Melchor L. Ong, MD
Internal Medicine Physician · Clovis, CA
Melchor L. Ong, MD is an internal medicine physician with a practice address in Clovis, California, and NPI 1245318070, issued on Nov 1, 2006. Check the license (California C51542, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Melchor L. Ong
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C51542 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2071 Herndon Ave, Clovis, CA 93611
- Phone
- (559) 324-5100
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00C515420 CA
- Medicare enrollment
- Enrolled (PECOS I20050107000720); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2071 Herndon Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Melchor L. Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C51542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,984 Medicare Part D claims for 845 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 332 claims were for opioids.
Most prescribed
- Atorvastatin Calcium754 claims
- Amlodipine Besylate484 claims
- Levothyroxine Sodium411 claims
- Lisinopril286 claims
- Losartan Potassium256 claims
- Hydrocodone-Acetaminophen223 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
- Permanente Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melchor L. Ong among 17,696 internal medicine physician records in California
Melchor L. Ong, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 internal medicine physician records list a practice address in Clovis
They are 31 of the 1,871 NPPES records with a practice address in Clovis, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Clovis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Carl Ahroon, M.D.Clovis, CA 936111508913674
- Hardeep Chohan, MDClovis, CA 936111104904002
- San Gabriel, MDClovis, CA 936111922025857
- Mark Godiksen, M.D.Clovis, CA 936111760518245
- Patrick Kan, MDClovis, CA 936111538247036
- Ani Ketabgian, M.D.Clovis, CA 936111710902523
- Vinod Kumar, MDClovis, CA 936111063590974
- Angela Kuo, MDClovis, CA 936111952480097
Common questions
What is Melchor L. Ong, MD's NPI number?
Melchor L. Ong, MD's National Provider Identifier (NPI) is 1245318070, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Melchor L. Ong, MD located?
The NPPES record lists a practice address at 2071 Herndon Ave, Clovis, CA, 93611. Phone: (559) 324-5100. Providers update this record themselves, so call before visiting.
How can I verify Melchor L. Ong, MD's license?
NPPES lists California license number C51542, 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 Melchor L. Ong, MD prescribe under Medicare Part D?
In 2024, Melchor L. Ong, MD had 8,984 Medicare Part D claims for 845 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.