Edward Ko, M.D.
Internal Medicine Physician · Garden Grove, CA
Edward Ko, M.D. is an internal medicine physician with a practice address in Garden Grove, California, and NPI 1396911798, issued on May 6, 2008. Check the license (California A121697, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Edward Ko
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A121697 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12751 Harbor Blvd, Garden Grove, CA 92840
- Phone
- (888) 499-9303
- Enumerated
- May 6, 2008
- Record last updated
- Aug 14, 2017 (not updated in 9 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 12751 Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Edward Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121697Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,019 Medicare Part D claims for 231 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.
Most prescribed
- Atorvastatin Calcium236 claims
- Metformin Hcl155 claims
- Lisinopril103 claims
- Jardiance88 claims
- Amlodipine Besylate85 claims
- Levothyroxine Sodium82 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.
Edward Ko among 17,696 internal medicine physician records in California
Edward Ko, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
39 internal medicine physician records list a practice address in Garden Grove
They are 39 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Garden Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Negin Behazin, MDGarden Grove, CA 928401497076301
- Bryan Choi, MDGarden Grove, CA 928401255525499
- Danh Dan, M.D.Garden Grove, CA 928401790917631
- Adriana Longo, M.D.Garden Grove, CA 928401124004999
- Benjamin Navarro, M.D.Garden Grove, CA 928401033208608
- Tan Nguyen, M.D.Garden Grove, CA 928401609839299
- Tam Nguyen, M.D.Garden Grove, CA 928401720153182
- Nga Nguyen, M.D.Garden Grove, CA 928401346447984
Common questions
What is Edward Ko, M.D.'s NPI number?
Edward Ko, M.D.'s National Provider Identifier (NPI) is 1396911798, issued on May 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Edward Ko, M.D. located?
The NPPES record lists a practice address at 12751 Harbor Blvd, Garden Grove, CA, 92840. Phone: (888) 499-9303. Providers update this record themselves, so call before visiting.
How can I verify Edward Ko, M.D.'s license?
NPPES lists California license number A121697, 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 Edward Ko, M.D. prescribe under Medicare Part D?
In 2024, Edward Ko, M.D. had 2,019 Medicare Part D claims for 231 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.