NPI Portal NPI Lookup & Verification

Mary Ellen Weimer, M.D.

Mary Ellen Weimer is a Ophthalmology Physician provider (Ophthalmology) practicing in Beavercreek, OH, registered in the NPPES registry with NPI 1205256708 since 2014. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1205256708
Entity type Individual (Type 1)
Name Mary Ellen Weimer
Credential M.D.
Sex Female
Practice address Beavercreek, OH, 45440
Phone 9373202020
Enumeration date 2014-04-23
Last updated in NPPES 2023-07-19

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
207W00000X Ophthalmology Physician Primary 35134285 OH

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
0375674 Medicaid OH
Copy-ready billing details
Provider: Mary Weimer, M.D.
NPI: 1205256708
Taxonomy: 207W00000X (Ophthalmology Physician)
Address: Beavercreek, OH, 45440

Verify this record

Cross-check NPI 1205256708 against the authoritative CMS record: view Mary Ellen Weimer 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

What is the NPI number for Mary Weimer?
The National Provider Identifier (NPI) for Mary Weimer is 1205256708, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Weimer practice?
The practice location on file with NPPES is in Beavercreek, OH. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-07-19.