Physician Profile
Unclaimed ProfileAbout KO
William T. Ko, M.D. practises dermatology in Phoenix, AZ. William is a 1994 graduate of Northeastern Ohio University College of Medicine. William is also listed as specialising in mohs surgery / dermatologic surgery.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Ko?
Dr. Ko is a dermatology in Phoenix, AZ. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DERMATOLOGY”.
NPI registry
What is Dr. Ko's address?
Dr. Ko is listed at 2224 W NORTHERN AVE STE D300, Phoenix, AZ 85021. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Ko?
The number on file is (602) 277-1449. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Ko's NPI number?
Dr. Ko's National Provider Identifier is 1841230976. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Ko train?
Dr. Ko attended Northeastern Ohio University College of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ko been practising?
Dr. Ko has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Ko perform?
According to Medicare billing data, Dr. Ko performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and biopsy of related skin growth, each additional growth; provides treatments such as application of light with debridement to destroy precancer skin growth and administration of chemotherapy into growth, 1-7, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ko confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ko. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (602) 277-1449
- Email not available
Practice Locations
2224 W NORTHERN AVE STE D300
Phoenix, AZ 85021
Procedures Most Often Billed to Medicare
25,643 services · 3,938 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
4,467 |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
1,065 |
| Biopsy of related skin growth, each additional growth | Procedure | 11103 |
678 |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
660 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks | Procedure | 17311 |
302 |
| Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm | Procedure | 13132 |
164 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | Procedure | 17312 |
155 |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
140 |
| Destruction of precancer skin growth, 15 or more growths | Procedure | 17004 |
105 |
| Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | Procedure | 13121 |
92 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other dermatology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other dermatology specialists in Phoenix 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Northeastern Ohio University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Northeastern Ohio University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in AZ who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.