Quick answers
- Does Gustavo A. Mondragon accept Medicare assignment?
- Yes. Medicare's clinician data says Gustavo A. Mondragon 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 Gustavo A. Mondragon see?
- In 2024, CMS data shows 148 Original Medicare patients and 1,113 services for Gustavo A. Mondragon. This counts Original Medicare only and measures volume, not quality.
- What is Gustavo A. Mondragon's NPI number?
- 1619080041. 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 Gustavo A. Mondragon, 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 | 148 |
|---|---|
| Services billed to Medicare | 1,113 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)403 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)368 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)69 services
- Heart muscle strain imaging (93356)69 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)31 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%
- Diabetes75%
- Ischemic heart disease60%
- Arthritis52%
- Heart failure45%
Hospitals where Gustavo A. Mondragon works
Medicare's Facility Affiliation Data lists Gustavo A. Mondragon 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.
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
Practice locations
Addresses where Gustavo A. Mondragon is enrolled with Medicare (CMS data updated October 2, 2026).
- 480 4th Ave, Suite 500Chula Vista, CA 91910
- 855 3rd Ave, Suite 2230Chula Vista, CA 91911 (619) 656‑5252
Group practices
Medicare enrollment lists Gustavo A. Mondragon as a member of this group (CMS data updated October 2, 2026).
- Gustavo a Mondragon M D A Medical Corporation2 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Chula Vista
Clinicians with the same Medicare primary specialty in Chula Vista, CA — not a recommendation.
Other clinicians in Gustavo a Mondragon M D A Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1971 (55 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619080041 |
| 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