Dr. Clayton Patrick Smith, MD
Dr. Clayton Patrick Smith, MD is a Radiation Oncology in Portsmouth, New Hampshire. Graduated from Georgetown University School of Medicine in 2019, 7 years ago. Practices with Radiation Oncology Associates, PA, a 23-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California, Massachusetts and New Hampshire.
- Years since qualifying
- 7
- Trained at
- Georgetown University School of Medicine
- Licensed in
- CA, MA, NH
- In the registry since
- 2019
- Specialties on file
- 4
What do these letters mean?
- MD — Doctor of Medicine
- A physician who completed allopathic medical school.
Practice location Address checks out
121 Corporate DrPortsmouth, NH 03801-6895
Phone: (603) 230-6100
Show map & directions
Directions in Google Maps · Apple Maps · OpenStreetMap
Pin is approximate — placed at the ZIP-code centre, not the exact door.
Additional practice locations (3)
- 200 Medical Plaza Suite B265, Los Angeles, CA 90095-2004 — (310) 825-9775
- 1000 W Carson St, Torrance, CA 90502-2004 — (303) 513-8943
- 41 Mall Rd Burlington, Burlington, MA 01805-2004 — (781) 744-8780
Specialties & licences
| Radiation Oncology Physician (primary) | Taxonomy 2085R0001X · Licence 25062 (NH) |
|---|---|
| Radiation Oncology Physician | Taxonomy 2085R0001X · Licence 1017867 (MA) |
| General Practice Physician | Taxonomy 208D00000X · Licence A180474 (CA) |
| Student in an Organized Health Care Education/Training Program | Taxonomy 390200000X (CA) |
Record details
| NPI number | 1184184160 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | MD |
| Sole proprietor | No |
| NPI enumerated | March 25, 2019 |
| Last updated in NPPES | July 22, 2025 |
| Certification date | July 22, 2025 |
Medicare enrollment
| Medicare specialty | RADIATION ONCOLOGY |
|---|---|
| Medical school | GEORGETOWN UNIVERSITY SCHOOL OF MEDICINE |
| Graduated | 2019 (7 years in practice) |
| Group practice | Radiation Oncology Associates, Pa — 23 clinicians |
| Accepts Medicare assignment | Yes — accepts the Medicare-approved amount |
| Practice locations | 2 on file with Medicare |