Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. John Mark Irby, FNP

Individual provider Family Nurse Practitioner · NPI 1962968040

Mr. John Mark Irby, FNP is a Family Nurse Practitioner in McComb, Mississippi. Licensed in Mississippi. Registered with an NPI since 2019.

Licensed in
MS
In the registry since
2019
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

215 Marion Ave
McComb, MS 39648-2705
Phone: (601) 249-5500
Fax: (601) 249-1173
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 903116 (MS)

Record details

NPI number1962968040
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorNo
NPI enumeratedFebruary 14, 2019
Last updated in NPPESJanuary 22, 2020
Certification dateJanuary 22, 2020
Mailing addressPo Box 490, McComb, MS 39649-0490

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