Margaret O'Brien, MD
NPI 1639871080 · Dermatology Physician · Philadelphia, PA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret O'Brien, MD is a Dermatology Physician provider in Philadelphia, PA (NPI 1639871080).
Provider details
- NPI number
- 1639871080
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- MT229719 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
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 |
|---|---|---|
| Clobetasol Propionate | 35 | 25 |
| Triamcinolone Acetonide | 33 | 25 |
| Dupilumabbrand: Dupixent Pen | 25 | 11 |
| Hydrocortisone | 22 | 16 |
| Tacrolimus | 18 | — |
| Ketoconazole | 17 | — |
| Doxycycline Monohydrate | 15 | 11 |
| Terbinafine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$627 across 7 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
- 2023-03-20
- Last updated
- 2024-07-09
- Certified
- 2024-07-09
Frequently asked questions
- What is Margaret O'Brien's NPI number?
- Margaret O'Brien's National Provider Identifier (NPI) is 1639871080, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret O'Brien's specialty?
- Margaret O'Brien is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret O'Brien located?
- Margaret O'Brien's practice location on file with NPPES is 3401 N Broad St Fl B5, Philadelphia, PA 19140-5189.
- What is Margaret O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Margaret O'Brien is (215) 707-3376.
- Does Margaret O'Brien accept Medicare?
- Margaret 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 Margaret O'Brien's NPI active?
- Yes — Margaret O'Brien's NPI (1639871080) is active in the NPPES registry as of the last update on 2024-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.