DR. CLAYTON PATRICK SMITH MD
NPI 1184184160
Radiology - Radiation Oncology in Portsmouth, NH

Active since March 25, 2019PECOS EnrolledAccepts Medicare Assignment
121 CORPORATE DR, PORTSMOUTH, NH 03801(603) 230-6100 Get Directions Write a Review

NPPES record last updated: July 22, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 9, 2024, Jan 13, 2023 (2 updates tracked since 2023).

About Dr. Clayton Patrick Smith Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CLAYTON PATRICK SMITH MD (NPI 1184184160) is an individual radiation oncology provider in Portsmouth, New Hampshire, licensed in New Hampshire (25062) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Concord Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1184184160
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameDR. CLAYTON PATRICK SMITHCredential: MD
Location Address121 CORPORATE DRPortsmouth, NH 03801-6895
Mailing Address217 S Barrington Ave Apt 103Los Angeles, CA 90049-3331 · (303) 513-8943
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 2019
Enumeration DateMarch 25, 2019
Last NPPES UpdateJuly 22, 20252 updates tracked since enumeration
NPPES CertifiedJuly 22, 2025
NPI 1184184160 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
Licenses Licensed in NH · 25062 Licensed in MA · 1017867
Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

Also ListedGeneral PracticeTaxonomy 208D00000X · License A180474 (CA)
121 CORPORATE DR, Portsmouth, NH 03801

Secondary Practice Locations 3

Location 11000 W Carson StTorrance, CA 90502-2004 · Phone (303) 513-8943
Location 241 Mall Rd BurlingtonBurlington, MA 01805-2004 · Phone (781) 744-8780
Location 3200 Medical Plaza Suite B265Los Angeles, CA 90095-2004 · Phone (310) 825-9775

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Clayton Patrick Smith Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092132597
PECOS Enrollment IDI20240723000276, I20240806000925
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 13

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ct guidance for insertion of radiation therapy fields 77014
CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.
547 services138 patients
Calculation of radiation therapy dose 77300
Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.
131 services32 patients
Radiation treatment management, 5 treatment sessions 77427
Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.
130 services81 patients
Design and construction of complex radiation treatment device 77334
The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.
95 services27 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
47 services47 patients
Complex radiation therapy planning 77263
Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.
42 services38 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Concord Hospital

Acute Care Hospitals · Concord, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300001
Location250 Pleasant StConcord, NH 03301 · Merrimack County
Birthing friendly

Mary Hitchcock Memorial Hospital

Acute Care Hospitals · Lebanon, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300003
Location1 Medical Center DriveLebanon, NH 03756 · Grafton County
Emergency services Birthing friendly

Concord Hospital- Laconia

Acute Care Hospitals · Laconia, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300005
Location80 Highland StLaconia, NH 03246 · Belknap County
Emergency services

Elliot Hospital

Acute Care Hospitals · Manchester, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300012
Location1 Elliot WayManchester, NH 03103 · Hillsborough County
Emergency services Birthing friendly

Wentworth-Douglass Hospital

Acute Care Hospitals · Dover, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300018
Location789 Central AveDover, NH 03820 · Strafford County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$174.26 typical visit price
range $57.75 – $174.26
Typical copayment $43.56 (range $14.43 – $43.56)
Most-billed visit code 99205
Established Patient
$71.85 typical visit price
range $18.70 – $142.15
Typical copayment $17.96 (range $4.67 – $35.53)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Clayton Smith's NPI number?

The NPI number for Clayton Smith is 1184184160. It was assigned to this individual provider in the NPPES registry on March 25, 2019.

Where is Clayton Smith located?

Clayton Smith practices at 121 Corporate Dr, Portsmouth, NH 03801. The listed phone number is (603) 230-6100.

What is Clayton Smith's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Clayton Smith enrolled in Medicare?

Yes. Clayton Smith is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Clayton Smith accept?

Health plans from Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Clayton Smith as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Clayton Smith affiliated with any hospitals?

According to CMS data, Clayton Smith is affiliated with Concord Hospital, Mary Hitchcock Memorial Hospital, Concord Hospital- Laconia, Elliot Hospital and Wentworth-Douglass Hospital.

When was this NPI record last updated?

The NPPES record for Clayton Smith was last updated on July 22, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.