Doctor profile · Federal record
Dr. Grace Ang, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Napa, CA
- NPI 1902990245
- Accepts Medicare
- 45 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2100 Napa Vallejo Hwy.
Napa, CA 945586293
(707) 253-5000
fax (408) 730-0548
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- April 2, 2019
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A68373
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902990245. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
13
Distinct HCPCS
1
Medicare allowed
$564
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99307 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 13 | 11 | $43 |
In context: peer comparison
Among 10 peers in Napa Internal Medicine Physician, average services per provider: 94. This provider delivers 0.1× the peer median.Frequently asked questions
What is Dr. Grace Ang's medical specialty?
Dr. Grace Ang practices Internal Medicine Physician in Napa, CA.
Where does Dr. Grace Ang practice?
Dr. Grace Ang practices at 2100 Napa Vallejo Hwy., Napa, CA 945586293. Office phone: 7072535000.
What is Dr. Grace Ang's NPI?
Dr. Grace Ang's National Provider Identifier (NPI) is 1902990245, issued by NPPES.
Does Dr. Grace Ang accept Medicare assignment?
Yes. Dr. Grace Ang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Grace Ang commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99307). Source: CMS Medicare Physician & Other Practitioners file.