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

NPPES Updated May 11, 2026
Primary practice
2100 Napa Vallejo Hwy.
Napa, CA 945586293
(707) 253-5000
fax (408) 730-0548

Credentials & registration

NPPES · NUCC
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

OIG LEIE Updated May 11, 2026

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

CMS Provider Utilization
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

Auto-generated from federal data
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.