Jonathan O'Brien, PA-C
NPI 1851872378 · Physician Assistant · North Highlands, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan O'Brien, PA-C is a Physician Assistant provider in North Highlands, CA (NPI 1851872378).
Provider details
- NPI number
- 1851872378
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 57662 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Duloxetine Hcl | 129 | 25 |
| Trazodone Hcl | 95 | 22 |
| Quetiapine Fumarate | 95 | 22 |
| Mirtazapine | 88 | 18 |
| Sertraline Hcl | 72 | 14 |
| Aripiprazole | 71 | 17 |
| Buspirone Hcl | 65 |
Practice location
Mailing address
Additional practice locations (2)
- 7210 Murray DrStockton, CA 95210-3339Phone: (209) 373-2800
- 2600 W 9th StChester, PA 19013-2040Phone: (610) 494-0700
Registry dates
- Enumerated
- 2018-08-23
- Last updated
- 2022-05-27
- Certified
- 2022-05-27
Frequently asked questions
- What is Jonathan O'Brien's NPI number?
- Jonathan O'Brien's National Provider Identifier (NPI) is 1851872378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan O'Brien's specialty?
- Jonathan O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jonathan O'Brien located?
- Jonathan O'Brien's practice location on file with NPPES is 4815 Watt Ave, North Highlands, CA 95660-5108.
- What is Jonathan O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Jonathan O'Brien is (916) 454-2345.
- Does Jonathan O'Brien accept Medicare?
- Jonathan 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 Jonathan O'Brien's NPI active?
- Yes — Jonathan O'Brien's NPI (1851872378) is active in the NPPES registry as of the last update on 2022-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.