OrganizationActive
John R Callahan DDS Assoc
NPI 1972511947 · Dentist · Ridley Park, PA
John R Callahan DDS Assoc is a Dentist organization in Ridley Park, PA (NPI 1972511947).
Provider details
- NPI number
- 1972511947
- Entity type
- Organization
- Primary specialty
- DentistDental Providers
- Organization subpart
- No
- Authorized official
- John Callahan, Pres John C Callahan DDS Assoc(610) 532-3921
- License
- PA 12658 (PA)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(91/100 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
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
101 E Ward Ave
Ridley Park, PA 19078
Phone: (610) 532-3921
Street-level locationGet directions
Mailing address
101 E Ward Ave
Ridley Park, PA 19078
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2020-08-22
Frequently asked questions
- What is John R Callahan DDS Assoc's NPI number?
- John R Callahan DDS Assoc's National Provider Identifier (NPI) is 1972511947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John R Callahan DDS Assoc?
- John R Callahan DDS Assoc is classified in the NPPES registry as Dentist (Dental Providers).
- Where is John R Callahan DDS Assoc located?
- John R Callahan DDS Assoc's practice location on file with NPPES is 101 E Ward Ave, Ridley Park, PA 19078.
- What is John R Callahan DDS Assoc's phone number?
- The practice phone number listed in the NPPES registry for John R Callahan DDS Assoc is (610) 532-3921.
- Who is the authorized official for John R Callahan DDS Assoc?
- The authorized official listed on John R Callahan DDS Assoc's NPPES record is John Callahan, Pres John C Callahan DDS Assoc. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John R Callahan DDS Assoc's NPI active?
- Yes — John R Callahan DDS Assoc's NPI (1972511947) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.