Doctor profile · Federal record
Dr. Roger Kao, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · San Carlos, CA
- NPI 1982786133
- Accepts Medicare
- MIPS 94.9 / 100 · 2023
- 19 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1000 Laurel St
San Carlos, CA 940703939
(650) 596-8800
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- March 19, 2020
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A98824
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1982786133. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
748
Distinct HCPCS
10
Medicare allowed
$110,122
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 160 | 156 | $6 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 152 | 125 | $153 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 111 | 97 | $205 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 60 | 60 | $160 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 48 | 48 | $127 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 41 | 41 | $285 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 39 | 39 | $205 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 38 | 38 | $260 | |
46221 |
Removal of external hemorrhoids by rubber banding | 33 | 21 | $235 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 24 | 24 | $196 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 57. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$2,781
Transactions
130
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 36 | $699.86 | |
| Janssen Biotech, Inc. | 23 | $442.01 | |
| QOL Medical, LLC | 12 | $239.85 | |
| Phathom Pharmaceuticals, Inc. | 5 | $216.34 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 13 | $198.59 | |
| Lilly USA, LLC | 9 | $189.73 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 10 | $161.55 | |
| Madrigal Pharmaceuticals | 6 | $156.13 | |
| Celltrion USA Inc. | 5 | $122.84 | |
| Merck Sharp & Dohme LLC | 3 | $73.17 | |
| Intercept Pharmaceuticals, Inc. | 3 | $59.45 | |
| VIVUS LLC | 2 | $49.41 | |
| Gilead Sciences, Inc. | 1 | $31.89 | |
| Echosens North America, Inc. | 1 | $30.88 | |
| AIMMUNE THERAPEUTICS, INC. | 1 | $27.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
818
Patients
304
Total drug cost
$353,363
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 174 | 60 | $4,600 |
| Omeprazole | Generic | 144 | 49 | $4,150 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 65 | 64 | $4,793 |
| Linzess (Linaclotide) | Brand | 63 | 22 | $82,459 |
| Creon (Lipase/Protease/Amylase) | Brand | 62 | 12 | $179,216 |
| Dicyclomine Hcl | Generic | 56 | 20 | $2,782 |
| Famotidine | Generic | 45 | 21 | $1,821 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 43 | 0 | $19,141 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 33 | 12 | $4,208 |
| Motegrity (Prucalopride Succinate) | Brand | 30 | 0 | $24,586 |
Hospital affiliations
Frequently asked questions
What is Dr. Roger Kao's medical specialty?
Dr. Roger Kao practices Gastroenterology Physician in San Carlos, CA.
Where does Dr. Roger Kao practice?
Dr. Roger Kao practices at 1000 Laurel St, San Carlos, CA 940703939. Office phone: 6505968800.
What is Dr. Roger Kao's NPI?
Dr. Roger Kao's National Provider Identifier (NPI) is 1982786133, issued by NPPES.
Does Dr. Roger Kao accept Medicare assignment?
Yes. Dr. Roger Kao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Roger Kao commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.