Individual Healthcare Provider
Clayton Patrick Smith, MD
Provider's NPPES record last updated: July 22, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1184184160
- Primary Specialty
- Radiology — Radiation Oncology
- Practice Location
- Portsmouth, New Hampshire
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 21, 2026, 11:21 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Radiology
Radiation Oncology
Allopathic & Osteopathic Physicians
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
Taxonomy code 2085R0001X General Practice
Allopathic & Osteopathic Physicians
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Taxonomy code 208D00000XStudent in an Organized Health Care Education/Training Program
Student, Health Care
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Taxonomy code 390200000X
Provider-Reported License Information
- Radiology (New Hampshire)
- 25062
- Radiology (Massachusetts)
- 1017867
- General Practice (California)
- A180474
Practice Locations
Practice Location
121 Corporate Dr
Portsmouth, New Hampshire 03801-6895
Phone: (603) 230-6100
Additional Practice Location
1000 W Carson St
Torrance, California 90502-2004
Phone: (303) 513-8943
Additional Practice Location
41 Mall Rd Burlington
Burlington, Massachusetts 01805-2004
Phone: (781) 744-8780
Additional Practice Location
200 Medical Plaza Suite B265
Los Angeles, California 90095-2004
Phone: (310) 825-9775
Record Information
- Enumeration Date
- March 25, 2019
- Provider's NPPES Record Last Updated
- July 22, 2025
- Certification Date
- July 22, 2025
- NPISignal NPPES Dataset
- August 2026
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