Doctor profile · Federal record
Dr. Eric Chak, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Davis, CA
- NPI 1225271331
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2068 John Jones RD
Davis, CA 956169711
(530) 747-0389 - Mailing address
-
Po Box 255228
Sacramento, CA 958655228
Credentials & registration
- NPI registered
- April 2009 — 17 yrs on file
- Profile last updated
- March 5, 2025
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A114205
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225271331. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
752
Distinct HCPCS
10
Medicare allowed
$52,782
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J2250 |
Injection, midazolam hydrochloride, per 1 mg | 207 | 46 | $0 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 111 | 88 | $107 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 70 | 65 | $75 | |
J3010 |
Injection, fentanyl citrate, 0.1 mg | 64 | 46 | $1 | |
99153 |
Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes | 59 | 42 | $12 | |
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 | 47 | 47 | $58 | |
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 | 46 | 42 | $5 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 24 | 24 | $343 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $155 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 21 | 21 | $143 |
In context: peer comparison
Among 2 peers in Davis Gastroenterology Physician, average services per provider: 57. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $19.75 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
507
Patients
153
Total drug cost
$410,462
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Vemlidy (Tenofovir Alafenamide) | Brand | 93 | 11 | $158,919 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 64 | 63 | $1,255 |
| Xifaxan (Rifaximin) | Brand | 62 | 14 | $210,771 |
| Entecavir | Generic | 53 | 16 | $25,872 |
| Pantoprazole Sodium | Generic | 39 | 0 | $1,268 |
| Spironolactone | Generic | 32 | 12 | $966 |
| Furosemide | Generic | 26 | 12 | $324 |
| Lactulose | Generic | 23 | 0 | $2,676 |
| Ursodiol | Generic | 23 | 0 | $2,763 |
| Omeprazole | Generic | 21 | 12 | $459 |
Hospital affiliations
Frequently asked questions
What is Dr. Eric Chak's medical specialty?
Dr. Eric Chak practices Gastroenterology Physician in Davis, CA.
Where does Dr. Eric Chak practice?
Dr. Eric Chak practices at 2068 John Jones RD, Davis, CA 956169711. Office phone: 5307470389.
What is Dr. Eric Chak's NPI?
Dr. Eric Chak's National Provider Identifier (NPI) is 1225271331, issued by NPPES.
Does Dr. Eric Chak accept Medicare assignment?
Yes. Dr. Eric Chak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eric Chak commonly perform?
Top Medicare-reported procedures in 2023: Injection, midazolam hydrochloride, per 1 mg (HCPCS J2250); 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.