Doctor profile · Federal record
Dr. Mark Horowitz, DO
Dermatology Physician · Mohs-Micrographic Surgery Physician · Dermatopathology Physician · Clinical & Laboratory Dermatological Immunology Physician · Pediatric Dermatology Physician · Procedural Dermatology Physician · Torrance, CA
- NPI 1669413878
- MIPS 77.9 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
23550 Hawthorne Blvd Ste 200
Torrance, CA 905054722
(310) 373-2636 - Mailing address
-
23550 Hawthorne Blvd., #200
Torrance, CA 905054722
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- January 17, 2014
- Specialty taxonomy
- 207N00000X — NUCC code
- State license (1)
- California #20A7642
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669413878. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,848
Distinct HCPCS
10
Medicare allowed
$360,925
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 1,266 | 206 | $8 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 891 | 564 | $98 | |
0394T |
High dose rate electronic brachytherapy, external | 418 | 38 | $164 | |
17000 |
Destruction of precancer skin growth, 1 growth | 358 | 275 | $63 | |
77280 |
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 301 | 36 | $315 | |
11102 |
Biopsy of related skin growth, first growth | 149 | 139 | $102 | |
17004 |
Destruction of precancer skin growth, 15 or more growths | 66 | 40 | $191 | |
17110 |
Destruction of skin growth, 1-14 growths | 62 | 59 | $117 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 62 | 62 | $122 | |
17262 |
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | 55 | 33 | $163 |
In context: peer comparison
Among 13 peers in Torrance Dermatology Physician, average services per provider: 250. This provider delivers 15× the peer median.Open Payments
Industry payments received
All-time total
$71
Transactions
3
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, INC. | 1 | $25.96 | |
| Novartis Pharmaceuticals Corporation | 1 | $25.60 | |
| Galderma Laboratories, L.P. | 1 | $19.50 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
356
Patients
214
Total drug cost
$10,908
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Triamcinolone Acetonide | Generic | 101 | 90 | $998 |
| Ketoconazole | Generic | 43 | 19 | $835 |
| Ciclopirox | Generic | 41 | 13 | $1,665 |
| Clobetasol Propionate | Generic | 41 | 25 | $1,872 |
| Fluorouracil | Generic | 36 | 32 | $3,046 |
| Doxycycline Hyclate | Generic | 23 | 0 | $443 |
| Fluocinonide | Generic | 15 | 0 | $775 |
| Mupirocin | Generic | 15 | 12 | $199 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 15 | 11 | $351 |
| Betamethasone Diprop Augmented (Betamethasone/Propylene Glyc) | Brand | 13 | 0 | $404 |
Frequently asked questions
What is Dr. Mark Horowitz's medical specialty?
Dr. Mark Horowitz practices Dermatology Physician in Torrance, CA.
Where does Dr. Mark Horowitz practice?
Dr. Mark Horowitz practices at 23550 Hawthorne Blvd Ste 200, Torrance, CA 905054722. Office phone: 3103732636.
What is Dr. Mark Horowitz's NPI?
Dr. Mark Horowitz's National Provider Identifier (NPI) is 1669413878, issued by NPPES.
What procedures does Dr. Mark Horowitz commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213); High dose rate electronic brachytherapy, external (HCPCS 0394T). Source: CMS Medicare Physician & Other Practitioners file.