Doctor profile · Federal record
Dr. Melvin Lau, MD
Gastroenterology Physician (CMS: Gastroenterology) · Round Rock, TX
- NPI 1407006836
- Accepts Medicare
- 22 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 University Blvd Bldg A
Round Rock, TX 786651032
(512) 509-0200
fax (512) 509-2229 - Additional location
-
302 University Blvd
Round Rock, TX 786651032
fax (512) 218-6330 - Mailing address
-
Po Box 844658
Dallas, TX 752844658
Credentials & registration
- NPI registered
- September 2008 — 18 yrs on file
- Profile last updated
- October 1, 2020
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Texas #M6250
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1407006836. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
368
Distinct HCPCS
10
Medicare allowed
$42,408
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 88 | 87 | $132 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 43 | 40 | $94 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 40 | 36 | $63 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 37 | 37 | $92 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 37 | 22 | $76 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 36 | 36 | $237 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 18 | 18 | $125 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 17 | 17 | $174 | |
45381 |
Injection beneath lining of large bowel using a flexible endoscope | 15 | 14 | $15 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 14 | 14 | $79 |
In context: peer comparison
Among 13 peers in Round Rock Gastroenterology Physician, average services per provider: 43. This provider delivers 8.6× the peer median.Open Payments
Industry payments received
All-time total
$46
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Olympus America INC. | 1 | $23.84 | |
| Janssen Biotech, INC. | 1 | $22.59 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
139
Patients
63
Total drug cost
$19,299
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 75 | 32 | $2,471 |
| Pantoprazole Sodium | Generic | 33 | 16 | $719 |
| Linzess (Linaclotide) | Brand | 16 | 0 | $15,813 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 15 | 15 | $296 |
Hospital affiliations
Frequently asked questions
What is Dr. Melvin Lau's medical specialty?
Dr. Melvin Lau practices Gastroenterology Physician in Round Rock, TX.
Where does Dr. Melvin Lau practice?
Dr. Melvin Lau practices at 300 University Blvd Bldg A, Round Rock, TX 786651032. Office phone: 5125090200.
What is Dr. Melvin Lau's NPI?
Dr. Melvin Lau's National Provider Identifier (NPI) is 1407006836, issued by NPPES.
Does Dr. Melvin Lau accept Medicare assignment?
Yes. Dr. Melvin Lau accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Melvin Lau commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.