Doctor profile · Federal record
Dr. Christopher Entwisle, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Livermore, CA
- NPI 1841256963
- Accepts Medicare
- 26 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1133 E Stanley Blvd, Suite 207
Livermore, CA 945504200
(925) 245-1238
fax (925) 245-9849
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- April 8, 2008
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A95045
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841256963. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,133
Distinct HCPCS
10
Medicare allowed
$179,809
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 356 | 259 | $151 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 121 | 121 | $280 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 92 | 92 | $194 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 92 | 85 | $106 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 83 | 83 | $109 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 75 | 75 | $132 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 70 | 40 | $88 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 55 | 20 | $132 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 43 | 43 | $146 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 35 | 34 | $193 |
In context: peer comparison
Among 2 peers in Livermore Gastroenterology Physician, average services per provider: 57. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$284
Transactions
25
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 23 | $251.51 | |
| Celgene Corporation | 2 | $32.44 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,445
Patients
485
Total drug cost
$231,783
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 680 | 204 | $11,442 |
| Omeprazole | Generic | 214 | 61 | $4,877 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 64 | 64 | $4,872 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 57 | 15 | $30,552 |
| Plenvu (Peg3350/Sod Sul/Nacl/Kcl/Asb/C) | Brand | 56 | 56 | $8,255 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 54 | 27 | $608 |
| Linzess (Linaclotide) | Brand | 54 | 19 | $74,480 |
| Lubiprostone | Generic | 46 | 0 | $11,796 |
| Mesalamine | Generic | 44 | 13 | $27,494 |
| Sucralfate | Generic | 41 | 15 | $3,381 |
Hospital affiliations
Frequently asked questions
What is Dr. Christopher Entwisle's medical specialty?
Dr. Christopher Entwisle practices Gastroenterology Physician in Livermore, CA.
Where does Dr. Christopher Entwisle practice?
Dr. Christopher Entwisle practices at 1133 E Stanley Blvd, Livermore, CA 945504200. Office phone: 9252451238.
What is Dr. Christopher Entwisle's NPI?
Dr. Christopher Entwisle's National Provider Identifier (NPI) is 1841256963, issued by NPPES.
Does Dr. Christopher Entwisle accept Medicare assignment?
Yes. Dr. Christopher Entwisle accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Entwisle commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.