Mr. Christopher Messmer

Mr. Christopher Messmer is a Psychiatric/Mental Health Nurse Practitioner provider (Nurse Practitioner) practicing in Bexley, OH, registered in the NPPES registry with NPI 1134882939 since 2021.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1134882939
Entity type	Individual (Type 1)
Name	Mr. Christopher Messmer
Sex	Male
Practice address	Bexley, OH, 43209
Phone	6144993200
Enumeration date	2021-10-19
Last updated in NPPES	2021-10-19

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
363LP0808X	Psychiatric/Mental Health Nurse Practitioner	Primary	0030011	OH

Copy-ready billing details

Provider: Christopher Messmer
NPI: 1134882939
Taxonomy: 363LP0808X (Psychiatric/Mental Health Nurse Practitioner)
Address: Bexley, OH, 43209

Verify this record

Cross-check NPI 1134882939 against the authoritative CMS record: view Mr. Christopher Messmer on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where does Christopher Messmer practice?

The practice location on file with NPPES is in Bexley, OH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Christopher Messmer?

The National Provider Identifier (NPI) for Christopher Messmer is 1134882939, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-10-19.