Doctor profile · Federal record
Dr. John Calhoun, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Charleston, SC
- NPI 1770845141
- Accepts Medicare
- MIPS 93.3 / 100 · 2023
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
169 Ashley Ave, Room 202 Main Hospital Msc333
Charleston, SC 294258905
(843) 792-4047
Credentials & registration
- NPI registered
- June 2012 — 14 yrs on file
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- South Carolina #LL34731
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770845141. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,319
Distinct HCPCS
10
Medicare allowed
$225,390
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 570 | 289 | $119 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 428 | 208 | $114 | |
80053 |
Blood test, comprehensive group of blood chemicals | 292 | 206 | $10 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 268 | 59 | $0 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 256 | 185 | $8 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 240 | 176 | $13 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 227 | 182 | $16 | |
83036 |
Hemoglobin a1c level | 194 | 143 | $9 | |
81001 |
Manual urinalysis test with examination using microscope, automated | 192 | 153 | $3 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 180 | 180 | $120 |
In context: peer comparison
Among 74 peers in Charleston Internal Medicine Physician, average services per provider: 177. This provider delivers 24× the peer median.Open Payments
Industry payments received
All-time total
$206
Transactions
12
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 5 | $90.98 | |
| Abbvie INC. | 4 | $73.21 | |
| Dexcom, INC. | 2 | $28.75 | |
| Amgen INC. | 1 | $13.51 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,322
Patients
1,447
Total drug cost
$70,426
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 697 | 216 | $9,824 |
| Amlodipine Besylate | Generic | 586 | 182 | $5,225 |
| Gabapentin | Generic | 412 | 87 | $7,031 |
| Tramadol Hcl | Generic | 402 | 86 | $4,761 |
| Pantoprazole Sodium | Generic | 397 | 121 | $6,954 |
| Levothyroxine Sodium | Generic | 390 | 96 | $6,998 |
| Losartan Potassium | Generic | 367 | 121 | $6,166 |
| Lisinopril | Generic | 309 | 86 | $2,999 |
| Trazodone Hcl | Generic | 297 | 69 | $3,690 |
| Alprazolam | Generic | 278 | 42 | $1,589 |
Hospital affiliations
Frequently asked questions
What is Dr. John Calhoun's medical specialty?
Dr. John Calhoun practices Internal Medicine Physician in Charleston, SC.
Where does Dr. John Calhoun practice?
Dr. John Calhoun practices at 169 Ashley Ave, Charleston, SC 294258905. Office phone: 8437924047.
What is Dr. John Calhoun's NPI?
Dr. John Calhoun's National Provider Identifier (NPI) is 1770845141, issued by NPPES.
Does Dr. John Calhoun accept Medicare assignment?
Yes. Dr. John Calhoun accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Calhoun commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Blood test, comprehensive group of blood chemicals (HCPCS 80053). Source: CMS Medicare Physician & Other Practitioners file.