Doctor profile · Federal record
Dr. Clark Denniston, MD
Family Medicine Physician · Chapel Hill, NC
- NPI 1871698878
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
101 Manning Dr
Chapel Hill, NC 275990001
(919) 966-4996
fax (919) 843-5515 - Mailing address
-
143 W Franklin St
Chapel Hill, NC 275162539
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- March 31, 2021
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- North Carolina #38928
- Medicaid
- NC #8928344
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1871698878. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
301
Distinct HCPCS
6
Medicare allowed
$28,334
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 131 | 88 | $121 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 97 | 81 | $85 | |
83036 |
Hemoglobin a1c level | 28 | 21 | $10 | |
G0008 |
Administration of influenza virus vaccine | 18 | 18 | $29 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 14 | 11 | $171 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 13 | 13 | $75 |
In context: peer comparison
Among 39 peers in Chapel Hill Family Medicine Physician, average services per provider: 59. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
396
Patients
21
Total drug cost
$59,373
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 70 | 21 | $814 |
| Losartan Potassium | Generic | 35 | 0 | $513 |
| Chlorthalidone | Generic | 33 | 0 | $622 |
| Amlodipine Besylate | Generic | 29 | 0 | $265 |
| Fluticasone Propionate | Generic | 29 | 0 | $656 |
| Oxycodone Hcl | Generic | 26 | 0 | $643 |
| Gabapentin | Generic | 24 | 0 | $608 |
| Omeprazole | Generic | 22 | 0 | $528 |
| Ozempic (Semaglutide) | Brand | 22 | 0 | $30,256 |
| Furosemide | Generic | 21 | 0 | $151 |
Frequently asked questions
What is Dr. Clark Denniston's medical specialty?
Dr. Clark Denniston practices Family Medicine Physician in Chapel Hill, NC.
Where does Dr. Clark Denniston practice?
Dr. Clark Denniston practices at 101 Manning Dr, Chapel Hill, NC 275990001. Office phone: 9199664996.
What is Dr. Clark Denniston's NPI?
Dr. Clark Denniston's National Provider Identifier (NPI) is 1871698878, issued by NPPES.
What procedures does Dr. Clark Denniston commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Hemoglobin a1c level (HCPCS 83036). Source: CMS Medicare Physician & Other Practitioners file.