Doctor profile · Federal record
Dr. Karynne Duncan, M.D.
Dermatology Physician (CMS: Dermatology) · Saint Helena, CA
- NPI 1548235617
- Accepts Medicare
- MIPS 98.3 / 100 · 2023
- 34 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1104 Adams St, Suite 201
Saint Helena, CA 945741164
(707) 967-0800
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- October 2, 2012
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207N00000X — NUCC code
- State license (1)
- California #G86640
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548235617. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,306
Distinct HCPCS
10
Medicare allowed
$218,093
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 1,417 | 252 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 576 | 351 | $145 | |
17000 |
Destruction of precancer skin growth, 1 growth | 456 | 287 | $54 | |
11102 |
Biopsy of related skin growth, first growth | 247 | 183 | $99 | |
17110 |
Destruction of skin growth, 1-14 growths | 239 | 172 | $137 | |
11103 |
Biopsy of related skin growth, each additional growth | 132 | 75 | $61 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 125 | 95 | $103 | |
17262 |
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | 33 | 28 | $201 | |
17004 |
Destruction of precancer skin growth, 15 or more growths | 29 | 20 | $198 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 23 | 22 | $203 |
In context: peer comparison
Among 1 peers in Saint Helena Dermatology Physician, average services per provider: 275. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
318
Patients
147
Total drug cost
$9,519
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ketoconazole | Generic | 58 | 33 | $1,086 |
| Mupirocin | Generic | 53 | 47 | $438 |
| Minoxidil | Generic | 41 | 12 | $699 |
| Clobetasol Propionate | Generic | 31 | 24 | $2,091 |
| Doxycycline Hyclate | Generic | 30 | 0 | $830 |
| Fluorouracil | Generic | 24 | 18 | $1,947 |
| Doxepin Hcl | Generic | 21 | 0 | $461 |
| Hydrocortisone | Generic | 17 | 13 | $155 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 16 | 0 | $1,100 |
| Pentoxifylline | Generic | 14 | 0 | $574 |
Frequently asked questions
What is Dr. Karynne Duncan's medical specialty?
Dr. Karynne Duncan practices Dermatology Physician in Saint Helena, CA.
Where does Dr. Karynne Duncan practice?
Dr. Karynne Duncan practices at 1104 Adams St, Saint Helena, CA 945741164. Office phone: 7079670800.
What is Dr. Karynne Duncan's NPI?
Dr. Karynne Duncan's National Provider Identifier (NPI) is 1548235617, issued by NPPES.
Does Dr. Karynne Duncan accept Medicare assignment?
Yes. Dr. Karynne Duncan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karynne Duncan commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99214); Destruction of precancer skin growth, 1 growth (HCPCS 17000). Source: CMS Medicare Physician & Other Practitioners file.