Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Allen Gregg South, M.D.

Gynecology Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1295784569

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Registry record

Entity type Individual (Type 1)

Name Dr. Allen Gregg South

Credential M.D.

Sex Male

Practice address 1229 Madison St, Suite 610, Seattle, WA, 98104

Phone (206) 709-8600

Fax (206) 215-2690

Enumeration date May 6, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License MD00013266 (WA) 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
1826304	Medicaid	WA	-
06038900	Other	WA	L AND I

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

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.

What specialty is Allen South?

Allen South is registered in NPPES with the primary taxonomy of Gynecology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.