Doctor profile · Federal record
Dr. Christopher Walker, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Hospitalist Physician · Hilton Head Island, SC
- NPI 1114230323
- Accepts Medicare
- 17 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 6 locations .
- Primary practice
-
20 Paddocks Blvd
Hilton Head Island, SC 299263507
(706) 614-9056 - Additional location
-
1801 Sunset Blvd, Internal Medicine
Columbia, SC 29203
(803) 540-1000
fax (803) 540-1050 - Additional location
-
25 Hospital Center Blvd
Hilton Head Island, SC 299262738
(843) 784-8224 - Additional location
-
955 Ribaut RD
Beaufort, SC 29902
(843) 522-5010 - Additional location
-
5200 Fairview Blvd
Wyoming, MN 550928013
(651) 982-7000 - Additional location
-
4500 Memorial Dr
Belleville, IL 622265360
(618) 257-6220
fax (618) 257-6679
Show 3 more locations
Credentials & registration
- NPI registered
- July 2010 — 16 yrs on file
- Profile last updated
- January 20, 2026
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (4)
- South Carolina #32988 · South Carolina #LL32988 · Minnesota #75406 · Illinois #036.167473
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1114230323. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,484
Distinct HCPCS
5
Medicare allowed
$151,969
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 681 | 307 | $76 | |
99239 |
Hospital discharge day management, more than 30 minutes | 332 | 319 | $110 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 303 | 170 | $115 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 156 | 153 | $168 | |
99291 |
Critical care, first 30-74 minutes | 12 | 12 | $206 |
In context: peer comparison
Among 8 peers in Hilton Head Island Internal Medicine Physician, average services per provider: 194. This provider delivers 7.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
268
Patients
216
Total drug cost
$24,141
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Eliquis (Apixaban) | Brand | 34 | 30 | $20,545 |
| Cefdinir | Generic | 31 | 31 | $313 |
| Prednisone | Generic | 23 | 22 | $96 |
| Pantoprazole Sodium | Generic | 22 | 18 | $372 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 21 | 21 | $164 |
| Furosemide | Generic | 19 | 19 | $88 |
| Metoprolol Succinate | Generic | 16 | 16 | $183 |
| Diltiazem 24Hr ER (Cd) (Diltiazem Hcl) | Brand | 15 | 11 | $292 |
| Ceftriaxone (Ceftriaxone Sodium) | Brand | 14 | 0 | $1,478 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 14 | 14 | $176 |
Frequently asked questions
What is Dr. Christopher Walker's medical specialty?
Dr. Christopher Walker practices Internal Medicine Physician in Hilton Head Island, SC.
Where does Dr. Christopher Walker practice?
Dr. Christopher Walker practices at 20 Paddocks Blvd, Hilton Head Island, SC 299263507. Office phone: 7066149056.
What is Dr. Christopher Walker's NPI?
Dr. Christopher Walker's National Provider Identifier (NPI) is 1114230323, issued by NPPES.
Does Dr. Christopher Walker accept Medicare assignment?
Yes. Dr. Christopher Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Walker commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.