Larissa Larsen, M.D.
NPI 1063733426 · Dermatology Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larissa Larsen, M.D. is a Dermatology Physician provider in Ventura, CA (NPI 1063733426).
Provider details
- NPI number
- 1063733426
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A118359 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,501 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 693 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 291 | $145 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 279 | $187 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 278 | $61 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 225 | $103 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Betamethasone Dipropionate | 148 | 83 |
| Triamcinolone Acetonide | 117 | 91 |
| Ketoconazole | 79 | 36 |
| Fluorouracil | 72 | 67 |
| Clobetasol Propionate | 38 | 26 |
| Metronidazole | 38 | 24 |
| Doxycycline Hyclate | 36 | 20 |
| Clindamycin Phosphate | 32 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-06-18
- Last updated
- 2024-01-04
- Certified
- 2024-01-04
Frequently asked questions
- What is Larissa Larsen's NPI number?
- Larissa Larsen's National Provider Identifier (NPI) is 1063733426, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larissa Larsen's specialty?
- Larissa Larsen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Larissa Larsen located?
- Larissa Larsen's practice location on file with NPPES is 6633 Telephone Rd Ste 100, Ventura, CA 93003-5569.
- What is Larissa Larsen's phone number?
- The practice phone number listed in the NPPES registry for Larissa Larsen is (310) 644-9121.
- Does Larissa Larsen accept Medicare?
- Larissa Larsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larissa Larsen's NPI active?
- Yes — Larissa Larsen's NPI (1063733426) is active in the NPPES registry as of the last update on 2024-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.