Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harcharan Singh

Allergy & Immunology Physician in Centerville, OH · enumerated 2005.

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

National Provider Identifier

1861484800

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Registry record

Entity type Individual (Type 1)

Name Harcharan Singh

Sex Male

Practice address 8419 Yankee Street, Centerville, OH, 45458

Phone (937) 297-8300

Fax (937) 910-0900

Enumeration date Aug 16, 2005

Last updated in NPPES Jul 7, 2026

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 214027 (NY) Primary

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

What specialty is Harcharan Singh?

Harcharan Singh is registered in NPPES with the primary taxonomy of Allergy & Immunology Physician. 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.

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