Doctor profile · Federal record
Dr. Brad Zwahlen, M.D.
Specialist (CMS: Orthopedic Surgery) · Berkeley, CA
- NPI 1508878406
- Accepts Medicare
- MIPS 84.9 / 100 · 2023
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2999 Regent St, #225
Berkeley, CA 947052190
(510) 704-7760
fax (510) 704-7765
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- January 8, 2014
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 174400000X — NUCC code
- State license (1)
- California #A78633
- Medicaid
- CA #00A786330
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508878406. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,484
Distinct HCPCS
10
Medicare allowed
$128,156
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 460 | 59 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 311 | 224 | $151 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 188 | 137 | $107 | |
20611 |
Aspiration and/or injection of fluid large joint using ultrasound guidance | 136 | 68 | $136 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 125 | 125 | $194 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 68 | 68 | $132 | |
73560 |
X-ray of knee, 1-2 views | 57 | 42 | $45 | |
73030 |
X-ray of shoulder, minimum of 2 views | 51 | 41 | $45 | |
73565 |
X-ray of both knees while standing | 32 | 31 | $53 | |
97110 |
Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | 22 | 21 | $36 |
In context: peer comparison
Among 2 peers in Berkeley Specialist, average services per provider: 475. This provider delivers 3.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
137
Patients
61
Total drug cost
$1,837
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 60 | 46 | $435 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 26 | 15 | $222 |
| Celecoxib | Generic | 22 | 0 | $700 |
| Amoxicillin | Generic | 17 | 0 | $19 |
| Diclofenac Sodium | Generic | 12 | 0 | $460 |
Hospital affiliations
Frequently asked questions
What is Dr. Brad Zwahlen's medical specialty?
Dr. Brad Zwahlen practices Specialist in Berkeley, CA.
Where does Dr. Brad Zwahlen practice?
Dr. Brad Zwahlen practices at 2999 Regent St, Berkeley, CA 947052190. Office phone: 5107047760.
What is Dr. Brad Zwahlen's NPI?
Dr. Brad Zwahlen's National Provider Identifier (NPI) is 1508878406, issued by NPPES.
Does Dr. Brad Zwahlen accept Medicare assignment?
Yes. Dr. Brad Zwahlen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brad Zwahlen commonly perform?
Top Medicare-reported procedures in 2023: Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.