What is John O'Brien's NPI number?

John O'Brien's National Provider Identifier (NPI) is 1629120209, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John O'Brien's specialty?

John O'Brien is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).

Where is John O'Brien located?

John O'Brien's practice location on file with NPPES is 5301 E State St, Rockford, IL 61108-2901.

What is John O'Brien's phone number?

The practice phone number listed in the NPPES registry for John O'Brien is (815) 399-2542.

Is John O'Brien's NPI active?

Yes — John O'Brien's NPI (1629120209) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

John O'Brien, DDS

NPI 1629120209 · General Practice Dentistry · Rockford, IL

John O'Brien, DDS is a General Practice Dentistry provider in Rockford, IL (NPI 1629120209).

Provider details

NPI number: 1629120209
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: DDS
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

General Practice DentistryPrimary1223G0001X
Dental Providers

Profile Score

Detailed profile(83/100 index)

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

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
83% 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

5301 E State St

Suite 306

Rockford, IL 61108-2901

Phone: (815) 399-2542

Street-level locationGet directions

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Mailing address