Gregory J. Porter, M.D.

NPI 1790741262ActiveIndividual· Anesthesiology· Grass Valley, CA

Anesthesiology (M.D.) in Grass Valley, California, trained at State University of New York at Stony Brook, School of Medicine (class of 1990). 1,282 Medicare patients in 2024, $335,634 paid; nearly all of their 618 Part D prescriptions were generic (94%). Abbott Laboratories was the largest of 5 companies reporting payments in 2025, $692.28 in all, mostly food and beverage.

Overview

NPI	1790741262
Status	Active
Entity type	Individual
Credential	M.D.
Sole proprietor	No
NPI issued	Apr 25, 2006
Last updated in NPPES	Jun 18, 2024
Certified by provider	Jun 18, 2024

Specialties and licenses

Taxonomy	Code	License	State
Anesthesiology Primary	207L00000X	G72310	CA
Anesthesiology, Pain Medicine	207LP2900X	G72310	CA
Pain Medicine, Interventional Pain Medicine	208VP0014X	G72310	CA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Oct 9, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026	No match	—
New York OMIG · Nov 10, 2026	No match	—
Ohio Medicaid · Nov 10, 2026	No match	—
Pennsylvania Medicheck · Nov 10, 2026	No match	—
Washington HCA · Nov 10, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - Anesthesiology (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	1,282
Services billed	4,166 across 40 procedure codes
Paid by Medicare	$335,634

Part D prescriptions in 2024

Prescriptions (claims)	618 · 641 30-day fills
Patients	130
Total drug cost	$43,837
Generic share	94% of claims

Medicare sources and data years

Education and affiliations

Medical school	State University of New York at Stony Brook, School of Medicine
Graduation year	1990
Medicare specialty	Anesthesiology
Secondary specialties	Interventional Pain Management
Telehealth	Offers telehealth