Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Marc Christopher Ertz, R.PH.
Pharmacist in La Crosse, WI · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346686300
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Registry record
Entity type Individual (Type 1)
Name Mr. Marc Christopher Ertz
Credential R.PH.
Sex Male
Practice address 4344 Mormon Coulee Rd, La Crosse, WI, 54601
Phone (608) 788-8860
Fax (608) 788-5790
Enumeration date May 17, 2013
Last updated in NPPES May 17, 2013
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH credential
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.
Frequently asked questions
What is the NPI number for Marc Ertz?
The National Provider Identifier (NPI) for Marc Ertz is 1346686300, a Type 1 (individual) record in the CMS NPPES registry.
Where does Marc Ertz practice?
The practice location on file with NPPES is in La Crosse, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Colleen Konkel Optometrist · La Crosse, WI NPI 1528018975 Shopko Stores Operating Co. LLC Eyewear Supplier · La Crosse, WI NPI 1548213184 Shopko Stores Operating Co LLC Community/Retail Pharmacy · La Crosse, WI NPI 1093761447 Ryan Barfknecht Pharmacist · La Crosse, WI NPI 1386997294 Matthew Fernholz Pharmacist · La Crosse, WI NPI 1063851020
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-17.