Doctor profile · Federal record
Dr. Tom Nguyen, M.D.
Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Walnut Creek, CA
- NPI 1144269382
- Accepts Medicare
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1220 Rossmoor Pkwy
Walnut Creek, CA 945952501
(925) 947-3393
fax (925) 947-3396 - Mailing address
-
Dept 34929, P.O. 39000
San Francisco, CA 941390001
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- June 21, 2012
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A87794
- Medicaid
- CA #00A877940
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144269382. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
719
Distinct HCPCS
4
Medicare allowed
$78,611
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 319 | 112 | $83 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 263 | 104 | $126 | |
99239 |
Hospital discharge day management, more than 30 minutes | 96 | 91 | $121 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 41 | 41 | $184 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 150. This provider delivers 4.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
40
Patients
23
Total drug cost
$8,541
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 15 | 12 | $8,253 |
| Metoprolol Succinate | Generic | 14 | 11 | $240 |
| Furosemide | Generic | 11 | 0 | $48 |
Hospital affiliations
Frequently asked questions
What is Dr. Tom Nguyen's medical specialty?
Dr. Tom Nguyen practices Hospitalist Physician in Walnut Creek, CA.
Where does Dr. Tom Nguyen practice?
Dr. Tom Nguyen practices at 1220 Rossmoor Pkwy, Walnut Creek, CA 945952501. Office phone: 9259473393.
What is Dr. Tom Nguyen's NPI?
Dr. Tom Nguyen's National Provider Identifier (NPI) is 1144269382, issued by NPPES.
Does Dr. Tom Nguyen accept Medicare assignment?
Yes. Dr. Tom Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tom Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.