Morgan O'Brien, MS, PA-C
NPI 1114557329 · Physician Assistant · Carlsbad, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Morgan O'Brien, MS, PA-C is a Physician Assistant provider in Carlsbad, CA (NPI 1114557329).
Provider details
- NPI number
- 1114557329
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MS, PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
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
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
205 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 105 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 87 | $84 |
| Automated Urinalysis Test81003 | 13 | $2 |
Typical Medicare-allowed amounts for these services range $2–$118 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 66 | 58 |
| Atorvastatin Calcium | 49 | 22 |
| Losartan Potassium | 39 | 15 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 37 | 18 |
| Ciprofloxacin Hcl | 37 | 29 |
| Amlodipine Besylate | 34 | 17 |
Practice location
Mailing address
Additional practice locations (1)
- 145 Thunder DrVista, CA 92083-6010Phone: (760) 941-9002
Registry dates
- Enumerated
- 2020-01-16
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Morgan O'Brien's NPI number?
- Morgan O'Brien's National Provider Identifier (NPI) is 1114557329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Morgan O'Brien's specialty?
- Morgan O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Morgan O'Brien located?
- Morgan O'Brien's practice location on file with NPPES is 2910 Jefferson St Ste 100102, Carlsbad, CA 92008-2356.
- What is Morgan O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Morgan O'Brien is (760) 729-8600.
- Does Morgan O'Brien accept Medicare?
- Morgan 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 Morgan O'Brien's NPI active?
- Yes — Morgan O'Brien's NPI (1114557329) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.