Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephan Charles Lange, M.D.

Neurological Surgery Physician in Hartford, CT · enumerated 2006.

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

National Provider Identifier

1255372728

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephan Charles Lange

Credential M.D.

Sex Male

Practice address 1000 Asylum Ave, Suite 3208, Hartford, CT, 06105

Phone (860) 522-7121

Fax (860) 244-3516

Enumeration date Jun 8, 2006

Last updated in NPPES Mar 15, 2018

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 025612 (CT) 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
004001442	Medicaid	CT	-

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 Stephan Lange?

Stephan Lange is registered in NPPES with the primary taxonomy of Neurological Surgery 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-15.