Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane E Vonstein, M.D.

Orthopaedic Surgery Physician in Upper Sandusky, OH · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1346274875

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Diane E Vonstein

Credential M.D.

Sex Female

Practice address 885 N Sandusky Ave, Upper Sandusky, OH, 43351

Phone (419) 294-4991

Fax (419) 209-0278

Enumeration date Jul 10, 2006

Last updated in NPPES Apr 20, 2021

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 01064725A (IN) Secondary

207XP3100X Pediatric Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 28915 (OK) Secondary

207XP3100X Pediatric Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 35048926 (OH) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 35048926 (OH) Primary

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
000000550234	Other	IN	ANTHEM PROVIDER NUMBER
200372360	Medicaid	IN	-
0559766	Medicaid	OH	-

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 → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Diane Vonstein?

Diane Vonstein is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-20.