Doctor profile · Federal record
Dr. Les Liu, MD
Internal Medicine Physician (CMS: Internal Medicine) · Fontana, CA
- NPI 1386703999
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9961 Sierra Ave
Fontana, CA 923356720
(909) 427-3910
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- December 3, 2021
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A55434
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1386703999. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
14
Distinct HCPCS
1
Medicare allowed
$1,368
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 14 | 12 | $98 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 61. This provider delivers 0.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
4,977
Patients
1,647
Total drug cost
$114,893
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 987 | 347 | $12,794 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 508 | 89 | $10,467 |
| Amlodipine Besylate | Generic | 470 | 164 | $6,081 |
| Losartan Potassium | Generic | 413 | 144 | $6,219 |
| Omeprazole | Generic | 344 | 123 | $3,083 |
| Levothyroxine Sodium | Generic | 334 | 107 | $7,850 |
| Atenolol | Generic | 296 | 97 | $3,721 |
| Lisinopril | Generic | 259 | 97 | $3,467 |
| Potassium Chloride | Generic | 245 | 98 | $16,751 |
| Glipizide | Generic | 213 | 69 | $2,912 |
Frequently asked questions
What is Dr. Les Liu's medical specialty?
Dr. Les Liu practices Internal Medicine Physician in Fontana, CA.
Where does Dr. Les Liu practice?
Dr. Les Liu practices at 9961 Sierra Ave, Fontana, CA 923356720. Office phone: 9094273910.
What is Dr. Les Liu's NPI?
Dr. Les Liu's National Provider Identifier (NPI) is 1386703999, issued by NPPES.
Does Dr. Les Liu accept Medicare assignment?
Yes. Dr. Les Liu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Les Liu commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.