What is Robert O'Brien's NPI number?

Robert O'Brien's National Provider Identifier (NPI) is 1245654797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Robert O'Brien's specialty?

Robert O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Robert O'Brien located?

Robert O'Brien's practice location on file with NPPES is 523 E 72nd St Fl 2, New York, NY 10021-4099.

What is Robert O'Brien's phone number?

The practice phone number listed in the NPPES registry for Robert O'Brien is (212) 606-1844.

Is Robert O'Brien's NPI active?

Yes — Robert O'Brien's NPI (1245654797) is active in the NPPES registry as of the last update on 2024-11-07.

IndividualActive

Robert O'Brien, PA-C

NPI 1245654797 · Physician Assistant · New York, NY

Robert O'Brien, PA-C is a Physician Assistant provider in New York, NY (NPI 1245654797).

Provider details

NPI number: 1245654797
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Male
Sole proprietor: No
License: 25MP00329700 (NJ)

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense 019211 (NY)
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistant363A00000XLicense 25MP00329700 (NJ)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Detailed profile(85/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
12 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
5 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.

Practice location

523 E 72nd St Fl 2

New York, NY 10021-4099

Phone: (212) 606-1844

Fax: (212) 746-8744

Street-level locationGet directions

More NY providers

Mailing address

535 E 70th St

New York, NY 10021-4823

Additional practice locations (4)

400 Franklin Tpke Ste 200
Mahwah, NJ 07430-3518
Phone: (212) 606-1844
Fax: (212) 746-8744
140 E Ridgewood Ave Ste 175s
Paramus, NJ 07652-3917
Phone: (212) 606-1844
Fax: (212) 746-8744
15 E Midland Ave Ste 1a
Paramus, NJ 07652-2926
Phone: (212) 606-1844
Fax: (212) 746-8744
535 E 70th St
New York, NY 10021-4823
Phone: (212) 606-1844
Fax: (212) 746-8744

Enumerated: 2014-02-04
Last updated: 2024-11-07
Certified: 2024-11-07

Frequently asked questions

What is Robert O'Brien's NPI number?: Robert O'Brien's National Provider Identifier (NPI) is 1245654797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Robert O'Brien's specialty?: Robert O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Robert O'Brien located?: Robert O'Brien's practice location on file with NPPES is 523 E 72nd St Fl 2, New York, NY 10021-4099.
What is Robert O'Brien's phone number?: The practice phone number listed in the NPPES registry for Robert O'Brien is (212) 606-1844.
Is Robert O'Brien's NPI active?: Yes — Robert O'Brien's NPI (1245654797) is active in the NPPES registry as of the last update on 2024-11-07.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.