Katie O'Brien, NP
NPI 1801048921 · Dermatology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katie O'Brien, NP is a Dermatology Physician provider in Worcester, MA (NPI 1801048921).
Provider details
- NPI number
- 1801048921
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 284603 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
1,072 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 | 419 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 277 | $86 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 136 | $52 |
| Biopsy of Related Skin Growth, First Growth11102 | 74 | $93 |
| Destruction of Skin Growth, 1-14 Growths17110 | 61 | $110 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 98 | 37 |
| Clobetasol Propionate | 58 | 33 |
| Metronidazole | 49 | 30 |
| Triamcinolone Acetonide | 46 | 28 |
| Apremilastbrand: Otezla | 25 | — |
| Fluorouracil | 18 | 15 |
| Nystatin | 18 | — |
| Betamethasone Dipropionate | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$426 across 16 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
- 2008-10-21
- Last updated
- 2026-01-26
- Certified
- 2026-01-26
Frequently asked questions
- What is Katie O'Brien's NPI number?
- Katie O'Brien's National Provider Identifier (NPI) is 1801048921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katie O'Brien's specialty?
- Katie O'Brien is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Katie O'Brien located?
- Katie O'Brien's practice location on file with NPPES is 255 Park Ave Ste 509, Worcester, MA 01609-1989.
- What is Katie O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Katie O'Brien is (508) 890-5500.
- Does Katie O'Brien accept Medicare?
- Katie 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 Katie O'Brien's NPI active?
- Yes — Katie O'Brien's NPI (1801048921) is active in the NPPES registry as of the last update on 2026-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.