Alexander Yoo-Ahng Koh, D.D.S.
Periodontics · Riverside, CA
Alexander Yoo-Ahng Koh, D.D.S. is a periodontics with a practice address in Riverside, California, and NPI 1154531267, issued on May 23, 2007. Check the license (California 40164, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexander Yoo-Ahng Koh
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 40164 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6860 Brockton Ave Ste 4, Riverside, CA 92506
- Phone
- (951) 686-5852
- Enumerated
- May 23, 2007
- Record last updated
- Jan 13, 2022
- Fax
- (951) 686-5853
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Verify Alexander Yoo-Ahng Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 40164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average periodontics in 2024
224 Medicare Part D claims for 61 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin84 claims
- Chlorhexidine Gluconate66 claims
- Ibuprofen47 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.
Alexander Yoo-Ahng Koh among 929 periodontics records in California
Alexander Yoo-Ahng Koh, D.D.S. is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 29% of them.
- NPI issued2007 · 29% of these records are older, 40% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2022 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California.
All 929 in California → Every provider in Riverside → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Denine Rice, D.D.S., M.S.Riverside, CA 925061851314504
- David Ludwig, DDSRiverside, CA 925041861568099
- Willfred Rathburn, DDSRiverside, CA 925031407954746
- Amita Rastogi, DMDHemet, CA 925431558694729
- Clifford Chan, DMD, PHDHemet, CA 925441184643876
- Mohamed Hassan, D.D.S, M.SMoreno Valley, CA 925531548365067
- Stephen Kallaos, DDSMoreno Valley, CA 925531649349879
- Bobby Soleiman, DDSMurrieta, CA 925621497863534
Common questions
What is Alexander Yoo-Ahng Koh, D.D.S.'s NPI number?
Alexander Yoo-Ahng Koh, D.D.S.'s National Provider Identifier (NPI) is 1154531267, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Yoo-Ahng Koh, D.D.S. located?
The NPPES record lists a practice address at 6860 Brockton Ave Ste 4, Riverside, CA, 92506. Phone: (951) 686-5852. Providers update this record themselves, so call before visiting.
How can I verify Alexander Yoo-Ahng Koh, D.D.S.'s license?
NPPES lists California license number 40164, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alexander Yoo-Ahng Koh, D.D.S. prescribe under Medicare Part D?
In 2024, Alexander Yoo-Ahng Koh, D.D.S. had 224 Medicare Part D claims for 61 beneficiaries; the average among periodontics prescribers was 277. 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.