Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sara Davis Schalk, OD
Optometrist in Appleton, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275617300
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Registry record
Entity type Individual (Type 1)
Name Dr. Sara Davis Schalk
Credential OD
Sex Female
Practice address 21 Park Pl, Appleton, WI, 54914
Phone (920) 739-4361
Enumeration date Oct 25, 2006
Last updated in NPPES Mar 26, 2013
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2974 | Other | WI | LICENSE |
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 Sara Schalk?
The National Provider Identifier (NPI) for Sara Schalk is 1275617300, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sara Schalk practice?
The practice location on file with NPPES is in Appleton, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Marvin Hall Ophthalmology Physician · Appleton, WI NPI 1285674655 Dean Delwiche Optometrist · Appleton, WI NPI 1669417135 Micheal Vrabec Ophthalmology Physician · Appleton, WI NPI 1407883838 James Syverud Ophthalmology Physician · Appleton, WI NPI 1750319448 Melissa Metzger-Romatz Optometrist · Appleton, WI NPI 1952330714 F.Jeanne Sengstock Optometrist · Appleton, WI NPI 1902838998 Elizabeth Melchert Optometrist · Appleton, WI NPI 1992739171 Valley Eye Associates Optometrist · Appleton, WI NPI 1699789032
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-26.