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Family Practice

Leonardo C. Quilang, MD

Works at hospitals in Los Angeles, CA · California

Summary

Dr. Leonardo C. Quilang, MD is a family doctor at 10953 Ramona Blvd, El Monte, CA 91731. Phone: (626) 434-2800. Accepts Medicare assignment. In 2024, Leonardo C. Quilang had 131 Original Medicare patients and 848 services. NPI 1588659197. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 10953 Ramona Blvd, El Monte, CA 91731 · Directions
  • Phone: (626) 434‑2800
  • Medicare: Accepts Medicare assignment
  • Hospital: Los Angeles General Medical Center
  • Group practice: County of Los Angeles
  • Medical school: graduated 1978 (48 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Leonardo C. Quilang, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Leonardo C. Quilang accept Medicare assignment?
Yes. Medicare's clinician data says Leonardo C. Quilang 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 Leonardo C. Quilang see?
In 2024, CMS data shows 131 Original Medicare patients and 848 services for Leonardo C. Quilang. This counts Original Medicare only and measures volume, not quality.
What is Leonardo C. Quilang's NPI number?
1588659197. 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 Leonardo C. Quilang, 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 patients131
Services billed to Medicare848
Different services or procedures73
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Insertion of needle into vein for collection of blood sample (36415)240 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)162 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)55 services
  4. Blood test, comprehensive group of blood chemicals (80053)32 services
  5. Screening mammography (77067)27 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%
  • Diabetes45%
  • Arthritis25%
  • Ischemic heart disease16%
  • Chronic kidney disease13%

Hospitals where Leonardo C. Quilang works

Medicare's Facility Affiliation Data lists Leonardo C. Quilang 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.

Practice locations

Addresses where Leonardo C. Quilang is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Leonardo C. Quilang as a member of this group (CMS data updated October 2, 2026).

  • County of Los Angeles397 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in El Monte

Clinicians with the same Medicare primary specialty in El Monte, CA — not a recommendation.

All family doctors in El Monte →

Other clinicians in County of Los Angeles

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1978 (48 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1588659197
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians