Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexandra Selim Theisen, M.D.

Physical Medicine & Rehabilitation Physician in Chelsea, MI · enumerated 2007.

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

National Provider Identifier

1124169040

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Registry record

Entity type Individual (Type 1)

Name Alexandra Selim Theisen

Credential M.D.

Sex Female

Practice address 14700 E Old Us Highway 12, Chelsea, MI, 48118

Phone (734) 936-7175

Enumeration date Feb 12, 2007

Last updated in NPPES Jan 24, 2024

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License AT67486 (MI) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 4301067486 (MI) 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
104217061	Medicaid	MI	-
AT067486	Other	-	BCBS
250011706	Other	-	RAILROAD MEDICARE
127928	Other	-	CARE CHOICES
DR810358	Other	-	MCARE

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

How do I verify Alexandra Theisen's NPI record?

Cross-check NPI 1124169040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124169040 active?

Yes, as of the latest NPPES snapshot, NPI 1124169040 is active (record last updated 2024-01-24).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-24.