |
|---|---|
| Services billed to Medicare | 4,865 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, gadobutrol, 0.1 ml (A9585)2,695 services
- Ct scan of abdomen and pelvis with contrast (74177)553 services
- X-ray of abdomen, 1 view (74018)270 services
- Mri scan of abdomen before and after contrast (74183)134 services
- Complete ultrasound scan behind abdominal cavity (76770)111 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%
- Arthritis48%
- Diabetes36%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)36%
- Chronic kidney disease35%
Hospitals where Cynthia S. Santillan works
Medicare's Facility Affiliation Data lists Cynthia S. Santillan 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.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
- Imperial Valley Health - El Centro HospitalEl Centro, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050045
- Scripps Memorial Hospital La JollaLa Jolla, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050324
- UC San Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050025
Practice locations
Addresses where Cynthia S. Santillan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 14; the Medicare profile lists all.
- 1200 Garden View Rd, Suite 210Encinitas, CA 92024 (800) 926‑8273
- 1415 Ross AveEl Centro, CA 92243 (800) 926‑8273
- 16950 Via TazonSan Diego, CA 92127 (800) 926‑8273
- 200 W Arbor DrSan Diego, CA 92103
- 3855 Health Sciences DrLa Jolla, CA 92093 (800) 926‑8273
Group practices
Medicare enrollment lists Cynthia S. Santillan as a member of this group (CMS data updated October 2, 2026).
- Regents of the University of California2,089 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Encinitas
Clinicians with the same Medicare primary specialty in Encinitas, CA — not a recommendation.
Other clinicians in Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932132404 |
| 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