Doctor profile · Federal record
Dr. William Shields, D.O.
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Grand Junction, CO
- NPI 1245203561
- Accepts Medicare
- MIPS 38.3 / 100 · 2023
- 25 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1035 Wellington Avenue, Ste 101
Grand Junction, CO 81501
(970) 242-6600
fax (970) 243-7520 - Mailing address
-
1035 Wellington Ave Ste 101
Grand Junction, CO 815018122
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- December 30, 2014
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Colorado #0053228 · California #20A11059
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1245203561. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
683
Distinct HCPCS
10
Medicare allowed
$106,223
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 177 | 177 | $127 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 114 | 114 | $254 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 86 | 83 | $110 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 77 | 76 | $114 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 45 | 45 | $181 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 38 | 35 | $131 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 35 | 27 | $120 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 21 | 21 | $150 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 21 | 21 | $133 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 20 | 20 | $175 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 53. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$248
Transactions
12
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, Inc. | 7 | $146.61 | |
| ABBVIE INC. | 2 | $34.32 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $26.29 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $24.00 | |
| Intercept Pharmaceuticals, Inc. | 1 | $17.05 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
198
Patients
16
Total drug cost
$469,521
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 51 | 16 | $634 |
| Humira(Cf) Pen (Adalimumab) | Brand | 38 | 0 | $362,395 |
| Ursodiol | Generic | 28 | 0 | $11,866 |
| Xifaxan (Rifaximin) | Brand | 28 | 0 | $87,345 |
| Mesalamine Er (Mesalamine) | Brand | 24 | 0 | $5,559 |
| Azathioprine | Generic | 15 | 0 | $1,498 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 14 | 0 | $224 |
Hospital affiliations
Frequently asked questions
What is Dr. William Shields's medical specialty?
Dr. William Shields practices Gastroenterology Physician in Grand Junction, CO.
Where does Dr. William Shields practice?
Dr. William Shields practices at 1035 Wellington Avenue, Ste 101, Grand Junction, CO 81501. Office phone: 9702426600.
What is Dr. William Shields's NPI?
Dr. William Shields's National Provider Identifier (NPI) is 1245203561, issued by NPPES.
Does Dr. William Shields accept Medicare assignment?
Yes. Dr. William Shields accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Shields commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.