Dr. An T. Phan, MD
Anesthesiology (Anesthesiology Physician)
- Medicare participating
At a glance
- In the NPI registry since
- 2010
- Medicare patients seen, 2024
- 171
Licensed in California since 2014, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2010Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Anesthesiology Physician primary
CA license A132573 (first issued 2014; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare patients and services
- Medicare patients, 2024
- 171
- Services billed
- 200
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Anesthesia for other procedure on large bowel using an endoscope | 53 | 53 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 26 | 25 |
| Anesthesia for exam of colon using an endoscope | 16 | 15 |
| Anesthesia for procedure on small and large bowel using an endoscope | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $17.68 in total to this clinician.
| Vertex Pharmaceuticals Incorporated | $17.68 |
|---|
| Food and Beverage | $17.68 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.