David Taehyung Ahn, MD
Endocrinology, Diabetes & Metabolism Physician · Newport Beach, CA
David Taehyung Ahn, MD is an endocrinology, diabetes & metabolism physician with a practice address in Newport Beach, California, and NPI 1184949570, issued on Mar 29, 2010. Check the license (California A117662, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Taehyung Ahn
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A117662 CA
Self-reported in NPPES; status is on the state search - Practice location
- 520 Superior Ave Ste 150, Newport Beach, CA 92663
- Phone
- (949) 764-7366
- Enumerated
- Mar 29, 2010
- Record last updated
- Sep 25, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (949) 642-7703
- Medicare enrollment
- Enrolled (PECOS I20150629001684); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 520 Superior Ave Ste 150
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kris Iyer, M.D.Endocrinology, Diabetes & Metabolism Physician1366535684
- Julia MurphyMedical Physician Assistant1619566726
- Kelly Taylor, NURSE PRACTITIONERNurse Practitioner1124578992
- Amanda Tran, PHARMDAmbulatory Care Pharmacist1992390272
- Diana Zhao, MDInternal Medicine Physician1295199768
Verify David Taehyung Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A117662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,143 Medicare Part D claims for 254 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Ozempic147 claims
- Mounjaro90 claims
- Metformin Hcl Er63 claims
- Nano 2nd Gen Pen Needle56 claims
- Farxiga48 claims
- Jardiance42 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.
The MIPS final score for 2023 (Medicare payment program): 97.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $142,299.54
234 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Bills Medicare through one group practice
- David Ahn MD IncNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Taehyung Ahn among 1,131 endocrinology, diabetes & metabolism physician records in California
David Taehyung Ahn, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 68% of them.
- NPI issued2010 · 68% of these records are older, 28% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2003 among the 779 with a school on file
- Record last updated2018 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Newport Beach → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Alireza AmirpourNewport Beach, CA 926631275997900
- Duc Do, M.D.Newport Beach, CA 926631336136951
- Jonathan Huang, MDNewport Beach, CA 926631740749852
- Kris Iyer, M.D.Newport Beach, CA 926631366535684
- Sandra Kwak, M.D.Newport Beach, CA 926631316011364
- Daniel Nadeau, MDNewport Beach, CA 926631215902226
- Farzana Naqvi, M.D.Newport Beach, CA 926631588734743
- Sean Nikravan, MDNewport Beach, CA 926631558357319
Common questions
What is David Taehyung Ahn, MD's NPI number?
David Taehyung Ahn, MD's National Provider Identifier (NPI) is 1184949570, issued on Mar 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is David Taehyung Ahn, MD located?
The NPPES record lists a practice address at 520 Superior Ave Ste 150, Newport Beach, CA, 92663. Phone: (949) 764-7366. Providers update this record themselves, so call before visiting.
How can I verify David Taehyung Ahn, MD's license?
NPPES lists California license number A117662, 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 David Taehyung Ahn, MD prescribe under Medicare Part D?
In 2024, David Taehyung Ahn, MD had 1,143 Medicare Part D claims for 254 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is David Taehyung Ahn, MD's MIPS final score?
The 2023 MIPS final score is 97.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.