Doctor profile · Federal record
Dr. Robert Walker, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Greenville, SC
- NPI 1659320943
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1007 Grove RD, Suite D
Greenville, SC 296054630
(864) 558-0405
fax (864) 558-0407
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- June 22, 2016
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- South Carolina #19534
- Medicaid (2)
- SC #GP6470 · SC #195345
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659320943. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,237
Distinct HCPCS
9
Medicare allowed
$175,060
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 498 | 466 | $164 | |
99291 |
Critical care, first 30-74 minutes | 193 | 159 | $203 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 172 | 110 | $112 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 159 | 93 | $75 | |
99239 |
Hospital discharge day management, more than 30 minutes | 85 | 85 | $107 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 79 | 77 | $124 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 22 | 14 | $47 | |
99497 |
Advance care planning, first 30 minutes | 16 | 16 | $72 | |
31500 |
Emergent insertion of breathing tube into windpipe using an endoscope | 13 | 13 | $133 |
In context: peer comparison
Among 73 peers in Greenville Internal Medicine Physician, average services per provider: 207. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ceribell, INC. | 1 | $19.57 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
75
Patients
12
Total drug cost
$616
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Finasteride | Generic | 16 | 0 | $86 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 0 | $115 |
| Cefdinir | Generic | 12 | 12 | $154 |
| Metformin Hcl | Generic | 12 | 0 | $98 |
| Losartan Potassium | Generic | 11 | 0 | $115 |
| Metoprolol Tartrate | Generic | 11 | 0 | $48 |
Hospital affiliations
Frequently asked questions
What is Dr. Robert Walker's medical specialty?
Dr. Robert Walker practices Internal Medicine Physician in Greenville, SC.
Where does Dr. Robert Walker practice?
Dr. Robert Walker practices at 1007 Grove RD, Greenville, SC 296054630. Office phone: 8645580405.
What is Dr. Robert Walker's NPI?
Dr. Robert Walker's National Provider Identifier (NPI) is 1659320943, issued by NPPES.
Does Dr. Robert Walker accept Medicare assignment?
Yes. Dr. Robert Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Walker commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.