Doctor profile · Federal record
Dr. John Hemphill, MD
Interventional Cardiology Physician (CMS: Cardiovascular Disease (Cardiology)) · Cardiovascular Disease Physician · Cardiovascular Disease Physician · Chattanooga, TN
- NPI 1912188897
- Accepts Medicare
- MIPS 94.7 / 100 · 2023
- 25 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2501 Citico Ave
Chattanooga, TN 374041127
(423) 697-2000
fax (423) 697-2118
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- September 12, 2019
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RI0011X — NUCC code
- State licenses (2)
- Tennessee #47332 · Texas #M1137
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912188897. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,225
Distinct HCPCS
10
Medicare allowed
$171,399
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 574 | 405 | $119 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 445 | 426 | $13 | |
85610 |
Blood test, clotting time | 303 | 30 | $4 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 218 | 201 | $8 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 164 | 59 | $75 | |
99152 |
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 155 | 151 | $11 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 101 | 101 | $154 | |
93458 |
Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | 81 | 80 | $218 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 42 | 41 | $164 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 40 | 26 | $113 |
In context: peer comparison
Among 6 peers in Chattanooga Interventional Cardiology Physician, average services per provider: 123. This provider delivers 18× the peer median.Open Payments
Industry payments received
All-time total
$8,431
Transactions
16
Manufacturers
13
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Axsome Therapeutics, INC. | 1 | $7,969.00 | |
| Abiomed | 2 | $143.59 | |
| Zoll Services LLC (A/K/A Zoll LifeCor Corp) | 1 | $99.47 | |
| AstraZeneca Pharmaceuticals Lp | 3 | $53.13 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $29.56 | |
| Abbott Laboratories | 1 | $24.78 | |
| Terumo Medical Corporation | 1 | $19.48 | |
| Pfizer INC. | 1 | $17.67 | |
| Teva Pharmaceuticals USA, INC. | 1 | $16.27 | |
| Janssen Pharmaceuticals, INC | 1 | $15.38 | |
| Cordis US Corp. | 1 | $14.61 | |
| Teleflex LLC | 1 | $14.01 | |
| Philips North America LLC | 1 | $13.87 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,278
Patients
1,698
Total drug cost
$974,134
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Carvedilol | Generic | 692 | 229 | $7,762 |
| Eliquis (Apixaban) | Brand | 565 | 148 | $636,349 |
| Atorvastatin Calcium | Generic | 549 | 164 | $9,676 |
| Amlodipine Besylate | Generic | 488 | 163 | $2,957 |
| Rosuvastatin Calcium | Generic | 444 | 160 | $8,244 |
| Metoprolol Succinate | Generic | 370 | 122 | $7,684 |
| Losartan Potassium | Generic | 340 | 103 | $5,258 |
| Metoprolol Tartrate | Generic | 304 | 102 | $1,815 |
| Spironolactone | Generic | 272 | 83 | $3,294 |
| Valsartan | Generic | 252 | 82 | $13,570 |
Hospital affiliations
Frequently asked questions
What is Dr. John Hemphill's medical specialty?
Dr. John Hemphill practices Interventional Cardiology Physician in Chattanooga, TN.
Where does Dr. John Hemphill practice?
Dr. John Hemphill practices at 2501 Citico Ave, Chattanooga, TN 374041127. Office phone: 4236972000.
What is Dr. John Hemphill's NPI?
Dr. John Hemphill's National Provider Identifier (NPI) is 1912188897, issued by NPPES.
Does Dr. John Hemphill accept Medicare assignment?
Yes. Dr. John Hemphill accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Hemphill commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (HCPCS 93000); Blood test, clotting time (HCPCS 85610). Source: CMS Medicare Physician & Other Practitioners file.