Jonathan O'Brien, M.D.
NPI 1922233824 · Maternal & Fetal Medicine Physician · Livingston, NJ
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan O'Brien, M.D. is a Maternal & Fetal Medicine Physician provider in Livingston, NJ (NPI 1922233824).
Provider details
- NPI number
- 1922233824
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA09242900 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-05-20
- Last updated
- 2015-11-12
Frequently asked questions
- What is Jonathan O'Brien's NPI number?
- Jonathan O'Brien's National Provider Identifier (NPI) is 1922233824, 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 Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan O'Brien located?
- Jonathan O'Brien's practice location on file with NPPES is 94 Old Short Hills Rd, Livingston, NJ 07039-5672.
- What is Jonathan O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Jonathan O'Brien is (973) 322-5287.
- 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 (1922233824) is active in the NPPES registry as of the last update on 2015-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.