Dong Doan To, M.D.
Internal Medicine Physician · Los Angeles, CA
Dong Doan To, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1215369459, issued on Jul 30, 2013. Check the license (California A124715, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dong Doan To
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A124715 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1701 E Cesar E Chavez Ave, Los Angeles, CA 90033
- Phone
- (323) 987-1309
- Enumerated
- Jul 30, 2013
- Record last updated
- Jan 14, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1701 E Cesar E Chavez Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dong Doan To in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124715Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
426 Medicare Part D claims for 70 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium45 claims
- Gabapentin25 claims
- Losartan Potassium24 claims
- Amlodipine Besylate21 claims
- Metformin Hcl20 claims
- Tamsulosin Hcl16 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: $88.23
3 payments; by number, the most common kind was food and beverage; the largest payer was Recordati_rare_diseases_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.
Dong Doan To among 17,696 internal medicine physician records in California
Dong Doan To, 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 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).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ron Ben-Ari, M.D.Los Angeles, CA 900331275562431
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- Bharat Chaudry, M.D.Los Angeles, CA 900331194754374
- William Hardy, M.D.Los Angeles, CA 900331760410518
- Howard Hodis, M.D.Los Angeles, CA 900331407894009
- Eric Hsieh, M.D.Los Angeles, CA 900331811941974
- Jenny Hwang, M.D.Los Angeles, CA 900331578548764
- Michael Karp, M.D.Los Angeles, CA 900331336177229
Common questions
What is Dong Doan To, M.D.'s NPI number?
Dong Doan To, M.D.'s National Provider Identifier (NPI) is 1215369459, issued on Jul 30, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Dong Doan To, M.D. located?
The NPPES record lists a practice address at 1701 E Cesar E Chavez Ave, Los Angeles, CA, 90033. Phone: (323) 987-1309. Providers update this record themselves, so call before visiting.
How can I verify Dong Doan To, M.D.'s license?
NPPES lists California license number A124715, 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 Dong Doan To, M.D. prescribe under Medicare Part D?
In 2024, Dong Doan To, M.D. had 426 Medicare Part D claims for 70 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.