Doctor profile · Federal record
Dr. Ji Won Ahn, MD
Mohs-Micrographic Surgery Physician · Walnut Creek, CA
- NPI 1023460243
- MIPS 77.5 / 100 · 2023
- 10 yrs on file
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
320 Lennon Ln Dept of
Walnut Creek, CA 945982419
(925) 817-5678 - Mailing address
-
200 1St St Sw
Rochester, MN 559050001
Credentials & registration
- NPI registered
- July 2016 — 10 yrs on file
- Profile last updated
- October 30, 2024
- Specialty taxonomy
- 207ND0101X — NUCC code
- State license (1)
- Minnesota #66941
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023460243. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
493
Distinct HCPCS
10
Medicare allowed
$74,893
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17311 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 84 | 53 | $423 | |
17003 |
Destruction of precancer skin growth, 2-14 growths | 76 | 12 | $6 | |
11103 |
Biopsy of related skin growth, each additional growth | 70 | 20 | $44 | |
11102 |
Biopsy of related skin growth, first growth | 57 | 35 | $66 | |
17312 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 45 | 27 | $278 | |
12032 |
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | 40 | 36 | $212 | |
17000 |
Destruction of precancer skin growth, 1 growth | 39 | 25 | $38 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 35 | 21 | $86 | |
11603 |
Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm | 22 | 18 | $135 | |
12052 |
Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm | 14 | 11 | $128 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 72. This provider delivers 6.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
330
Patients
265
Total drug cost
$4,073
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefadroxil | Generic | 141 | 114 | $761 |
| Mupirocin | Generic | 95 | 69 | $711 |
| Doxycycline Hyclate | Generic | 52 | 44 | $373 |
| Fluorouracil | Generic | 23 | 20 | $2,209 |
| Tramadol Hcl | Generic | 19 | 18 | $19 |
Frequently asked questions
What is Dr. Ji Won Ahn's medical specialty?
Dr. Ji Won Ahn practices Mohs-Micrographic Surgery Physician in Walnut Creek, CA.
Where does Dr. Ji Won Ahn practice?
Dr. Ji Won Ahn practices at 320 Lennon Ln Dept of, Walnut Creek, CA 945982419. Office phone: 9258175678.
What is Dr. Ji Won Ahn's NPI?
Dr. Ji Won Ahn's National Provider Identifier (NPI) is 1023460243, issued by NPPES.
What procedures does Dr. Ji Won Ahn commonly perform?
Top Medicare-reported procedures in 2023: Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (HCPCS 17311); Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Biopsy of related skin growth, each additional growth (HCPCS 11103). Source: CMS Medicare Physician & Other Practitioners file.