Nathaniel Leong, M.D.
Family Medicine Physician · San Pedro, CA
Nathaniel Leong, M.D. is a family medicine physician with a practice address in San Pedro, California, and NPI 1326396664, issued on Aug 16, 2012. Check the license (California A122322, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Leong
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A122322 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1300 W 7TH St, San Pedro, CA 90732
- Phone
- (310) 832-3311
- Enumerated
- Aug 16, 2012
- Record last updated
- Jan 28, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131107000125); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1300 W 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Denise Brathwaite, M.D.Anesthesiology Physician1770524605
- Alessandra Conforto, M.D.Emergency Medicine Physician1982633160
Verify Nathaniel Leong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
237 Medicare Part D claims for 61 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Famotidine13 claims
- Levetiracetam13 claims
- Metoprolol Tartrate13 claims
- Baclofen12 claims
- Chlorhexidine Gluconate11 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
- Providence Medical InstituteTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Leong among 17,133 family medicine physician records in California
Nathaniel Leong, M.D. 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 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2010 · median 2005 among the 10,652 with a school on file
- Record last updated2014 · 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).
20 family medicine physician records list a practice address in San Pedro
They are 20 of the 1,072 NPPES records with a practice address in San Pedro, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Pedro → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Angel Angelow, M.D.San Pedro, CA 907321598711319
- Francisco Correa, M.D.San Pedro, CA 907321164580783
- Jaskaran Dhingsa, M.D.San Pedro, CA 907321356544407
- Lawrence Greenberg, M.D.San Pedro, CA 907321043348436
- Joel Holtz, MDSan Pedro, CA 907321497735849
- Sapna Krishnan, MDSan Pedro, CA 907321225527013
- Luis Magdaleno, MDSan Pedro, CA 907321164492013
- Daniel Placik, MDSan Pedro, CA 907321932690484
Common questions
What is Nathaniel Leong, M.D.'s NPI number?
Nathaniel Leong, M.D.'s National Provider Identifier (NPI) is 1326396664, issued on Aug 16, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Leong, M.D. located?
The NPPES record lists a practice address at 1300 W 7TH St, San Pedro, CA, 90732. Phone: (310) 832-3311. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Leong, M.D.'s license?
NPPES lists California license number A122322, 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 Nathaniel Leong, M.D. prescribe under Medicare Part D?
In 2024, Nathaniel Leong, M.D. had 237 Medicare Part D claims for 61 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.