Henry D. Do, M.D.
Internal Medicine Physician · Downey, CA
Henry D. Do, M.D. is an internal medicine physician with a practice address in Downey, California, and NPI 1538115290, issued on May 25, 2006. Check the license (California A77453, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Henry D. Do
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A77453 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11525 Brookshire Ave, Downey, CA 90241
- Phone
- (562) 862-3684
- Enumerated
- May 25, 2006
- Record last updated
- Jul 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (562) 862-7145
- Medicaid ID
- 00A774530 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Henry D. Do in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A77453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
12 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Henry D. Do among 17,696 internal medicine physician records in California
Henry D. Do, 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 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 fileNo · 63% of these records are
- Record last updated2011 · 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).
114 internal medicine physician records list a practice address in Downey
They are 114 of the 3,607 NPPES records with a practice address in Downey, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Downey → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nazar Al-Bussam, MDDowney, CA 902411003999145
- Domingo Barrientos, M.D.Downey, CA 902411184685281
- Arthur Carrasco, M.D.Downey, CA 902411588601595
- Shahryar Davari, MDDowney, CA 902411346244373
- Alan Frischer, M.D.Downey, CA 902411982701454
- Narayana Gunda, M.D.Downey, CA 902411720026271
- Vinod Patel, M.D.Downey, CA 902411043226756
- Leonard Rawson, M.D.Downey, CA 902411700830304
Common questions
What is Henry D. Do, M.D.'s NPI number?
Henry D. Do, M.D.'s National Provider Identifier (NPI) is 1538115290, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Henry D. Do, M.D. located?
The NPPES record lists a practice address at 11525 Brookshire Ave, Downey, CA, 90241. Phone: (562) 862-3684. Providers update this record themselves, so call before visiting.
How can I verify Henry D. Do, M.D.'s license?
NPPES lists California license number A77453, 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 Henry D. Do, M.D. prescribe under Medicare Part D?
In 2024, Henry D. Do, M.D. had 12 Medicare Part D claims; 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.