Doctor profile · Federal record
Dr. William Ko, M.D.
Dermatology Physician (CMS: Dermatology) · Mohs-Micrographic Surgery Physician · Procedural Dermatology Physician · Phoenix, AZ
- NPI 1841230976
- Accepts Medicare
- MIPS 63.0 / 100 · 2023
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2224 W Northern Ave Ste D300
Phoenix, AZ 85021
(602) 277-1449
fax (602) 277-9984 - Additional location
-
2121 W Indian School RD
Phoenix, AZ 850154908
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- October 25, 2018
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207N00000X — NUCC code
- State license (1)
- Arizona #26333
- Medicaid
- AZ #686868
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841230976. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
30,245
Distinct HCPCS
10
Medicare allowed
$936,839
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J7345 |
Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg | 19,800 | 88 | $2 | |
17003 |
Destruction of precancer skin growth, 2-14 growths | 4,639 | 574 | $6 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 1,168 | 698 | $88 | |
17000 |
Destruction of precancer skin growth, 1 growth | 1,115 | 638 | $46 | |
11102 |
Biopsy of related skin growth, first growth | 715 | 476 | $93 | |
11103 |
Biopsy of related skin growth, each additional growth | 696 | 316 | $49 | |
17311 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | 336 | 232 | $541 | |
17312 |
Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 252 | 158 | $397 | |
13132 |
Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm | 166 | 131 | $233 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 157 | 123 | $123 |
In context: peer comparison
Among 27 peers in this city , average services per provider: 253. This provider delivers 120× the peer median.Open Payments
Industry payments received
All-time total
$2,714
Transactions
144
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 23 | $433.22 | |
| Amgen Inc. | 7 | $377.76 | |
| LEO Pharma Inc. | 22 | $296.13 | |
| Novartis Pharmaceuticals Corporation | 11 | $267.13 | |
| E.R. Squibb & Sons, L.L.C. | 11 | $212.87 | |
| Dermavant Sciences, Inc. | 34 | $205.75 | |
| Regeneron Healthcare Solutions, Inc. | 7 | $182.26 | |
| GENZYME CORPORATION | 4 | $126.60 | |
| Janssen Biotech, Inc. | 4 | $90.30 | |
| SUN PHARMACEUTICAL INDUSTRIES INC. | 3 | $72.67 | |
| Organon Llc | 3 | $67.65 | |
| STRATA Skin Sciences, Inc. | 7 | $66.96 | |
| Ortho Dermatologics, a division of Bausch Health US, LLC | 3 | $59.54 | |
| Arcutis Biotherapeutics, Inc. | 3 | $56.37 | |
| UCB, Inc. | 2 | $47.72 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,063
Patients
765
Total drug cost
$152,004
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Mupirocin | Generic | 472 | 367 | $3,950 |
| Ketoconazole | Generic | 96 | 55 | $1,967 |
| Fluticasone Propionate | Generic | 91 | 81 | $2,661 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 74 | 57 | $2,706 |
| Imiquimod | Generic | 66 | 37 | $2,380 |
| Fluorouracil | Generic | 43 | 32 | $4,169 |
| Triamcinolone Acetonide | Generic | 40 | 35 | $465 |
| Doxycycline Hyclate | Generic | 29 | 12 | $1,547 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 28 | 25 | $73 |
| Clobetasol Propionate | Generic | 27 | 17 | $904 |
Frequently asked questions
What is Dr. William Ko's medical specialty?
Dr. William Ko practices Dermatology Physician in Phoenix, AZ.
Where does Dr. William Ko practice?
Dr. William Ko practices at 2224 W Northern Ave Ste D300, Phoenix, AZ 85021. Office phone: 6022771449.
What is Dr. William Ko's NPI?
Dr. William Ko's National Provider Identifier (NPI) is 1841230976, issued by NPPES.
Does Dr. William Ko accept Medicare assignment?
Yes. Dr. William Ko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Ko commonly perform?
Top Medicare-reported procedures in 2023: Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg (HCPCS J7345); Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.