John Mahdessian, PA
NPI 1639019581 · Student in an Organized Health Care Education/Training Program · Johnson City, TN
John Mahdessian, PA is a Student in an Organized Health Care Education/Training Program provider in Johnson City, TN (NPI 1639019581).
Provider details
- NPI number
- 1639019581
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- PA
- Sex
- Male
- 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
Under 1 yr in 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
- 2026-03-31
- Last updated
- 2026-03-31
- Certified
- 2026-03-31
Frequently asked questions
- What is John Mahdessian's NPI number?
- John Mahdessian's National Provider Identifier (NPI) is 1639019581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mahdessian's specialty?
- John Mahdessian 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 John Mahdessian located?
- John Mahdessian's practice location on file with NPPES is 400 N State of Franklin Rd, Johnson City, TN 37604-6035.
- What is John Mahdessian's phone number?
- The practice phone number listed in the NPPES registry for John Mahdessian is (423) 431-6111.
- Is John Mahdessian's NPI active?
- Yes — John Mahdessian's NPI (1639019581) is active in the NPPES registry as of the last update on 2026-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.