Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Louis Kirstein, DMD

Dentist in Springfield, MA · enumerated 2007.

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

National Provider Identifier

1427115062

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Registry record

Entity type Individual (Type 1)

Name Robert Louis Kirstein

Credential DMD

Sex Male

Practice address 1795 Main St, Suite 101, Springfield, MA, 01103

Phone (413) 737-9548

Enumeration date Jan 2, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License 13212 (MA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
0248339	Medicaid	MA	-

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 Robert Kirstein?

Robert Kirstein is registered in NPPES with the primary taxonomy of Dentist. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.