Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mr. James Peter Koren, MD

Individual provider Surgery Physician · NPI 1952360430

Mr. James Peter Koren, MD practises General Surgery in Plymouth, New Hampshire. Graduated from Ohio State University College of Medicine in 1996, 30 years ago. Practices with Speare Memorial Hospital, a 49-clinician group and accepts Medicare assignment. Licensed in New Hampshire and Pennsylvania.

Years since qualifying
30
Trained at
Ohio State University College of Medicine
Licensed in
NH, PA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

16 Hospital Road Speare Surgical Services
Plymouth, NH 03264 Not confirmed with CMS for 11 years — call before visiting
Phone: (603) 536-5670
Fax: (603) 536-1544
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 13971 (NH)
Surgery Physician Taxonomy 208600000X · Licence MD419656 (PA)

Record details

NPI number1952360430
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2006
Last updated in NPPESOctober 20, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Speare Memorial Hospital — 49 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 25 times · 51st percentile
Hernia repair (minimally invasive) 1–10 times
Removal of skin lesions 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients102
Services billed 166 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Speare Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 49 clinicians in the practice; 12 are shown here.

Other providers in Plymouth