Melissa Callahan, MD
NPI 1861653438 · Student in an Organized Health Care Education/Training Program · Portsmouth, VA
Melissa Callahan, MD is a Student in an Organized Health Care Education/Training Program provider in Portsmouth, VA (NPI 1861653438).
Provider details
- NPI number
- 1861653438
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
Mailing address
Registry dates
- Enumerated
- 2008-06-17
- Last updated
- 2008-06-17
Frequently asked questions
- What is Melissa Callahan's NPI number?
- Melissa Callahan's National Provider Identifier (NPI) is 1861653438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Callahan's specialty?
- Melissa Callahan is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Melissa Callahan located?
- Melissa Callahan's practice location on file with NPPES is 620 John Paul Jones Cir, Portsmouth, VA 23708-2111.
- What is Melissa Callahan's phone number?
- The practice phone number listed in the NPPES registry for Melissa Callahan is (757) 953-7001.
- Is Melissa Callahan's NPI active?
- Yes — Melissa Callahan's NPI (1861653438) is active in the NPPES registry as of the last update on 2008-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.