Karen Callahan, D.D.S.
NPI 1942217724 · Dentist · Sterling, VA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Callahan, D.D.S. is a Dentist provider in Sterling, VA (NPI 1942217724).
Provider details
- NPI number
- 1942217724
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Credential
- D.D.S.
- Sex
- Female
- Sole proprietor
- No
- License
- 0401007004 (VA)
Specialties & taxonomies
Dental Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Callahan's NPI number?
- Karen Callahan's National Provider Identifier (NPI) is 1942217724, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Callahan's specialty?
- Karen Callahan is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Karen Callahan located?
- Karen Callahan's practice location on file with NPPES is 14 Pidgeon Hill Dr, Sterling, VA 20165-6155.
- What is Karen Callahan's phone number?
- The practice phone number listed in the NPPES registry for Karen Callahan is (703) 444-4104.
- Does Karen Callahan accept Medicare?
- Karen Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Callahan's NPI active?
- Yes — Karen Callahan's NPI (1942217724) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.