Doctor profile · Federal record
Dr. George Walker, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Mesa, AZ
- NPI 1528053121
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 45 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
6020 E Arbor Ave, #101
Mesa, AZ 852066102
(480) 985-1700
fax (480) 396-3659 - Mailing address
-
3020 E Camelback RD, Suite 301
Phoenix, AZ 850145095
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- February 17, 2017
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Arizona #21847
- Medicaid
- AZ #358839-02
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528053121. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,402
Distinct HCPCS
10
Medicare allowed
$158,826
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 243 | 217 | $87 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 176 | 172 | $69 | |
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 157 | 15 | $46 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 146 | 146 | $108 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 129 | 127 | $239 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 98 | 95 | $142 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 90 | 15 | $60 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 84 | 52 | $115 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 84 | 84 | $176 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 45 | 45 | $168 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 195. This provider delivers 7.2× the peer median.Open Payments
Industry payments received
All-time total
$2,547
Transactions
115
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 38 | $721.31 | |
| Janssen Biotech, Inc. | 13 | $408.56 | |
| Ferring Pharmaceuticals Inc. | 8 | $258.66 | |
| PFIZER INC. | 13 | $202.84 | |
| Merck Sharp & Dohme LLC | 10 | $191.51 | |
| QOL Medical, LLC | 5 | $95.55 | |
| Gilead Sciences, Inc. | 5 | $90.04 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $86.83 | |
| IRONWOOD PHARMACEUTICALS, INC | 5 | $78.40 | |
| Regeneron Healthcare Solutions, Inc. | 3 | $68.50 | |
| Celgene Corporation | 4 | $65.43 | |
| GENZYME CORPORATION | 2 | $63.50 | |
| CapsoVision, Inc. | 1 | $35.59 | |
| Intercept Pharmaceuticals, Inc. | 2 | $32.88 | |
| Phathom Pharmaceuticals, Inc. | 2 | $31.95 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
836
Patients
357
Total drug cost
$75,947
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 263 | 102 | $3,977 |
| Famotidine | Generic | 136 | 62 | $2,482 |
| Omeprazole | Generic | 111 | 44 | $1,357 |
| Sucralfate | Generic | 67 | 41 | $2,002 |
| Ursodiol | Generic | 33 | 0 | $4,889 |
| Nystatin | Generic | 30 | 24 | $443 |
| Metronidazole | Generic | 29 | 28 | $350 |
| Ondansetron Odt (Ondansetron) | Brand | 26 | 15 | $1,640 |
| Esomeprazole Magnesium | Generic | 24 | 0 | $1,175 |
| Movantik (Naloxegol Oxalate) | Brand | 23 | 0 | $10,075 |
Hospital affiliations
Frequently asked questions
What is Dr. George Walker's medical specialty?
Dr. George Walker practices Gastroenterology Physician in Mesa, AZ.
Where does Dr. George Walker practice?
Dr. George Walker practices at 6020 E Arbor Ave, Mesa, AZ 852066102. Office phone: 4809851700.
What is Dr. George Walker's NPI?
Dr. George Walker's National Provider Identifier (NPI) is 1528053121, issued by NPPES.
Does Dr. George Walker accept Medicare assignment?
Yes. Dr. George Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. George Walker commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS 99439). Source: CMS Medicare Physician & Other Practitioners file.