Doctor profile · Federal record
Dr. Ashley Chang, PA-C
Physician Assistant · Surgical Physician Assistant · Stanford, CA
- NPI 1487289625
- Accepts Medicare
- MIPS 75.5 / 100 · 2023
- 6 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
300 Pasteur Dr
Stanford, CA 943052200
(650) 723-4000 - Additional location
-
1552 Coffee RD Ste 200
Modesto, CA 953553122
(209) 248-7168
fax (209) 846-9641 - Additional location
-
3 S Linden Ave
South San Francisco, CA 940806407
(650) 238-1500
Credentials & registration
- NPI registered
- March 2020 — 6 yrs on file
- Profile last updated
- December 23, 2025
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- California #57792
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1487289625. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
195
Distinct HCPCS
3
Medicare allowed
$23,003
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 128 | 85 | $94 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 46 | 46 | $174 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 21 | 20 | $139 |
In context: peer comparison
Among 89 peers in this city , average services per provider: 64. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$141
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 1 | $123.39 | |
| Ethicon US, LLC | 1 | $17.55 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
508
Patients
137
Total drug cost
$437,326
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ozempic (Semaglutide) | Brand | 277 | 68 | $347,086 |
| Naltrexone Hcl | Generic | 51 | 21 | $2,456 |
| Mounjaro (Tirzepatide) | Brand | 46 | 12 | $61,522 |
| Pantoprazole Sodium | Generic | 35 | 12 | $487 |
| Topiramate | Generic | 27 | 12 | $538 |
| Victoza 3-Pak (Liraglutide) | Brand | 21 | 0 | $24,046 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 20 | 0 | $279 |
| Bupropion Hcl Sr (Bupropion Hcl) | Brand | 18 | 0 | $798 |
| Ondansetron Odt (Ondansetron) | Brand | 13 | 12 | $114 |
Hospital affiliations
Frequently asked questions
What is Dr. Ashley Chang's medical specialty?
Dr. Ashley Chang practices Physician Assistant in Stanford, CA.
Where does Dr. Ashley Chang practice?
Dr. Ashley Chang practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Ashley Chang's NPI?
Dr. Ashley Chang's National Provider Identifier (NPI) is 1487289625, issued by NPPES.
Does Dr. Ashley Chang accept Medicare assignment?
Yes. Dr. Ashley Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ashley Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99205); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.