Doctor profile · Federal record

Dr. Sandi Woo, PA-C

Medical Physician Assistant (CMS: Physician Assistant) · Castro Valley, CA

  • NPI 1225103161
  • Accepts Medicare
  • 20 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
20126 Stanton Ave #100
Castro Valley, CA 945465367
(510) 537-3556
fax (510) 537-3610
Mailing address
2855 Mitchell Dr Ste 223
Walnut Creek, CA 945981609

Credentials & registration

NPPES · NUCC
NPI registered
November 2006 — 20 yrs on file
Profile last updated
July 1, 2010
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
363AM0700X — NUCC code
State license (1)
California #PA18589

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1225103161. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
150
Distinct HCPCS
2
Medicare allowed
$18,373
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 138 129 $128
93288 Evaluation of single, dual, multiple lead or leadless pacemaker system 12 12 $62

In context: peer comparison

Among 1 peers in this city , average services per provider: 75. This provider delivers 2.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$679
Transactions
9
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
Boehringer Ingelheim Pharmaceuticals, Inc. 2 $234.07
Edwards Lifesciences Corporation 2 $184.25
Medtronic, Inc. 2 $170.84
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) 1 $45.05
iRhythm Technologies, Inc. 1 $23.68
Abbott Laboratories 1 $20.88

By nature of payment

Food and Beverage
$679

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,834
Patients
904
Total drug cost
$410,663
Drug Type Claims Patients Total cost
Metoprolol Succinate Generic 253 142 $5,427
Atorvastatin Calcium Generic 239 111 $3,537
Eliquis (Apixaban) Brand 239 99 $244,789
Carvedilol Generic 155 79 $2,277
Xarelto (Rivaroxaban) Brand 122 55 $140,259
Amlodipine Besylate Generic 113 58 $1,175
Lisinopril Generic 112 48 $1,177
Furosemide Generic 101 55 $670
Losartan Potassium Generic 97 47 $1,915
Clopidogrel (Clopidogrel Bisulfate) Brand 80 34 $1,506

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sandi Woo's medical specialty?
Dr. Sandi Woo practices Medical Physician Assistant in Castro Valley, CA.
Where does Dr. Sandi Woo practice?
Dr. Sandi Woo practices at 20126 Stanton Ave #100, Castro Valley, CA 945465367. Office phone: 5105373556.
What is Dr. Sandi Woo's NPI?
Dr. Sandi Woo's National Provider Identifier (NPI) is 1225103161, issued by NPPES.
Does Dr. Sandi Woo accept Medicare assignment?
Yes. Dr. Sandi Woo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sandi Woo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Evaluation of single, dual, multiple lead or leadless pacemaker system (HCPCS 93288). Source: CMS Medicare Physician & Other Practitioners file.