Physician Profile
Unclaimed ProfileAbout HOROWITZ
Based in Torrance, CA, Mark Kevin Horowitz, DO is listed in the NPI registry under dermatology. Mark is also listed as specialising in dermatopathology, pediatric dermatology, and 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.
Areas of Expertise
Common questions
What kind of doctor is Dr. Horowitz?
Dr. Horowitz is a dermatologist (skin doctor) in Torrance, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Dermatology”.
NPI registry
What is Dr. Horowitz's address?
Dr. Horowitz is listed at 23550 HAWTHORNE BLVD STE 200, Torrance, CA 90505. 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. Horowitz?
The number on file is (310) 373-2636. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Horowitz's NPI number?
Dr. Horowitz's National Provider Identifier is 1669413878. 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
How long has Dr. Horowitz been practising?
Dr. Horowitz has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
What procedures does Dr. Horowitz perform?
According to Medicare billing data, Dr. Horowitz performs procedures including destruction of precancer skin growth, 2-14 growths, destruction of precancer skin growth, 1 growth and biopsy of related skin growth, first growth, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Horowitz confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Horowitz. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (310) 373-2636
- Email not available
Practice Locations
23550 HAWTHORNE BLVD STE 200
Torrance, CA 90505
Procedures Most Often Billed to Medicare
634 services · 403 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Destruction of precancer skin growth, 2-14 growths | Procedure | 17003 |
293 |
| Destruction of precancer skin growth, 1 growth | Procedure | 17000 |
93 |
| Biopsy of related skin growth, first growth | Procedure | 11102 |
31 |
| Destruction of skin growth, 1-14 growths | Procedure | 17110 |
17 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
200 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other dermatologists at this location 3
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 dermatologists in Torrance 8
Same specialty, same city.
More connections — 8 related providers in 1 group
Also performs Destruction of precancer skin growth, 2-14 growths 8
Providers in CA 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.