Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Derald L Seid D O A Medical Corporation

Endocrinology, Diabetes & Metabolism Physician in San Francisco, CA · enumerated 2005 · authorized official Derald Seid, President.

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

National Provider Identifier

1760466577

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Registry record

Entity type Organization (Type 2)

Legal business name Derald L Seid D O A Medical Corporation

Practice address 2250 Hayes St, Suite 500, San Francisco, CA, 94117

Phone (415) 221-1901

Fax (415) 221-1903

Enumeration date Dec 5, 2005

Last updated in NPPES Jul 2, 2015

Taxonomy & classification

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 20A4784 (CA) Primary

Authorized official

Name Derald Seid

Title President

Phone (415) 221-1901

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 type of organization is Derald L Seid D O A Medical Corporation?

Derald L Seid D O A Medical Corporation is registered in NPPES as a Endocrinology, Diabetes & Metabolism Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-02.