Doctor profile · Federal record
Dr. Karen Chee, M.D.
Hematology & Oncology Physician (CMS: Medical Oncology) · San Mateo, CA
- NPI 1487637310
- Accepts Medicare
- 25 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
218 de Anza Blvd
San Mateo, CA 944023913
(650) 341-9131
fax (650) 341-9135
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- June 2, 2011
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #A81314
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487637310. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
19,922
Distinct HCPCS
10
Medicare allowed
$359,911
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
Q0138 |
Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 11,220 | 11 | $0 | |
J2405 |
Injection, ondansetron hydrochloride, per 1 mg | 1,592 | 26 | $0 | |
J0640 |
Injection, leucovorin calcium, per 50 mg | 1,320 | 12 | $4 | |
J9190 |
Injection, fluorouracil, 500 mg | 957 | 12 | $2 | |
J7030 |
Infusion, normal saline solution , 1000 cc | 752 | 64 | $2 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 628 | 246 | $152 | |
96375 |
Injection of additional new drug or substance into vein | 526 | 34 | $20 | |
J7060 |
5% dextrose/water (500 ml = 1 unit) | 447 | 28 | $2 | |
96372 |
Injection of drug or substance under skin or into muscle | 446 | 35 | $17 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 387 | 48 | $175 |
In context: peer comparison
Among 2 peers in San Mateo Hematology & Oncology Physician, average services per provider: 858. This provider delivers 23× the peer median.Open Payments
Industry payments received
All-time total
$478
Transactions
5
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 2 | $151.34 | |
| Ipsen Biopharmaceuticals, INC | 1 | $150.38 | |
| Celgene Corporation | 1 | $100.87 | |
| Secura Bio, INC. | 1 | $75.70 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
497
Patients
112
Total drug cost
$1,267,215
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acyclovir | Generic | 61 | 20 | $1,649 |
| Eliquis (Apixaban) | Brand | 48 | 0 | $36,369 |
| Jakafi (Ruxolitinib Phosphate) | Brand | 48 | 0 | $646,517 |
| Hydroxyurea | Generic | 42 | 14 | $1,764 |
| Ondansetron Hcl | Generic | 42 | 32 | $648 |
| Prochlorperazine Maleate | Generic | 42 | 32 | $842 |
| Xarelto (Rivaroxaban) | Brand | 41 | 0 | $37,712 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 38 | 0 | $341 |
| Ibrance (Palbociclib) | Brand | 25 | 0 | $368,347 |
| Anastrozole | Generic | 24 | 0 | $932 |
Hospital affiliations
Frequently asked questions
What is Dr. Karen Chee's medical specialty?
Dr. Karen Chee practices Hematology & Oncology Physician in San Mateo, CA.
Where does Dr. Karen Chee practice?
Dr. Karen Chee practices at 218 de Anza Blvd, San Mateo, CA 944023913. Office phone: 6503419131.
What is Dr. Karen Chee's NPI?
Dr. Karen Chee's National Provider Identifier (NPI) is 1487637310, issued by NPPES.
Does Dr. Karen Chee accept Medicare assignment?
Yes. Dr. Karen Chee accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Chee commonly perform?
Top Medicare-reported procedures in 2023: Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (HCPCS Q0138); Injection, ondansetron hydrochloride, per 1 mg (HCPCS J2405); Injection, leucovorin calcium, per 50 mg (HCPCS J0640). Source: CMS Medicare Physician & Other Practitioners file.