What is Mark Seymour's NPI number?

Mark Seymour's National Provider Identifier (NPI) is 1841520178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Seymour's specialty?

Mark Seymour is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).

Where is Mark Seymour located?

Mark Seymour's practice location on file with NPPES is 710 Cleveland Ave, Fremont, OH 43420-3224.

What is Mark Seymour's phone number?

The practice phone number listed in the NPPES registry for Mark Seymour is (419) 334-6619.

Does Mark Seymour accept Medicare?

Mark Seymour is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Seymour's NPI active?

Yes — Mark Seymour's NPI (1841520178) is active in the NPPES registry as of the last update on 2024-04-12.

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Mark Seymour, P.C.C.

NPI 1841520178 · Professional Counselor · Fremont, OH

Mark Seymour, P.C.C. is a Professional Counselor provider in Fremont, OH (NPI 1841520178).

Provider details

NPI number: 1841520178
Entity type: Individual
Primary specialty: Professional CounselorBehavioral Health & Social Service Providers
Credential: P.C.C.
Sex: Male
Sole proprietor: No
License: C0005669 (OH)

Practice location

710 Cleveland Ave

Fremont, OH 43420-3224

Phone: (419) 334-6619

Fax: (419) 334-6663

Street-level locationGet directions

More OH providers

Mailing address

1925 Hayes Ave

Sandusky, OH 44870-4737

Specialties & taxonomies

Professional CounselorPrimary101YP2500XLicense E 0005669 (OH)
Behavioral Health & Social Service Providers
Mental Health Counselor101YM0800XLicense C0005669 (OH)
Behavioral Health & Social Service Providers

Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(85/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
16 yrs in NPPES registry
Profile completeness38% of score
100% 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.

Enumerated: 2010-01-08
Last updated: 2024-04-12
Certified: 2024-04-12

Frequently asked questions

What is Mark Seymour's NPI number?: Mark Seymour's National Provider Identifier (NPI) is 1841520178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Seymour's specialty?: Mark Seymour is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
Where is Mark Seymour located?: Mark Seymour's practice location on file with NPPES is 710 Cleveland Ave, Fremont, OH 43420-3224.
What is Mark Seymour's phone number?: The practice phone number listed in the NPPES registry for Mark Seymour is (419) 334-6619.
Does Mark Seymour accept Medicare?: Mark Seymour is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Seymour's NPI active?: Yes — Mark Seymour's NPI (1841520178) is active in the NPPES registry as of the last update on 2024-04-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions