Quick answers
- Does Rainier A. Manzanilla accept Medicare assignment?
- Medicare's clinician data says Rainier A. Manzanilla may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Rainier A. Manzanilla see?
- In 2024, CMS data shows 135 Original Medicare patients and 458 services for Rainier A. Manzanilla. This counts Original Medicare only and measures volume, not quality.
- What is Rainier A. Manzanilla's NPI number?
- 1316026974. 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 Rainier A. Manzanilla, 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 | 135 |
|---|---|
| Services billed to Medicare | 458 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)330 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)52 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)31 services
- Critical care, first 30-74 minutes (99291)20 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)13 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%
- Heart failure75%
- Ischemic heart disease72%
- Chronic kidney disease70%
Hospitals where Rainier A. Manzanilla works
Medicare's Facility Affiliation Data lists Rainier A. Manzanilla 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.
- Adventist Health White MemorialLos Angeles, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050103
Practice locations
Addresses where Rainier A. Manzanilla is enrolled with Medicare (CMS data updated October 2, 2026).
- 1701 E Cesar E Chavez Ave, Suite 125Los Angeles, CA 90033 (323) 987‑8787
Group practices
Medicare enrollment lists Rainier A. Manzanilla as a member of this group (CMS data updated October 2, 2026).
- East Los Angeles Cardiology Medical Group Inc3 clinicians in the group
Specialties
Find other Interventional Cardiology doctors in California →
Other interventional cardiologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in East Los Angeles Cardiology Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1316026974 |
| 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