Doctor profile · Federal record
Dr. Chung-Ying Chen, MD
Internal Medicine Physician (CMS: Family Practice) · Pediatrics Physician · Sunnyvale, CA
- NPI 1457436081
- Accepts Medicare
- 27 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
401 Old San Francisco RD
Sunnyvale, CA 940866387
(408) 730-4262 - Mailing address
-
2350 W El Camino Real, 2Nd Floor
Mountain View, CA 940406201
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- November 28, 2011
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A94535
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457436081. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
180
Distinct HCPCS
5
Medicare allowed
$23,766
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 87 | 70 | $111 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 34 | 34 | $160 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 30 | 28 | $156 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 18 | 18 | $90 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 11 | 11 | $218 |
In context: peer comparison
Among 14 peers in Sunnyvale Internal Medicine Physician, average services per provider: 58. This provider delivers 3.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
390
Patients
38
Total drug cost
$10,624
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 53 | 14 | $597 |
| Metformin Hcl | Generic | 47 | 13 | $472 |
| Losartan Potassium | Generic | 44 | 11 | $506 |
| Alendronate Sodium | Generic | 33 | 0 | $735 |
| Atenolol | Generic | 31 | 0 | $402 |
| Lisinopril | Generic | 31 | 0 | $287 |
| Hydrochlorothiazide | Generic | 23 | 0 | $47 |
| Levothyroxine Sodium | Generic | 23 | 0 | $428 |
| Gabapentin | Generic | 19 | 0 | $575 |
| Amlodipine Besylate | Generic | 18 | 0 | $96 |
Frequently asked questions
What is Dr. Chung-Ying Chen's medical specialty?
Dr. Chung-Ying Chen practices Internal Medicine Physician in Sunnyvale, CA.
Where does Dr. Chung-Ying Chen practice?
Dr. Chung-Ying Chen practices at 401 Old San Francisco RD, Sunnyvale, CA 940866387. Office phone: 4087304262.
What is Dr. Chung-Ying Chen's NPI?
Dr. Chung-Ying Chen's National Provider Identifier (NPI) is 1457436081, issued by NPPES.
Does Dr. Chung-Ying Chen accept Medicare assignment?
Yes. Dr. Chung-Ying Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chung-Ying Chen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.