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

Dr. Jonathan M Fallon, DO, MS

Individual provider Orthopaedic Surgery Physician · NPI 1396955738

Dr. Jonathan M Fallon, DO, MS practises Orthopedic Surgery in West Hatfield, Massachusetts. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2003, 23 years ago. Practices with Mass General Brigham Medical Group Western Massachusetts Inc, a 293-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
23
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
MA
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

4 W St
West Hatfield, MA 01088-9515 Not confirmed with CMS for 15 years — call before visiting
Phone: (413) 586-8200
Fax: (413) 582-1460
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 235996 (MA)

Record details

NPI number1396955738
Entity typeIndividual (Type 1)
GenderMale
Credentials DO , MS
Sole proprietorNo
NPI enumeratedMay 23, 2007
Last updated in NPPESFebruary 9, 2011

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Also practisesSPORTS MEDICINE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 2003 (23 years in practice)
Group practice Mass General Brigham Medical Group Western Massachusetts Inc — 293 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Upper limb (arm) arthroscopy (minimally invasive joint repair) 31 times · 75th percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 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 patients294
Services billed 1,337 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. Those with a page here are linked.

  • Vna & Hospice Of Cooley Dickinson Home health agency · Northampton, MA · listed as Vna & Hospice of Cooley Dickinson Inc
  • Cooley Dickinson Hospital Inc,The Hospital · Northampton, MA

Colleagues at Mass General Brigham Medical Group Western Massachusetts Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 293 clinicians in the practice; 12 are shown here.

Other providers in West Hatfield