Marie O'Brien, D.O.
NPI 1083836464 · Rheumatology Physician · Allentown, PA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marie O'Brien, D.O. is a Rheumatology Physician provider in Allentown, PA (NPI 1083836464).
Provider details
- NPI number
- 1083836464
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- OS012497 (PA)
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
19 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
1,114 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 409 | $92 |
| 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 | 337 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 67 | $102 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 65 | $63 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 51 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 472 | 122 |
| Methotrexate Sodiumbrand: Methotrexate | 259 | 70 |
| Gabapentin | 239 | 69 |
| Prednisone | 224 | 90 |
| Allopurinol | 121 | 24 |
| Meloxicam | 109 | 38 |
| Duloxetine Hcl | 99 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$370 across 4 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
- 2007-05-03
- Last updated
- 2015-11-18
Frequently asked questions
- What is Marie O'Brien's NPI number?
- Marie O'Brien's National Provider Identifier (NPI) is 1083836464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marie O'Brien's specialty?
- Marie O'Brien is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Marie O'Brien located?
- Marie O'Brien's practice location on file with NPPES is 3080 Hamilton Blvd, Allentown, PA 18103-3694.
- What is Marie O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Marie O'Brien is (610) 776-5038.
- Does Marie O'Brien accept Medicare?
- Marie 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 Marie O'Brien's NPI active?
- Yes — Marie O'Brien's NPI (1083836464) is active in the NPPES registry as of the last update on 2015-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.