Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Christine Callahan, CNM
Midwife in Fairfax, VA · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255984704
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Registry record
Entity type Individual (Type 1)
Name Christine Callahan
Credential CNM
Sex Female
Practice address 3650 Joseph Siewick Dr Ste 203, Fairfax, VA, 22033
Phone (703) 391-1500
Enumeration date Jul 23, 2019
Last updated in NPPES Jul 23, 2019
Taxonomy & licenses
CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care.
About the CNM credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Christine Callahan?
Christine Callahan is registered in NPPES with the primary taxonomy of Midwife. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-23.