Lan Ngoc Quang, M.D.
Internal Medicine Physician · Stockton, CA
Lan Ngoc Quang, M.D. is an internal medicine physician with a practice address in Stockton, California, and NPI 1437354347, issued on Jun 19, 2007. Check the license (California A111373, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lan Ngoc Quang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A111373 CA
MT191351 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1525 N EL Dorado St, Stockton, CA 95204
- Phone
- (209) 465-5107
- Enumerated
- Jun 19, 2007
- Record last updated
- Feb 2, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120802000656); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Lan Ngoc Quang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A111373Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,564 Medicare Part D claims for 412 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium200 claims
- Jardiance191 claims
- Furosemide182 claims
- Farxiga178 claims
- Amlodipine Besylate175 claims
- Metformin Hcl100 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.
Industry payments in 2024: $3,424.61
165 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Lan Ngoc Quang among 17,696 internal medicine physician records in California
Lan Ngoc Quang, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 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).
89 internal medicine physician records list a practice address in Stockton
They are 89 of the 9,522 NPPES records with a practice address in Stockton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Stockton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tanveer Bajwa, M.D.Stockton, CA 952041871871681
- Cecelia Blawie, MDStockton, CA 952041245261742
- Richard Camacho, MDStockton, CA 952041649253881
- Dorothy Do-Williams, M.D.Stockton, CA 952041215237631
- Nivedita Doshi, M.D.Stockton, CA 952041417301987
- Aziz Kamali, M.D.Stockton, CA 952041306923883
- Mrinmayee Naik, M.D.Stockton, CA 952041639559081
- Sundar Natarajan, M.D.Stockton, CA 952041588794085
Common questions
What is Lan Ngoc Quang, M.D.'s NPI number?
Lan Ngoc Quang, M.D.'s National Provider Identifier (NPI) is 1437354347, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lan Ngoc Quang, M.D. located?
The NPPES record lists a practice address at 1525 N EL Dorado St, Stockton, CA, 95204. Phone: (209) 465-5107. Providers update this record themselves, so call before visiting.
How can I verify Lan Ngoc Quang, M.D.'s license?
NPPES lists California license number A111373, 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 Lan Ngoc Quang, M.D. prescribe under Medicare Part D?
In 2024, Lan Ngoc Quang, M.D. had 2,564 Medicare Part D claims for 412 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.