Total Payments
$135,055
2024 Payments
$2,714
Companies
52
Transactions
1,228
Medicare Patients
19,445
Medicare Billing
$3.4M
Payment Breakdown by Category
Other$104,064 (77.1%)
Food & Beverage$23,887 (17.7%)
Consulting$3,670 (2.7%)
Travel$2,488 (1.8%)
Research$542.70 (0.4%)
Education$403.48 (0.3%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $101,564 | 38 | 75.2% |
| Food and Beverage | $23,887 | 1,162 | 17.7% |
| Consulting Fee | $3,670 | 5 | 2.7% |
| Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program | $2,500 | 2 | 1.9% |
| Travel and Lodging | $2,488 | 10 | 1.8% |
| Unspecified | $542.70 | 3 | 0.4% |
| Education | $403.48 | 8 | 0.3% |
Payments by Type
General
$134,512
1,225 transactions
Research
$542.70
3 transactions
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Celgene Corporation | $42,043 | 62 | $0 (2019) |
| Amgen Inc. | $33,066 | 115 | $0 (2024) |
| Regeneron Healthcare Solutions, Inc. | $28,369 | 52 | $0 (2024) |
| ABBVIE INC. | $6,735 | 180 | $0 (2024) |
| GENZYME CORPORATION | $6,347 | 21 | $0 (2024) |
| Ortho Dermatologics, a division of Bausch Health US, LLC | $5,481 | 42 | $0 (2024) |
| Novartis Pharmaceuticals Corporation | $1,822 | 97 | $0 (2024) |
| Janssen Biotech, Inc. | $1,526 | 110 | $0 (2024) |
| LEO Pharma Inc. | $1,453 | 85 | $0 (2024) |
| Genentech USA, Inc. | $1,098 | 48 | $0 (2023) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $2,714 | 153 | ABBVIE INC. ($433.22) |
| 2023 | $2,716 | 125 | ABBVIE INC. ($420.71) |
| 2022 | $8,766 | 135 | Amgen Inc. ($6,457) |
| 2021 | $16,515 | 149 | Amgen Inc. ($14,349) |
| 2020 | $9,070 | 98 | Amgen Inc. ($7,632) |
| 2019 | $22,797 | 171 | Celgene Corporation ($8,879) |
| 2018 | $41,177 | 192 | Celgene Corporation ($18,219) |
| 2017 | $31,300 | 205 | Celgene Corporation ($14,945) |
All Payment Transactions
1,228 individual payment records from CMS Open Payments — Page 1 of 50
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/23/2024 | Ortho Dermatologics, a division of Bausch Health US, LLC | SILIQ (Drug), DUOBRII | Food and Beverage | In-kind items and services | $15.95 | General |
| Category: Dermatology | ||||||
| 12/18/2024 | GENZYME CORPORATION | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $32.71 | General |
| Category: Immunology | ||||||
| 12/17/2024 | LEO Pharma Inc. | ADBRY (Biological) | Food and Beverage | In-kind items and services | $23.76 | General |
| Category: DERMATOLOGY | ||||||
| 12/17/2024 | STRATA Skin Sciences, Inc. | XTRAC (Device) | Food and Beverage | In-kind items and services | $14.43 | General |
| Category: Dermatology | ||||||
| 12/17/2024 | Dermavant Sciences, Inc. | VTAMA (Drug) | Food and Beverage | In-kind items and services | $2.69 | General |
| Category: DERMATOLOGY | ||||||
| 12/16/2024 | E.R. Squibb & Sons, L.L.C. | Sotyktu (Drug) | Food and Beverage | Cash or cash equivalent | $35.79 | General |
| Category: Immunology | ||||||
| 12/16/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $12.76 | General |
| Category: IMMUNOLOGY | ||||||
| 12/13/2024 | Arcutis Biotherapeutics, Inc. | Zoryve (Drug) | Food and Beverage | In-kind items and services | $14.19 | General |
| Category: Dermatology | ||||||
| 12/12/2024 | Dermavant Sciences, Inc. | VTAMA (Drug) | Food and Beverage | In-kind items and services | $1.42 | General |
| Category: DERMATOLOGY | ||||||
| 12/11/2024 | UCB, Inc. | Bimzelx (Biological) | Food and Beverage | In-kind items and services | $28.08 | General |
| Category: Immunology | ||||||
| 12/10/2024 | Novartis Pharmaceuticals Corporation | COSENTYX (Drug) | Food and Beverage | In-kind items and services | $24.36 | General |
| Category: Dermatology | ||||||
| 12/04/2024 | Novartis Pharmaceuticals Corporation | COSENTYX (Drug) | Food and Beverage | In-kind items and services | $26.48 | General |
| Category: Dermatology | ||||||
| 12/04/2024 | Ortho Dermatologics, a division of Bausch Health US, LLC | SILIQ (Drug), DUOBRII | Food and Beverage | In-kind items and services | $24.13 | General |
| Category: Dermatology | ||||||
| 12/02/2024 | LEO Pharma Inc. | ADBRY (Biological) | Food and Beverage | In-kind items and services | $15.01 | General |
| Category: DERMATOLOGY | ||||||
| 12/02/2024 | STRATA Skin Sciences, Inc. | XTRAC (Device) | Food and Beverage | In-kind items and services | $2.36 | General |
| Category: Dermatology | ||||||
| 11/25/2024 | ABBVIE INC. | BOTOX (Biological) | Food and Beverage | In-kind items and services | $11.18 | General |
| Category: FACIAL AESTHETICS | ||||||
| 11/22/2024 | LEO Pharma Inc. | ADBRY (Biological) | Food and Beverage | In-kind items and services | $19.62 | General |
| Category: DERMATOLOGY | ||||||
| 11/19/2024 | Organon Llc | HADLIMA (Drug) | Food and Beverage | In-kind items and services | $28.13 | General |
| Category: ADALIMUMAB-BWWD | ||||||
| 11/19/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $25.65 | General |
| Category: IMMUNOLOGY | ||||||
| 11/19/2024 | Dermavant Sciences, Inc. | VTAMA (Drug) | Food and Beverage | In-kind items and services | $2.40 | General |
| Category: DERMATOLOGY | ||||||
| 11/15/2024 | E.R. Squibb & Sons, L.L.C. | Sotyktu (Drug) | Food and Beverage | Cash or cash equivalent | $19.26 | General |
| Category: Immunology | ||||||
| 11/13/2024 | ABBVIE INC. | BOTOX (Biological) | Food and Beverage | In-kind items and services | $6.07 | General |
| Category: FACIAL AESTHETICS | ||||||
| 11/11/2024 | Lilly USA, LLC | TALTZ (Drug), EBGLYSS | Food and Beverage | In-kind items and services | $14.23 | General |
| Category: Immunology | ||||||
| 11/08/2024 | Amgen Inc. | Otezla (Drug) | Food and Beverage | In-kind items and services | $148.58 | General |
| Category: Inflammation | ||||||
| 11/08/2024 | ABBVIE INC. | SKYRIZI (Biological) | Food and Beverage | In-kind items and services | $29.84 | General |
| Category: IMMUNOLOGY | ||||||
Research Studies & Clinical Trials
| Study Name | Company | Amount | Records |
|---|---|---|---|
| A MULTICENTER RANDOMIZED DOUBLE BLIND PLACEBO CONTROLLED STUDY COMPARING THE EFFICACY AND SAFETY OF LY2439821 TO ETANERCEPT AND PLACEBO IN PATIENTS WITH MODERATE TO SEVERE PLAQUE PSORIASIS | Eli Lilly and Company | $512.16 | 1 |
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 35 | 4,442 | 30,245 | $1.6M | $710,535 |
| 2022 | 42 | 4,964 | 33,296 | $1.8M | $928,240 |
| 2021 | 40 | 5,180 | 35,243 | $1.8M | $966,699 |
| 2020 | 36 | 4,859 | 18,297 | $1.6M | $815,862 |
Total Patients
19,445
Total Services
117,081
Medicare Billing
$3.4M
Procedure Codes
153
All Medicare Procedures & Services
153 procedure records from CMS Medicare Utilization — Page 1 of 7
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 17311 | Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | Office | 2023 | 232 | 336 | $322,482 | $143,516 | 44.5% |
| 17312 | Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | Office | 2023 | 158 | 252 | $144,430 | $79,805 | 55.3% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 698 | 1,168 | $150,989 | $67,380 | 44.6% |
| 11102 | Biopsy of related skin growth, first growth | Office | 2023 | 476 | 715 | $104,735 | $46,307 | 44.2% |
| 17000 | Destruction of precancer skin growth, 1 growth | Office | 2023 | 638 | 1,115 | $106,850 | $35,793 | 33.5% |
| 14040 | Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.0 sq cm or less | Office | 2023 | 56 | 57 | $58,400 | $32,648 | 55.9% |
| 13132 | Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm | Office | 2023 | 131 | 166 | $114,144 | $30,876 | 27.1% |
| 17313 | Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks | Office | 2023 | 49 | 56 | $53,402 | $27,372 | 51.3% |
| 11103 | Biopsy of related skin growth, each additional growth | Office | 2023 | 316 | 696 | $50,793 | $26,656 | 52.5% |
| J7345 | Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg | Office | 2023 | 88 | 19,800 | $117,704 | $25,676 | 21.8% |
| 13121 | Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | Office | 2023 | 94 | 119 | $73,360 | $23,776 | 32.4% |
| 17003 | Destruction of precancer skin growth, 2-14 growths | Office | 2023 | 574 | 4,639 | $44,757 | $22,723 | 50.8% |
| 96574 | Application of light with debridement to destroy precancer skin growth | Office | 2023 | 82 | 91 | $36,159 | $19,004 | 52.6% |
| 17004 | Destruction of precancer skin growth, 15 or more growths | Office | 2023 | 98 | 115 | $28,152 | $14,909 | 53.0% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 123 | 157 | $29,364 | $13,680 | 46.6% |
| 17314 | Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks | Office | 2023 | 33 | 41 | $24,152 | $12,487 | 51.7% |
| 14060 | Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less | Office | 2023 | 21 | 21 | $22,751 | $12,464 | 54.8% |
| 77280 | Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | Office | 2023 | 16 | 47 | $16,075 | $9,730 | 60.5% |
| 17110 | Destruction of skin growth, 1-14 growths | Office | 2023 | 106 | 121 | $19,431 | $9,004 | 46.3% |
| 14041 | Repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin, 10.1-30.0 sq cm | Office | 2023 | 12 | 12 | $14,173 | $8,547 | 60.3% |
| 14021 | Repair of wound of scalp, arms, or legs by transferring skin, 10.1-30.0 sq cm | Office | 2023 | 12 | 12 | $15,654 | $7,673 | 49.0% |
| 17262 | Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | Office | 2023 | 48 | 54 | $14,330 | $6,565 | 45.8% |
| 13101 | Complicated repair of wound of trunk, 2.6-7.5 cm | Office | 2023 | 26 | 26 | $15,014 | $6,406 | 42.7% |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | Office | 2023 | 111 | 127 | $9,977 | $4,950 | 49.6% |
| 17272 | Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | Office | 2023 | 32 | 35 | $10,937 | $4,481 | 41.0% |
About Dr. William Ko, M.D
Dr. William Ko, M.D is a MOHS-Micrographic Surgery healthcare provider based in Phoenix, Arizona. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 06/07/2006. The National Provider Identifier (NPI) number assigned to this provider is 1841230976.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. William Ko, M.D has received a total of $135,055 in payments from pharmaceutical and medical device companies, with $2,714 received in 2024. These payments were reported across 1,228 transactions from 52 companies. The most common payment nature is "Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program" ($101,564).
As a Medicare-enrolled provider, Ko has provided services to 19,445 Medicare beneficiaries, totaling 117,081 services with total Medicare billing of $3.4M. Data is available for 4 years (2020–2023), covering 153 distinct procedure/service records.
Ad
Practice Information
- Specialty MOHS-Micrographic Surgery
- Other Specialties Procedural Dermatology, Dermatology
- Location Phoenix, AZ
- Active Since 06/07/2006
- Last Updated 10/25/2018
- Taxonomy Code 207ND0101X
- Entity Type Individual
- NPI Number 1841230976
Products in Payments
- Otezla (Drug) $67,752
- DUPIXENT DUPILUMAB INJECTION (Biological) $27,937
- DUPIXENT (Drug) $5,993
- Otezla (Biological) $3,381
- Humira (Biological) $3,096
- DUOBRII (Drug) $2,952
- SILIQ (Drug) $2,396
- SKYRIZI (Biological) $1,750
- Skyrizi (Biological) $1,200
- TALTZ (Drug) $1,165
- COSENTYX (Biological) $950.82
- Enbrel (Biological) $753.71
- DUPIXENT (Biological) $702.37
- TREMFYA (Drug) $686.89
- COSENTYX (Drug) $680.78
- Xolair (Biological) $637.87
- Cimzia (Drug) $629.74
- ADBRY (Biological) $573.96
- EUCRISA (Drug) $478.08
- PICATO (Drug) $471.25
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Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.