NPI Lens

Gregory Gerald Smith, MD

NPI 1952322596ActiveIndividual· Internal Medicine· Sacramento, CA

Internal Medicine (MD) in Sacramento, California, trained at State University of New York at Buffalo School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $1,816,329 for 25,259 claims, against $146,045 paid for services in 2024. Neurocrine Biosciences, Inc. was the largest of 17 companies reporting payments in 2025, $3,183 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.

Overview

NPI1952322596
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedJul 21, 2006
Last updated in NPPESSep 8, 2026
Certified by providerSep 8, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000XG42751CA

About license numbers in NPPES

Exclusion screening

Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.

Matched byName on OIG listExclusion typeExcluded sinceLocation
Name + stateGregory Carleton Smith · Therapist1128b4Feb 20, 2020San Geronimo, CA
ListResultDetails
HHS-OIG LEIE · Nov 10, 2026Possible (name)See above
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (CA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients807
Services billed2,426 across 32 procedure codes
Paid by Medicare$146,045

Part D prescriptions in 2024

Prescriptions (claims)25,259 · 30,660 30-day fills
Patients1,509
Total drug cost$1,816,329
Generic share83% of claims

Medicare sources and data years

Education and affiliations

Medical schoolState University of New York at Buffalo School of Medicine
Graduation year1979
Medicare specialtyInternal Medicine
TelehealthOffers telehealth

Medical group

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$3,183 · 40 payments from 17 companies
  • 2024$2,726 · 43 payments from 17 companies

Top paying companies in 2025

CompanyAmountPayments
Neurocrine Biosciences, Inc.$736.228
Bayer Healthcare Pharmaceuticals Inc.$303.437
Exact Sciences Corporation$263.783
E.R. Squibb & Sons, L.L.C.$243.432
Astrazeneca Pharmaceuticals LP$242.832

What the 2025 payments were for

  • Food and Beverage$3,183 · 40 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other Internal Medicine providers in Sacramento

All Internal Medicine providers in California →