Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Carolyn Elizabeth Diponio, DPM

Podiatrist in Grayling, MI · enumerated 2006 · practices at Geoffrey M. Day Dpm PC.

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

National Provider Identifier

1649216128

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Elizabeth Diponio

Credential DPM

Sex Female

Practice address Grayling, MI, 49738

Phone (989) 348-3090

Fax (989) 348-9547

Enumeration date Jun 21, 2006

Last updated in NPPES Aug 31, 2009

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

Taxonomy & licenses

213E00000X Podiatrist Podiatric Medicine & Surgery Service Providers · License CD000556 (MI) Primary

DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier	Type	State	Issuer
132103553	Medicaid	MI	-

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.

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Frequently asked questions

What specialty is Carolyn Diponio?

Carolyn Diponio is registered in NPPES with the primary taxonomy of Podiatrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Other providers at this practice address

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Geoffrey M. Day Dpm PC Primary Podiatric Medicine Podiatrist · Grayling, MI NPI 1265748586

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-31.