Doctor profile · Federal record
Dr. Anne Chen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Vacaville, CA
- NPI 1003852708
- Accepts Medicare
- 26 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
770 Mason St
Vacaville, CA 956884646
(707) 427-4900
fax (707) 454-5911 - Additional location
-
1127 Texas St, Suite A
Fairfield, CA 945335745
(707) 426-6060 - Mailing address
-
Po Box 255228
Sacramento, CA 958655228
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- September 30, 2025
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A83589
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003852708. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
402
Distinct HCPCS
6
Medicare allowed
$48,338
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 244 | 160 | $137 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 43 | 36 | $89 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 37 | 28 | $64 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 36 | 29 | $89 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 27 | 27 | $125 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 15 | 11 | $138 |
In context: peer comparison
Among 7 peers in Vacaville Internal Medicine Physician, average services per provider: 91. This provider delivers 4.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,653
Patients
842
Total drug cost
$53,404
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 330 | 113 | $5,405 |
| Amlodipine Besylate | Generic | 306 | 97 | $3,927 |
| Lisinopril | Generic | 277 | 77 | $2,723 |
| Levothyroxine Sodium | Generic | 205 | 49 | $3,741 |
| Metformin Hcl | Generic | 182 | 58 | $2,277 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 170 | 58 | $6,144 |
| Losartan Potassium | Generic | 165 | 57 | $2,885 |
| Simvastatin | Generic | 152 | 41 | $2,243 |
| Omeprazole | Generic | 148 | 50 | $4,449 |
| Gabapentin | Generic | 145 | 53 | $5,830 |
Hospital affiliations
Frequently asked questions
What is Dr. Anne Chen's medical specialty?
Dr. Anne Chen practices Internal Medicine Physician in Vacaville, CA.
Where does Dr. Anne Chen practice?
Dr. Anne Chen practices at 770 Mason St, Vacaville, CA 956884646. Office phone: 7074274900.
What is Dr. Anne Chen's NPI?
Dr. Anne Chen's National Provider Identifier (NPI) is 1003852708, issued by NPPES.
Does Dr. Anne Chen accept Medicare assignment?
Yes. Dr. Anne Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Anne Chen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Telephone medical discussion with physician (HCPCS 99441). Source: CMS Medicare Physician & Other Practitioners file.