Doctor profile · Federal record
Dr. Shirley Chan, NPC
Nurse Practitioner · Union City, CA
- NPI 1831387240
- Accepts Medicare
- MIPS 85.3 / 100 · 2023
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
33255 Ninth St
Union City, CA 94587
(510) 471-5880
fax (510) 471-9051
Credentials & registration
- NPI registered
- October 2007 — 19 yrs on file
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 363L00000X — NUCC code
- State license (1)
- California #NP16306
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831387240. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
398
Distinct HCPCS
7
Medicare allowed
$24,990
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 141 | 95 | $90 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 93 | 70 | $64 | |
G0008 |
Administration of influenza virus vaccine | 43 | 42 | $4 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 39 | 26 | $94 | |
90480 |
Admn sarscov2 vacc 1 dose | 35 | 35 | $26 | |
90662 |
Influenza vaccine split virus, preservative free | 34 | 33 | $0 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 13 | 12 | $127 |
In context: peer comparison
Among 1 peers in Union City Nurse Practitioner, average services per provider: 56. This provider delivers 7.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,019
Patients
342
Total drug cost
$30,208
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 231 | 74 | $7,552 |
| Losartan Potassium | Generic | 133 | 41 | $3,521 |
| Amlodipine Besylate | Generic | 105 | 41 | $2,987 |
| Metoprolol Succinate | Generic | 75 | 23 | $2,343 |
| Metformin Hcl | Generic | 71 | 22 | $1,566 |
| Levothyroxine Sodium | Generic | 66 | 19 | $1,815 |
| Hydrochlorothiazide | Generic | 56 | 17 | $274 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 49 | 15 | $2,258 |
| Diclofenac Sodium | Generic | 44 | 31 | $1,495 |
| Pantoprazole Sodium | Generic | 43 | 19 | $1,225 |
Hospital affiliations
Frequently asked questions
What is Dr. Shirley Chan's medical specialty?
Dr. Shirley Chan practices Nurse Practitioner in Union City, CA.
Where does Dr. Shirley Chan practice?
Dr. Shirley Chan practices at 33255 Ninth St, Union City, CA 94587. Office phone: 5104715880.
What is Dr. Shirley Chan's NPI?
Dr. Shirley Chan's National Provider Identifier (NPI) is 1831387240, issued by NPPES.
Does Dr. Shirley Chan accept Medicare assignment?
Yes. Dr. Shirley Chan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Shirley Chan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Telephone medical discussion with physician (HCPCS 99442); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.