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MELISSA DIACON
NPI 1427425594
Nurse Practitioner - Psychiatric/Mental Health in Oklahoma City, OK

Active since August 25, 2015
4400 N LINCOLN BLVD, OKLAHOMA CITY, OK 73105(405) 424-7711 Get Directions Write a Review

NPPES record last updated: April 23, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 23, 2026, Jun 29, 2017 (2 updates tracked since 2017).

About Melissa Diacon NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MELISSA DIACON (NPI 1427425594) is an individual psychiatric/mental health provider in Oklahoma City, Oklahoma, licensed in Oklahoma (215276) and active in the NPI registry since August 2015.

NPPES Registry Identity

NPI1427425594
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMELISSA DIACON
Location Address4400 N LINCOLN BLVDOklahoma City, OK 73105-5104
Mailing Address2710 Bowen LnAda, OK 74820-6711 · (580) 272-8748
Phone(405) 424-7711
Sole ProprietorYes
Enumeration DateAugust 25, 2015
Last NPPES UpdateApril 23, 20262 updates tracked since enumeration
NPPES CertifiedApril 23, 2026
✔ NPI 1427425594 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in OK · 215276
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
4400 N LINCOLN BLVD, Oklahoma City, OK 73105
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VALERIE DENISE MOSLEY
Counselor (Mental Health)
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 425-0341
SABINA GURUNG MPH
Counselor (Mental Health)
4400 N LINCOLN BLVD, RED ROCK BEHAVIORAL HEALTH SERVICES
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 425-4096
LORI KAY DENNIS
Case Manager/Care Coordinator
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 424-7711
JOSEPH BEACH MAPLE II
Case Manager/Care Coordinator
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 424-7711
MARIAH PEYTON
Case Manager/Care Coordinator
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 424-7711
CHRISTOPHER HAMPTON
Specialist/Technologist (Athletic Trainer)
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 424-7711
MADALYNN RYANN MCCAIN
Case Manager/Care Coordinator
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 307-4800
MELANIE REESE
Social Worker (Clinical)
4400 N LINCOLN BLVD
OKLAHOMA CITY, OK 73105
Oklahoma County (405) 424-7711

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Melissa Diacon's NPI number?

The NPI number for Melissa Diacon is 1427425594. It was assigned to this individual provider in the NPPES registry on August 25, 2015.

Where is Melissa Diacon located?

Melissa Diacon practices at 4400 N Lincoln Blvd, Oklahoma City, OK 73105. The listed phone number is (405) 424-7711.

What is Melissa Diacon's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

What insurance does Melissa Diacon accept?

Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Melissa Diacon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Melissa Diacon was last updated on April 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.