Doctor profile · Federal record
Dr. James Zimmerman, M.D.
Vascular Surgery Physician (CMS: Vascular Surgery) · Diagnostic Radiology Physician · Vascular & Interventional Radiology Physician · Orthopaedic Surgery Physician · Redwood City, CA
- NPI 1093729121
- Accepts Medicare
- 51 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2900 Whipple Ave, Suite 225
Redwood City, CA 940622851
(650) 366-0225
fax (650) 367-6085 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- May 28, 2020
- Year of graduation
- 1975 — 51 yrs since
- Specialty taxonomy
- 2086S0129X — NUCC code
- State license (1)
- California #G39110
- Medicaid (2)
- CA #00G391100 · CA #GR0052800
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093729121. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,717
Distinct HCPCS
10
Medicare allowed
$294,407
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 423 | 296 | $107 | |
93922 |
Ultrasound study of arm and leg arteries | 164 | 134 | $88 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 120 | 104 | $151 | |
93926 |
Ultrasound of one leg arteries or artery grafts | 99 | 80 | $166 | |
93990 |
Ultrasound of hemodialysis access | 95 | 41 | $171 | |
93925 |
Ultrasound of leg arteries or artery grafts | 94 | 83 | $322 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 83 | 83 | $133 | |
93880 |
Ultrasound of both sides of head and neck blood flow | 71 | 66 | $250 | |
76937 |
Ultrasonic guidance for blood vessel access | 70 | 58 | $15 | |
75710 |
Review by radiologist of arm or leg artery image | 54 | 44 | $89 |
In context: peer comparison
Among 1 peers in Redwood City Vascular Surgery Physician, average services per provider: 52. This provider delivers 33× the peer median.Open Payments
Industry payments received
All-time total
$1,674
Transactions
14
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Penumbra, INC. | 9 | $1,100.24 | |
| W. L. Gore & Associates, INC. | 2 | $281.21 | |
| Medtronic, INC. | 2 | $228.69 | |
| Philips North America LLC | 1 | $64.02 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
212
Patients
138
Total drug cost
$2,503
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 83 | 30 | $1,573 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 55 | 44 | $423 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 53 | 48 | $374 |
| Cephalexin | Generic | 21 | 16 | $133 |
Hospital affiliations
Frequently asked questions
What is Dr. James Zimmerman's medical specialty?
Dr. James Zimmerman practices Vascular Surgery Physician in Redwood City, CA.
Where does Dr. James Zimmerman practice?
Dr. James Zimmerman practices at 2900 Whipple Ave, Redwood City, CA 940622851. Office phone: 6503660225.
What is Dr. James Zimmerman's NPI?
Dr. James Zimmerman's National Provider Identifier (NPI) is 1093729121, issued by NPPES.
Does Dr. James Zimmerman accept Medicare assignment?
Yes. Dr. James Zimmerman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Zimmerman commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Ultrasound study of arm and leg arteries (HCPCS 93922); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.