Doctor profile · Federal record
Dr. Tam Nguyen, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · San Jose, CA
- NPI 1962520478
- 22 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 Jose Figueres Ave Ste 180
San Jose, CA 951161586
(408) 258-5083
fax (408) 258-4347 - Mailing address
-
4945 Palemetto Dunes CT
San Jose, CA 951382131
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- September 12, 2018
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #20A9636
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1962520478. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,173
Distinct HCPCS
10
Medicare allowed
$609,430
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 3,112 | 824 | $153 | |
99349 |
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 203 | 58 | $146 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 142 | 141 | $194 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 116 | 104 | $108 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 105 | 78 | $74 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 90 | 22 | $60 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 72 | 61 | $65 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 63 | 30 | $125 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 50 | 18 | $69 | |
G0179 |
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 45 | 25 | $52 |
In context: peer comparison
Among 94 peers in this city , average services per provider: 175. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$1,041
Transactions
48
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 14 | $259.01 | |
| ABBVIE INC. | 10 | $238.77 | |
| AstraZeneca Pharmaceuticals LP | 7 | $153.15 | |
| IRONWOOD PHARMACEUTICALS, INC | 3 | $71.69 | |
| PFIZER INC. | 3 | $70.58 | |
| SCILEX PHARMACEUTICALS INC. | 3 | $62.17 | |
| Lilly USA, LLC | 2 | $56.10 | |
| VIVUS LLC | 2 | $44.64 | |
| Sumitomo Pharma America, Inc. | 1 | $24.27 | |
| ABIOMED | 1 | $22.78 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 1 | $19.37 | |
| Boston Scientific Corporation | 1 | $18.04 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
11,528
Patients
4,075
Total drug cost
$296,906
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 1,429 | 474 | $38,538 |
| Losartan Potassium | Generic | 1,318 | 473 | $35,867 |
| Amlodipine Besylate | Generic | 1,003 | 342 | $22,583 |
| Baclofen | Generic | 880 | 353 | $17,049 |
| Diclofenac Sodium | Generic | 805 | 311 | $25,548 |
| Gabapentin | Generic | 776 | 268 | $18,757 |
| Triamcinolone Acetonide | Generic | 774 | 293 | $14,273 |
| Metoprolol Succinate | Generic | 768 | 256 | $21,941 |
| Omeprazole | Generic | 687 | 268 | $15,489 |
| Metformin Hcl | Generic | 669 | 229 | $13,107 |
Frequently asked questions
What is Dr. Tam Nguyen's medical specialty?
Dr. Tam Nguyen practices Internal Medicine Physician in San Jose, CA.
Where does Dr. Tam Nguyen practice?
Dr. Tam Nguyen practices at 200 Jose Figueres Ave Ste 180, San Jose, CA 951161586. Office phone: 4082585083.
What is Dr. Tam Nguyen's NPI?
Dr. Tam Nguyen's National Provider Identifier (NPI) is 1962520478, issued by NPPES.
Does Dr. Tam Nguyen accept Medicare assignment?
Dr. Tam Nguyen does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Tam Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Residence visit for established patient with moderate level of medical decision making (HCPCS 99349); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.