Doctor profile · Federal record
Dr. Benjamin Tsai, M.D.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Berkeley, CA
- NPI 1841533502
- Accepts Medicare
- 13 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2450 Ashby Ave
Berkeley, CA 947052067
(510) 204-4444 - Additional location
-
4647 Zion Ave, Kaiser Permanente San Diego - Hospital Medicine
San Diego, CA 921202507
(619) 528-5435 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- February 17, 2021
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- California #A132840 · California #1841533502
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841533502. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
845
Distinct HCPCS
6
Medicare allowed
$116,538
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 558 | 215 | $135 | |
99239 |
Hospital discharge day management, more than 30 minutes | 159 | 158 | $132 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 44 | $197 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 39 | 18 | $90 | |
99291 |
Critical care, first 30-74 minutes | 29 | 27 | $237 | |
99497 |
Advance care planning, first 30 minutes | 16 | 12 | $86 |
In context: peer comparison
Among 16 peers in this city , average services per provider: 93. This provider delivers 9.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
42
Patients
41
Total drug cost
$409
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 20 | 19 | $188 |
| Amlodipine Besylate | Generic | 11 | 11 | $99 |
| Metoprolol Succinate | Generic | 11 | 11 | $121 |
Hospital affiliations
Frequently asked questions
What is Dr. Benjamin Tsai's medical specialty?
Dr. Benjamin Tsai practices Hospitalist Physician in Berkeley, CA.
Where does Dr. Benjamin Tsai practice?
Dr. Benjamin Tsai practices at 2450 Ashby Ave, Berkeley, CA 947052067. Office phone: 5102044444.
What is Dr. Benjamin Tsai's NPI?
Dr. Benjamin Tsai's National Provider Identifier (NPI) is 1841533502, issued by NPPES.
Does Dr. Benjamin Tsai accept Medicare assignment?
Yes. Dr. Benjamin Tsai accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Benjamin Tsai commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.