Doctor profile · Federal record
Dr. Andrew Chang, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Loma Linda, CA
- NPI 1396702874
- Accepts Medicare
- MIPS 74.4 / 100 · 2023
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
11370 Anderson St # 3625
Loma Linda, CA 923543450
(909) 558-2850
fax (909) 558-2424 - Additional location
-
300 Sierra College Dr, Ste.105
Grass Valley, CA 959455082
(530) 273-3377 - Mailing address
-
11234 Anderson St # 1516
Loma Linda, CA 923501716
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- June 23, 2025
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G72746
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1396702874. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,313
Distinct HCPCS
10
Medicare allowed
$143,940
| 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 | 257 | 252 | $5 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 193 | 188 | $131 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 163 | 161 | $78 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 126 | 103 | $93 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 124 | 124 | $245 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 75 | 66 | $90 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 55 | 55 | $179 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 53 | 50 | $116 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 48 | 48 | $138 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 46 | 44 | $129 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 54. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$96
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Olympus America Inc. | 1 | $34.67 | |
| GENZYME CORPORATION | 1 | $34.22 | |
| Boston Scientific Corporation | 1 | $26.91 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
650
Patients
236
Total drug cost
$69,263
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 157 | 60 | $2,144 |
| Pantoprazole Sodium | Generic | 109 | 32 | $1,458 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 84 | 82 | $13,996 |
| Amitriptyline Hcl | Generic | 40 | 0 | $327 |
| Mesalamine | Generic | 39 | 0 | $22,658 |
| Dicyclomine Hcl | Generic | 31 | 11 | $742 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 29 | 0 | $14,829 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 29 | 28 | $2,368 |
| Furosemide | Generic | 26 | 0 | $234 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 23 | 23 | $381 |
Frequently asked questions
What is Dr. Andrew Chang's medical specialty?
Dr. Andrew Chang practices Gastroenterology Physician in Loma Linda, CA.
Where does Dr. Andrew Chang practice?
Dr. Andrew Chang practices at 11370 Anderson St # 3625, Loma Linda, CA 923543450. Office phone: 9095582850.
What is Dr. Andrew Chang's NPI?
Dr. Andrew Chang's National Provider Identifier (NPI) is 1396702874, issued by NPPES.
Does Dr. Andrew Chang accept Medicare assignment?
Yes. Dr. Andrew Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andrew Chang 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); Telephone medical discussion with physician (HCPCS 99443); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.