Doctor profile · Federal record
Dr. Lorien Ahn, MD
Internal Medicine Physician (CMS: Internal Medicine) · Santa Monica, CA
- NPI 1033542683
- Accepts Medicare
- 9 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2336 Santa Monica Blvd Ste 301
Santa Monica, CA 904042067
(310) 998-9118 - Mailing address
-
5767 W Century Blvd Ste 400
Los Angeles, CA 900455631
Credentials & registration
- NPI registered
- August 2013 — 13 yrs on file
- Profile last updated
- June 30, 2025
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A159674
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033542683. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
214
Distinct HCPCS
7
Medicare allowed
$34,271
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 110 | 68 | $191 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 31 | 31 | $233 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 17 | $130 | |
G0008 |
Administration of influenza virus vaccine | 16 | 16 | $33 | |
90662 |
Influenza vaccine split virus, preservative free | 15 | 15 | $72 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 13 | 11 | $7 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $177 |
In context: peer comparison
Among 58 peers in Santa Monica Internal Medicine Physician, average services per provider: 97. This provider delivers 2.2× the peer median.Open Payments
Industry payments received
All-time total
$121
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 2 | $33.83 | |
| Novo Nordisk INC | 2 | $29.02 | |
| Abbvie INC. | 1 | $20.00 | |
| Exact Sciences Corporation | 1 | $19.73 | |
| Lilly USA, LLC | 1 | $18.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
427
Patients
119
Total drug cost
$49,838
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 67 | 31 | $1,588 |
| Levothyroxine Sodium | Generic | 58 | 28 | $885 |
| Amlodipine Besylate | Generic | 38 | 17 | $530 |
| Gabapentin | Generic | 35 | 16 | $625 |
| Losartan Potassium | Generic | 33 | 16 | $693 |
| Eliquis (Apixaban) | Brand | 29 | 0 | $26,221 |
| Lisinopril | Generic | 21 | 0 | $245 |
| Trazodone Hcl | Generic | 21 | 0 | $268 |
| Omeprazole | Generic | 20 | 0 | $500 |
| Diclofenac Sodium | Generic | 19 | 0 | $572 |
Frequently asked questions
What is Dr. Lorien Ahn's medical specialty?
Dr. Lorien Ahn practices Internal Medicine Physician in Santa Monica, CA.
Where does Dr. Lorien Ahn practice?
Dr. Lorien Ahn practices at 2336 Santa Monica Blvd Ste 301, Santa Monica, CA 904042067. Office phone: 3109989118.
What is Dr. Lorien Ahn's NPI?
Dr. Lorien Ahn's National Provider Identifier (NPI) is 1033542683, issued by NPPES.
Does Dr. Lorien Ahn accept Medicare assignment?
Yes. Dr. Lorien Ahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lorien Ahn commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99205); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.