Kathleen O'Brien
NPI 1134681364 · Dermatology Physician · Encinitas, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen O'Brien is a Dermatology Physician provider in Encinitas, CA (NPI 1134681364).
Provider details
- NPI number
- 1134681364
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- A179379 (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
7 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
5,144 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 | 1,930 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 581 | $97 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 574 | $59 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 396 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 365 | $137 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 211 | 118 |
| Triamcinolone Acetonide | 99 | 70 |
| Clobetasol Propionate | 50 | 31 |
| Mupirocin | 33 | 30 |
| Clindamycin Phosphate | 30 | 17 |
| Fluorouracil | 28 | 25 |
| Tacrolimus | 28 | 23 |
| Hydrocortisone | 26 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$475 across 20 records (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
- 2019-04-05
- Last updated
- 2025-03-26
- Certified
- 2025-03-26
Frequently asked questions
- What is Kathleen O'Brien's NPI number?
- Kathleen O'Brien's National Provider Identifier (NPI) is 1134681364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen O'Brien's specialty?
- Kathleen O'Brien is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen O'Brien located?
- Kathleen O'Brien's practice location on file with NPPES is 326 Santa Fe Dr, Encinitas, CA 92024-5156.
- What is Kathleen O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Kathleen O'Brien is (760) 633-7234.
- Does Kathleen O'Brien accept Medicare?
- Kathleen O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen O'Brien's NPI active?
- Yes — Kathleen O'Brien's NPI (1134681364) is active in the NPPES registry as of the last update on 2025-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.