Quy Nguyen Lam, MD
Internal Medicine Physician · Houston, TX
Quy Nguyen Lam, MD is an internal medicine physician with a practice address in Houston, Texas, and NPI 1649809724, issued on Apr 2, 2020. Check the license (Texas U2547, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Quy Nguyen Lam
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- U2547 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4101 Greenbriar Dr Ste 122G, Houston, TX 77098
- Phone
- (713) 980-5461
- Enumerated
- Apr 2, 2020
- Record last updated
- Aug 22, 2023
- Medicare enrollment
- Enrolled (PECOS I20231028000215); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2020
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 4101 Greenbriar Dr Ste 122G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jocelyn Antony, MDInternal Medicine Physician1588169049
- Christine Dang, MDInternal Medicine Physician1689251357
- Muhammad Khan, MDInternal Medicine Physician1609363498
- Anushree Kumar, M.D.Internal Medicine Physician1790070894
Verify Quy Nguyen Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license U2547Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
473 Medicare Part D claims for 206 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Cefdinir28 claims
- Pantoprazole Sodium28 claims
- Nifedipine Er15 claims
- Furosemide14 claims
- Prednisone14 claims
- Levofloxacin12 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
- Medical Center Hospitalist Associates PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Quy Nguyen Lam among 9,175 internal medicine physician records in Texas
Quy Nguyen Lam, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2020 · median 2004 among the 6,088 with a school on file
- Record last updated2023 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jocelyn Antony, MDHouston, TX 770981588169049
- Gordon Crofoot, MDHouston, TX 770981730381005
- Christine Dang, MDHouston, TX 770981689251357
- Jay Davis, M.D.Houston, TX 770981215096649
- Muhammad Khan, MDHouston, TX 770981609363498
- Anushree Kumar, M.D.Houston, TX 770981790070894
- Sanila Rana, M.D.Houston, TX 770981063499549
- Kaveh Samani, MDHouston, TX 770981720118458
Common questions
What is Quy Nguyen Lam, MD's NPI number?
Quy Nguyen Lam, MD's National Provider Identifier (NPI) is 1649809724, issued on Apr 2, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Quy Nguyen Lam, MD located?
The NPPES record lists a practice address at 4101 Greenbriar Dr Ste 122G, Houston, TX, 77098. Phone: (713) 980-5461. Providers update this record themselves, so call before visiting.
How can I verify Quy Nguyen Lam, MD's license?
NPPES lists Texas license number U2547, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Quy Nguyen Lam, MD prescribe under Medicare Part D?
In 2024, Quy Nguyen Lam, MD had 473 Medicare Part D claims for 206 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.