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Gregory J Porter MD Inc

Anesthesiology Physician in Grass Valley, CA · enumerated 2008 · authorized official Gregory Porter, President.

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

National Provider Identifier

1588849954

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Registry record

Entity type Organization (Type 2)
Legal business name Gregory J Porter MD Inc
Practice address 400 Sierra College Dr Ste B, Grass Valley, CA, 95945
Phone (530) 272-3428
Fax (530) 272-3429
Enumeration date Jan 4, 2008
Last updated in NPPES Oct 11, 2023

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License G72310 (CA) Primary
207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License G72310 (CA) Secondary

Authorized official

Name Gregory Porter
Title President
Phone (714) 347-1010

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 is the NPI number for Gregory J Porter MD Inc?
The NPI for Gregory J Porter MD Inc is 1588849954, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gregory J Porter MD Inc?
NPPES lists Gregory Porter (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-11.