Kyu D. Ahn, M.D.
Internal Medicine Physician · Pomona, CA
Kyu D. Ahn, M.D. is an internal medicine physician with a practice address in Pomona, California, and NPI 1427015593, issued on May 1, 2006. Check the license (California A35299, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kyu D. Ahn
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A35299 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1902 Royalty Dr, Pomona, CA 91767
- Phone
- (909) 620-0389
- Enumerated
- May 1, 2006
- Record last updated
- May 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (909) 623-3911
- Medicaid ID
- 00A352990 CA
- Medicare enrollment
- Enrolled (PECOS I20060124000964); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1902 Royalty Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chelsea Gladue, SLPSpeech-Language Pathologist1508189630
- Bernie Goler, M.D.Diagnostic Radiology Physician1285693101
- Rochelle Gunnarsson, DPTPhysical Therapist1063797835
Verify Kyu D. Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A35299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average internal medicine physician in 2024
12,076 Medicare Part D claims for 569 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 51 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,065 claims
- Amlodipine Besylate759 claims
- Vascepa623 claims
- Losartan Potassium532 claims
- Metformin Hcl Er361 claims
- Metformin Hcl296 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: $226.08
10 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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.
Kyu D. Ahn among 17,696 internal medicine physician records in California
Kyu D. Ahn, 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 fileYes · 63% of these records are
- Graduated1977 · median 2004 among the 11,065 with a school on file
- 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).
37 internal medicine physician records list a practice address in Pomona
They are 37 of the 5,102 NPPES records with a practice address in Pomona, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Pomona → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Samir Anabi, M.D.Pomona, CA 917671790893857
- Kenneth Brown, MDPomona, CA 917671003817537
- Lisa ButlerPomona, CA 917671003885302
- Sarah Cadman, M.D.Pomona, CA 917671427003490
- Jagtar Dhadwal, MDPomona, CA 917671801865563
- Redemption Geronimo, MDPomona, CA 917671497723803
- Jarnail Gugga, M.D.Pomona, CA 917671598769846
- Veronique Hourany, M.D.Pomona, CA 917671669551826
Common questions
What is Kyu D. Ahn, M.D.'s NPI number?
Kyu D. Ahn, M.D.'s National Provider Identifier (NPI) is 1427015593, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kyu D. Ahn, M.D. located?
The NPPES record lists a practice address at 1902 Royalty Dr, Pomona, CA, 91767. Phone: (909) 620-0389. Providers update this record themselves, so call before visiting.
How can I verify Kyu D. Ahn, M.D.'s license?
NPPES lists California license number A35299, 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 Kyu D. Ahn, M.D. prescribe under Medicare Part D?
In 2024, Kyu D. Ahn, M.D. had 12,076 Medicare Part D claims for 569 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.