NPPES file of Aug 9, 2026

Leonardo C. Quilang, MD

Family Medicine Physician · Huntington Park, CA

Leonardo C. Quilang, MD is a family medicine physician with a practice address in Huntington Park, California, and NPI 1588659197, issued on Sep 20, 2005. Check the license (California A49716, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588659197
Name
Leonardo C. Quilang
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A49716 CA
Self-reported in NPPES; status is on the state search
Practice location
6601 Rugby Ave, Huntington Park, CA 90255
Phone
(323) 582-1177
Enumerated
Sep 20, 2005
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(323) 589-2635
Medicare enrollment
Enrolled (PECOS I20110712000310); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 6601 Rugby Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Katherine Ayala, MSNFamily Nurse Practitioner1609795020
  2. Karla Castellanos, LMFTMarriage & Family Therapist1194368951
  3. Yessenia Gutierrez, PTPhysical Medicine & Rehabilitation Physician1912441643
  4. Denise Hernandez, NPFamily Nurse Practitioner1467290429
  5. Walfredo Iniguez, M.D.Pediatrics Physician1255441697
  6. Veronica Lomeli, NPNurse Practitioner1790415313

Verify Leonardo C. Quilang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A49716
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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16% fewer Medicare Part D claims than the average family medicine physician in 2024

2,965 Medicare Part D claims for 143 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Leonardo Quilang2,965
  2. Specialty average3,544

Most prescribed

  1. Amlodipine Besylate243 claims
  2. Atorvastatin Calcium206 claims
  3. Gabapentin131 claims
  4. Metformin Hcl119 claims
  5. Losartan Potassium110 claims
  6. Benazepril Hcl99 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. County OF Los AngelesEl Monte, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Leonardo C. Quilang among 17,133 family medicine physician records in California

Leonardo C. Quilang, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 94% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1978 · median 2005 among the 10,652 with a school on file
  • Record last updated2007 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

25 family medicine physician records list a practice address in Huntington Park

They are 25 of the 1,056 NPPES records with a practice address in Huntington Park, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Lucy Ahumada-Alba, P.A.-CHuntington Park, CA 902551033228028
  2. Graciela Calatayud, M.D.Huntington Park, CA 902551336252352
  3. Lulu Chen, MDHuntington Park, CA 902551609899863
  4. Bindu George, M.D.Huntington Park, CA 902551194790774
  5. Martin Kabongo, MD, APCHuntington Park, CA 902551033168810
  6. Sepehr Katiraie, M.D.Huntington Park, CA 902551225084213
  7. Richard Keech, M.D.Huntington Park, CA 902551487748364
  8. Mahfouz Michael, MDHuntington Park, CA 902551447369103

Common questions

What is Leonardo C. Quilang, MD's NPI number?

Leonardo C. Quilang, MD's National Provider Identifier (NPI) is 1588659197, issued on Sep 20, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Leonardo C. Quilang, MD located?

The NPPES record lists a practice address at 6601 Rugby Ave, Huntington Park, CA, 90255. Phone: (323) 582-1177. Providers update this record themselves, so call before visiting.

How can I verify Leonardo C. Quilang, MD's license?

NPPES lists California license number A49716, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Leonardo C. Quilang, MD prescribe under Medicare Part D?

In 2024, Leonardo C. Quilang, MD had 2,965 Medicare Part D claims for 143 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.