Sara O'Brien, MSN, FNP-C, TCRN
NPI 1235896523 · Family Nurse Practitioner · Aberdeen, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sara O'Brien, MSN, FNP-C, TCRN is a Family Nurse Practitioner provider in Aberdeen, MD (NPI 1235896523).
Provider details
- NPI number
- 1235896523
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, FNP-C, TCRN
- Sex
- Female
- Sole proprietor
- No
- License
- AC004061 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
232 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 132 | $76 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 54 | $92 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 18 | $16 |
| Automated Urinalysis Test81003 | 17 | $2 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 11 | $16 |
Typical Medicare-allowed amounts for these services range $2–$92 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 27 |
| Doxycycline Hyclate | 21 | 21 |
| Cephalexin | 20 | 20 |
| Prednisone | 19 | 17 |
| Fluticasone Propionate | 18 | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 | 15 |
| Ipratropium Bromide | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-11-21
- Last updated
- 2024-08-23
- Certified
- 2024-08-23
Frequently asked questions
- What is Sara O'Brien's NPI number?
- Sara O'Brien's National Provider Identifier (NPI) is 1235896523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sara O'Brien's specialty?
- Sara O'Brien is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sara O'Brien located?
- Sara O'Brien's practice location on file with NPPES is 744 S Philadelphia Blvd Ste B, Aberdeen, MD 21001-3655.
- What is Sara O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Sara O'Brien is (443) 345-2650.
- Does Sara O'Brien accept Medicare?
- Sara 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 Sara O'Brien's NPI active?
- Yes — Sara O'Brien's NPI (1235896523) is active in the NPPES registry as of the last update on 2024-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.