Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. FORREST E DIEHL L.P.C.C.
NPI 1164420865
Counselor in Ashtabula, OH

Q: What is Forrest Diehl's NPI number?

The NPI number for Forrest Diehl is 1164420865. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Q: What is Forrest Diehl's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Forrest Diehl was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.

Active since July 07, 2005

1907 AETNA RD, ASHTABULA, OH 44004(440) 992-7565(440) 257-7997 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mr. Forrest E Diehl L.p.c.c. NPPES

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

MR. FORREST E DIEHL L.P.C.C. (NPI 1164420865) is an individual counselor in Ashtabula, Ohio, licensed in Ohio (E1439) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1164420865

Entity TypeIndividualMale

Primary Taxonomy101Y00000X

Provider Legal NameMR. FORREST E DIEHLCredential: L.P.C.C.

Location Address1907 AETNA RDAshtabula, OH 44004-6259

Mailing AddressPo Box 607Chardon, OH 44024-0607 · (440) 992-7565 · Fax (440) 257-7997

Phone(440) 992-7565

Fax(440) 257-7997

Sole ProprietorNo

Enumeration DateJuly 7, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1164420865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers

Taxonomy Code101Y00000X

License✔ Licensed in OH · E1439

Definition

A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

1907 AETNA RD, Ashtabula, OH 44004

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include MedMutual, Molina Healthcare, Oscar Health Insurance and more.Insurance ›

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 Forrest Diehl's NPI number?

The NPI number for Forrest Diehl is 1164420865. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Where is Forrest Diehl located?

Forrest Diehl practices at 1907 Aetna Rd, Ashtabula, OH 44004. The listed phone number is (440) 992-7565.

What is Forrest Diehl's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

What insurance does Forrest Diehl accept?

Health plans from MedMutual, Molina Healthcare, Oscar Health Insurance, Oscar Insurance Corporation of Ohio and Providence Health Plan and 1 other insurer list Forrest Diehl 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 Forrest Diehl was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.