Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexandra Lee Haessler, M.D.

Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician in San Francisco, CA · enumerated 2007.

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

National Provider Identifier

1407998164

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexandra Lee Haessler

Credential M.D.

Sex Female

Practice address 1100 Van Ness Ave, San Francisco, CA, 94109

Phone (415) 600-0910

Fax (415) 369-1305

Enumeration date Feb 12, 2007

Last updated in NPPES May 26, 2021

Taxonomy & licenses

207VF0040X Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician Allopathic & Osteopathic Physicians · License A69765 (CA) 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
A69765	Other	CA	STATE MEDICAL LICENSE

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

What specialty is Alexandra Haessler?

Alexandra Haessler is registered in NPPES with the primary taxonomy of Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) 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 2021-05-26.