Doctor profile · Federal record
Dr. Yu-Wen Chang, DO
Family Medicine Physician (CMS: Family Practice) · Obesity Medicine (Family Medicine) Physician · Menlo Park, CA
- NPI 1598258154
- Accepts Medicare
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
321 Middlefield RD Ste 260
Menlo Park, CA 940254010
(650) 498-3522 - Additional location
-
1300 Crane St
Menlo Park, CA 940254260
(650) 498-6500 - Additional location
-
500 W Hospital RD
French Camp, CA 952319693
(209) 468-6937
fax (209) 468-7042
Credentials & registration
- NPI registered
- June 2018 — 8 yrs on file
- Profile last updated
- April 17, 2024
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- California #20A17804
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598258154. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
582
Distinct HCPCS
10
Medicare allowed
$85,047
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 193 | 107 | $151 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 56 | 56 | $283 | |
G0009 |
Administration of pneumococcal vaccine | 56 | 56 | $36 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 48 | 48 | $194 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 44 | 37 | $210 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 41 | 41 | $153 | |
G0008 |
Administration of influenza virus vaccine | 39 | 39 | $36 | |
90662 |
Influenza vaccine split virus, preservative free | 37 | 37 | $72 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 25 | 25 | $255 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 19 | $107 |
In context: peer comparison
Among 2 peers in Menlo Park Family Medicine Physician, average services per provider: 44. This provider delivers 13× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
395
Patients
108
Total drug cost
$6,601
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 88 | 38 | $1,340 |
| Amlodipine Besylate | Generic | 48 | 24 | $804 |
| Levothyroxine Sodium | Generic | 33 | 18 | $616 |
| Metformin Hcl | Generic | 32 | 13 | $476 |
| Losartan Potassium | Generic | 29 | 15 | $482 |
| Alendronate Sodium | Generic | 20 | 0 | $291 |
| Rosuvastatin Calcium | Generic | 20 | 0 | $381 |
| Simvastatin | Generic | 19 | 0 | $73 |
| Montelukast Sodium | Generic | 18 | 0 | $197 |
| Olmesartan Medoxomil | Generic | 17 | 0 | $345 |
Hospital affiliations
Frequently asked questions
What is Dr. Yu-Wen Chang's medical specialty?
Dr. Yu-Wen Chang practices Family Medicine Physician in Menlo Park, CA.
Where does Dr. Yu-Wen Chang practice?
Dr. Yu-Wen Chang practices at 321 Middlefield RD Ste 260, Menlo Park, CA 940254010. Office phone: 6504983522.
What is Dr. Yu-Wen Chang's NPI?
Dr. Yu-Wen Chang's National Provider Identifier (NPI) is 1598258154, issued by NPPES.
Does Dr. Yu-Wen Chang accept Medicare assignment?
Yes. Dr. Yu-Wen Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Yu-Wen Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (HCPCS 90677); Administration of pneumococcal vaccine (HCPCS G0009). Source: CMS Medicare Physician & Other Practitioners file.