Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dianne D Hotmer, MD

Obstetrics & Gynecology Physician in West Chester, PA · enumerated 2005.

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

National Provider Identifier

1407830839

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Registry record

Entity type Individual (Type 1)

Name Dianne D Hotmer

Credential MD

Sex Female

Practice address 915 Old Fern Hill Rd., Bldg D, Suite 600, West Chester, PA, 19380

Phone (610) 692-3434

Fax (610) 692-9005

Enumeration date Nov 30, 2005

Last updated in NPPES Jul 6, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MD048755L (PA) 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
2829459	Other	PA	AETNA
0014850960009	Medicaid	PA	-
769691	Other	PA	BCBS

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

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 Dianne Hotmer?

Dianne Hotmer is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-06.