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

Dr. Peter J Dirksmeier, MD

Individual provider Orthopaedic Surgery Physician · NPI 1831124361

Dr. Peter J Dirksmeier, MD practises Orthopedic Surgery in Somersworth, New Hampshire. Graduated from University of Southern California Keck School of Medicine in 2000, 26 years ago. Practices with Wentworth Douglass Physician Corporation, a 431-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Hampshire.

Years since qualifying
26
Trained at
University of Southern California Keck School of Medicine
Licensed in
NH
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.

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Practice location Address checks out

7 Marsh Brook Dr Ste 100
Somersworth, NH 03878
Phone: (603) 742-2007
Fax: (603) 749-4605
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery of the Spine Physician (primary) Taxonomy 207XS0117X · Licence 11150 (NH)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 11150 (NH)

Record details

NPI number1831124361
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 12, 2006
Last updated in NPPESSeptember 6, 2018

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice Wentworth Douglass Physician Corporation — 431 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Laminectomy or laminotomy (partial removal of spine bones) 64 times · 84th percentile
Hip replacement 23 times · 70th percentile
Spinal fusion 75 times · 66th percentile
Knee replacement 1–10 times
Removal of tissue 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 patients375
Services billed 1,016 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Wentworth Douglass Physician Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 431 clinicians in the practice; 12 are shown here.

Other providers in Somersworth