Doctor profile · Federal record
Dr. May Chen, MD
Medical Oncology Physician (CMS: Medical Oncology) · Campbell, CA
- NPI 1386603447
- Accepts Medicare
- 33 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
50 E Hamilton Ave, Ste 200
Campbell, CA 95008
(408) 376-2300
fax (408) 376-2316
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- October 22, 2007
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- California #G83884
- Medicaid
- CA #00G838840
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1386603447. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,224
Distinct HCPCS
9
Medicare allowed
$132,614
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 464 | 321 | $75 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 432 | 243 | $111 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 105 | 41 | $135 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 82 | 82 | $203 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 37 | 19 | $55 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 33 | $196 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 31 | 28 | $161 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 29 | 29 | $151 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 11 | 11 | $111 |
In context: peer comparison
Among 1 peers in Campbell Medical Oncology Physician, average services per provider: 136. This provider delivers 9.0× the peer median.Open Payments
Industry payments received
All-time total
$155
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 1 | $128.77 | |
| Bayer Healthcare Pharmaceuticals INC. | 1 | $26.23 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
364
Patients
134
Total drug cost
$32,270
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Hcl | Generic | 69 | 38 | $415 |
| Prochlorperazine Maleate | Generic | 65 | 40 | $646 |
| Anastrozole | Generic | 54 | 26 | $1,359 |
| Letrozole | Generic | 30 | 12 | $838 |
| Eliquis (Apixaban) | Brand | 25 | 0 | $24,562 |
| Lorazepam | Generic | 23 | 18 | $133 |
| Dexamethasone | Generic | 18 | 0 | $554 |
| Prednisone | Generic | 16 | 0 | $130 |
| Alendronate Sodium | Generic | 14 | 0 | $204 |
| Exemestane | Generic | 14 | 0 | $2,910 |
Hospital affiliations
Frequently asked questions
What is Dr. May Chen's medical specialty?
Dr. May Chen practices Medical Oncology Physician in Campbell, CA.
Where does Dr. May Chen practice?
Dr. May Chen practices at 50 E Hamilton Ave, Campbell, CA 95008. Office phone: 4083762300.
What is Dr. May Chen's NPI?
Dr. May Chen's National Provider Identifier (NPI) is 1386603447, issued by NPPES.
Does Dr. May Chen accept Medicare assignment?
Yes. Dr. May Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. May Chen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.