Doctor profile · Federal record
Dr. Betty Ahn, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Pasadena, CA
- NPI 1902862089
- Accepts Medicare
- 26 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 W California Blvd
Pasadena, CA 911053010
(626) 397-3445
fax (626) 397-5643 - Mailing address
-
Po Box 60259
Los Angeles, CA 900600259
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- June 5, 2008
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A77991
- Medicaid
- CA #00A779910
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902862089. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
534
Distinct HCPCS
5
Medicare allowed
$87,097
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 265 | 256 | $183 | |
99284 |
Emergency department visit with moderate level of medical decision making | 130 | 128 | $126 | |
99291 |
Critical care, first 30-74 minutes | 86 | 84 | $225 | |
99283 |
Emergency department visit with low level of medical decision making | 37 | 36 | $75 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 16 | 16 | $9 |
In context: peer comparison
Among 18 peers in Pasadena Emergency Medicine Physician, average services per provider: 68. This provider delivers 7.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
190
Patients
190
Total drug cost
$1,044
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Naproxen | Generic | 56 | 56 | $215 |
| Tramadol Hcl | Generic | 28 | 28 | $56 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 25 | 25 | $371 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 19 | 19 | $88 |
| Ondansetron Odt (Ondansetron) | Brand | 19 | 19 | $91 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 17 | 17 | $82 |
| Prednisone | Generic | 14 | 14 | $26 |
| Cephalexin | Generic | 12 | 12 | $115 |
Frequently asked questions
What is Dr. Betty Ahn's medical specialty?
Dr. Betty Ahn practices Emergency Medicine Physician in Pasadena, CA.
Where does Dr. Betty Ahn practice?
Dr. Betty Ahn practices at 100 W California Blvd, Pasadena, CA 911053010. Office phone: 6263973445.
What is Dr. Betty Ahn's NPI?
Dr. Betty Ahn's National Provider Identifier (NPI) is 1902862089, issued by NPPES.
Does Dr. Betty Ahn accept Medicare assignment?
Yes. Dr. Betty Ahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Betty Ahn commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.