DR. JAMES KENNETH SEFFINGA CLARK M.D.
NPI 1740336080
Radiology - Diagnostic Radiology in Lebanon, NH

Q: What is James Clark's NPI number?

The NPI number for James Clark is 1740336080. It was assigned to this individual provider in the NPPES registry on January 27, 2007. The provider is also known as Dr. James Kenneth Seffinga-Clark M.D..

Q: What is James Clark's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for James Clark was last updated on March 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 27, 2007PECOS EnrolledAccepts Medicare Assignment

1 MEDICAL CENTER DR, LEBANON, NH 03756(603) 650-5000 Get Directions Write a Review

NPPES record last updated: March 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 4, 2025, Feb 11, 2020, Feb 7, 2020 (3 updates tracked since 2020).

On this page

About Dr. James Kenneth Seffinga Clark M.d. NPPES

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

DR. JAMES KENNETH SEFFINGA CLARK M.D. (NPI 1740336080) is an individual diagnostic radiology provider in Lebanon, New Hampshire, licensed in Nebraska (24426) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and maintains a secondary practice location in Portsmouth.

NPPES Registry Identity

NPI1740336080

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. JAMES KENNETH SEFFINGA CLARKCredential: M.D.

Location Address1 MEDICAL CENTER DRLebanon, NH 03756-0001

Mailing AddressNaval Medical Center Portsmouth, 620 John Paul Jones CirclePortsmouth, VA 23708-1904 · (619) 709-5003

Phone(603) 650-5000

Sole ProprietorNo

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2006

Enumeration DateJanuary 27, 2007

Last NPPES UpdateMarch 4, 20253 updates tracked since enumeration

NPPES CertifiedMarch 4, 2025

✔ NPI 1740336080 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in NE · 24426✔ Licensed in NH · 34260

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

1 MEDICAL CENTER DR, Lebanon, NH 03756

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Other Names 1

Former Name (1)Dr. James Kenneth Seffinga-clark M.d.

Secondary Practice Location 1

Location 1Naval Medical Center Portsmouth, 620 John Paul Jones CirclePortsmouth, VA 23708-1904 · Phone (619) 709-5003

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. James Kenneth Seffinga Clark M.d. 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 ID9638470909

PECOS Enrollment IDI20250310001856

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.

Medicare Billing Reassignments

Medicare enrollment records show James Clark reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mary Hitchcock Memorial Hospital

Same address

General Acute Care Hospital

1 MEDICAL CENTER DR
Lebanon, NH 03756

Reassigned Medicare billing, New Hampshire enrollment
2,620 clinicians in this Medicare group

NPI 1629788237 (603) 650-5000

Dartmouth-Hitchcock Clinic

29 mi

Internal Medicine

ONE MEDICAL CENTER DR
Lebanon, NH 03756

Reassigned Medicare billing, New Hampshire enrollment
2,999 clinicians in this Medicare group

NPI 1548210198 (603) 650-5000

Chesapeake Radiologists Ltd

550 mi

Diagnostic Radiology

736 BATTLEFIELD BLVD N
Chesapeake, VA 23320

Reassigned Medicare billing, Virginia enrollment
60 clinicians in this Medicare group

NPI 1801815063 (757) 312-6124

Chesapeake Diagnostic Imaging Centers, LLC

550 mi

Diagnostic Radiology

676 KINGSBOROUGH SQ STE A
Chesapeake, VA 23320

Reassigned Medicare billing, Virginia enrollment
42 clinicians in this Medicare group

NPI 1922056241 (757) 671-1144

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

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.

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

65 services63 patients

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

42 services40 patients

X-ray of chest, 2 views 71046

21 services21 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

15 services15 patients

Imaging for evaluation of swallowing function 74230

This process, known as a swallowing study, uses imaging technology to view how food and liquid move from your mouth to your stomach. It helps identify any issues you may have swallowing, which can be crucial for determining the best treatment plan.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

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

New London Hospital

Critical Access Hospitals · New London, NH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number301304

Location273 County RoadNew London, NH 03257 · Merrimack County

Emergency services

Alice Peck Day Memorial Hospital

Critical Access Hospitals · Lebanon, NH

OwnershipVoluntary non-profit - Private

CMS Certification Number301305

Location10 Alice Peck Day DriveLebanon, NH 03766 · Grafton County

Emergency services

Huggins Hospital

Critical Access Hospitals · Wolfeboro, NH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number301312

Location240 South Main StreetWolfeboro, NH 03894 · Carroll County

Emergency services

Copley Hospital

Critical Access Hospitals · Morrisville, VT

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number471305

Location528 Washington HighwayMorrisville, VT 05661 · Lamoille County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03756 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

$89.14 typical visit price

range $57.75 – $174.26

Typical copayment $22.28 (range $14.43 – $43.56)

Most-billed visit code 99203

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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. JANICE M BRENNAN APRN

Nurse Practitioner (Family)

1 MEDICAL CENTER DR, DHMC DEPARTMENT OF OCCUPATION MEDICINE
LEBANON, NH 03756

Grafton County (603) 560-5000

MS. SHELLEY GRACE BENSON R.PH.

Pharmacist (Oncology)

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5417

ELIAS LOUKAS M.D.

Internal Medicine

1 MEDICAL CENTER DR, DHMC SECTION OF HOSPITAL MEDICINE
LEBANON, NH 03756

Grafton County (603) 650-8380

SARAH S SEO MD

Otolaryngology

1 MEDICAL CENTER DR, OTOLARYNGOLOGY
LEBANON, NH 03756

Grafton County (603) 650-8123

DR. SRINIVAS J. IVATURY MD

Colon & Rectal Surgery

1 MEDICAL CENTER DR, COLON & RECTAL SURGERY DEPARTMENT
LEBANON, NH 03756

Grafton County (603) 650-8113

TIMOTHY EARLEY D.O.

Student in an Organized Health Care Education/Training Program

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (201) 694-0663

HANNAH ELIZABETH FOOTE BENSIMHON M.D.

Internal Medicine (Cardiovascular Disease)

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5000

EMILE JOSEPH HASAN M.D.

Student in an Organized Health Care Education/Training Program

1 MEDICAL CENTER DR
LEBANON, NH 03756

Grafton County (603) 650-5000

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 James Clark's NPI number?

The NPI number for James Clark is 1740336080. It was assigned to this individual provider in the NPPES registry on January 27, 2007. The provider is also known as Dr. James Kenneth Seffinga-Clark M.D..

Where is James Clark located?

James Clark practices at 1 Medical Center Dr, Lebanon, NH 03756. The listed phone number is (603) 650-5000.

What is James Clark's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is James Clark enrolled in Medicare?

Yes. James Clark 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.

Which organizations bill Medicare for James Clark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Clark reassigns Medicare benefits to 4 organizations: Mary Hitchcock Memorial Hospital (Lebanon, NH), Dartmouth-Hitchcock Clinic (Lebanon, NH), Chesapeake Radiologists Ltd (Chesapeake, VA) and Chesapeake Diagnostic Imaging Centers, LLC (Chesapeake, VA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Clark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Clark accept?

Health plans from Ambetter from NH Healthy Families and Taro Health list James Clark 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 James Clark affiliated with any hospitals?

According to CMS data, James Clark is affiliated with Mary Hitchcock Memorial Hospital, New London Hospital, Alice Peck Day Memorial Hospital, Huggins Hospital and Copley Hospital.

When was this NPI record last updated?

The NPPES record for James Clark was last updated on March 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.