John-Khoa Do, D.O.
Internal Medicine Physician · Downey, CA
John-Khoa Do, D.O. is an internal medicine physician with a practice address in Downey, California, and NPI 1710908223, issued on Jul 21, 2006. Check the license (California 20A8905, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John-Khoa Do
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A8905 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10000 Lakewood Blvd, Downey, CA 90240
- Phone
- (562) 862-3684
- Enumerated
- Jul 21, 2006
- Record last updated
- Aug 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (562) 741-4479
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10000 Lakewood Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristy Alston, FNP-CFamily Nurse Practitioner1801110234
- Sameer Amin, MDInternal Medicine Physician1326164633
- Jose Anguiano, M.D.Internal Medicine Physician1841637576
- Rachel Aragon, NPNurse Practitioner1285785725
- Miri Chang, FNP-BCFamily Nurse Practitioner1851610158
- Sepideh Chegini, M.D.Internal Medicine Physician1871547075
Verify John-Khoa Do in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,640 Medicare Part D claims for 800 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 55 claims were for opioids.
Most prescribed
- Atorvastatin Calcium652 claims
- Losartan Potassium360 claims
- Hydralazine Hcl291 claims
- Amlodipine Besylate269 claims
- Metformin Hcl237 claims
- Gabapentin222 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: $173.73
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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.
John-Khoa Do among 17,696 internal medicine physician records in California
John-Khoa Do, D.O. 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 updated2019 · 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
- Sameer Amin, MDDowney, CA 902401326164633
- Jose Anguiano, M.D.Downey, CA 902401841637576
- Hassan Chahine, MDDowney, CA 902401518326933
- Sepideh Chegini, M.D.Downey, CA 902401871547075
- Stanley Crittenden, M.D.Downey, CA 902401477764678
- Paul Gallardo, MDDowney, CA 902401740392588
- Sachin Jain, MDDowney, CA 902401750540183
- Wang Ji, M.D.Downey, CA 902401215253059
Common questions
What is John-Khoa Do, D.O.'s NPI number?
John-Khoa Do, D.O.'s National Provider Identifier (NPI) is 1710908223, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John-Khoa Do, D.O. located?
The NPPES record lists a practice address at 10000 Lakewood Blvd, Downey, CA, 90240. Phone: (562) 862-3684. Providers update this record themselves, so call before visiting.
How can I verify John-Khoa Do, D.O.'s license?
NPPES lists California license number 20A8905, 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 John-Khoa Do, D.O. prescribe under Medicare Part D?
In 2024, John-Khoa Do, D.O. had 7,640 Medicare Part D claims for 800 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.