Doctor profile · Federal record
Dr. Karen Hsu, MD
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Orange, CA
- NPI 1659733459
- Accepts Medicare
- 10 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2501 E Chapman Ave Ste 201-202
Orange, CA 928693204
(714) 282-1892 - Additional location
-
350 E 17Th St, 9Bh26
New York, NY 100033805
(212) 420-4548
fax (212) 420-2980
Credentials & registration
- NPI registered
- March 2016 — 10 yrs on file
- Profile last updated
- December 1, 2020
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- California #A170534
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659733459. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
41
Distinct HCPCS
3
Medicare allowed
$4,600
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 16 | 16 | $42 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 13 | 13 | $176 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 12 | 11 | $137 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 19. This provider delivers 2.2× the peer median.Open Payments
Industry payments received
All-time total
$979
Transactions
5
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| INTUITIVE SURGICAL, INC. | 5 | $979.42 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
44
Patients
25
Total drug cost
$3,275
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clobetasol Propionate | Generic | 23 | 12 | $703 |
| Estradiol | Generic | 21 | 13 | $2,572 |
Frequently asked questions
What is Dr. Karen Hsu's medical specialty?
Dr. Karen Hsu practices Obstetrics & Gynecology Physician in Orange, CA.
Where does Dr. Karen Hsu practice?
Dr. Karen Hsu practices at 2501 E Chapman Ave Ste 201-202, Orange, CA 928693204. Office phone: 7142821892.
What is Dr. Karen Hsu's NPI?
Dr. Karen Hsu's National Provider Identifier (NPI) is 1659733459, issued by NPPES.
Does Dr. Karen Hsu accept Medicare assignment?
Yes. Dr. Karen Hsu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Hsu commonly perform?
Top Medicare-reported procedures in 2023: Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.