Lorien Sunhye Ahn, MD
Internal Medicine Physician · Santa Monica, CA
Lorien Sunhye Ahn, MD is an internal medicine physician with a practice address in Santa Monica, California, and NPI 1033542683, issued on Aug 19, 2013. Check the license (California A159674, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lorien Sunhye Ahn
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A159674 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2336 Santa Monica Blvd Ste 301, Santa Monica, CA 90404
- Phone
- (310) 998-9118
- Enumerated
- Aug 19, 2013
- Record last updated
- Jun 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20230117002098); accepts Medicare assignment
- Medical or professional school
- Mercer University School Of Medicine, 2017
- Entity
- Type 1 · individual
Also registered at 2336 Santa Monica Blvd Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lorien Sunhye Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159674Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,272 Medicare Part D claims for 179 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Atorvastatin Calcium115 claims
- Levothyroxine Sodium70 claims
- Losartan Potassium57 claims
- Gabapentin49 claims
- Rosuvastatin Calcium49 claims
- Amlodipine Besylate42 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: $120.67
7 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. 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.
Bills Medicare through one group practice
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
168 internal medicine physician records list a practice address in Santa Monica
They are 168 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,696 internal medicine physician records in California.
All 168 in Santa Monica → All 17,696 in California → Every provider in Santa Monica →
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- Luba Abascal, MDSan Francisco, CA1023180874
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Common questions
What is Lorien Sunhye Ahn, MD's NPI number?
Lorien Sunhye Ahn, MD's National Provider Identifier (NPI) is 1033542683, issued on Aug 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Lorien Sunhye Ahn, MD located?
The NPPES record lists a practice address at 2336 Santa Monica Blvd Ste 301, Santa Monica, CA, 90404. Phone: (310) 998-9118. Providers update this record themselves, so call before visiting.
How can I verify Lorien Sunhye Ahn, MD's license?
NPPES lists California license number A159674, 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 Lorien Sunhye Ahn, MD prescribe under Medicare Part D?
In 2024, Lorien Sunhye Ahn, MD had 1,272 Medicare Part D claims for 179 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.