Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Christopher J. Ladner, MD, PHD

Individual provider Diagnostic Radiology Physician · NPI 1134203722

Dr. Christopher J. Ladner, MD, PHD is a Diagnostic Radiology in Greenfield, Massachusetts. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1999, 27 years ago. Practices with Radiology and Imaging Inc, a 59-clinician group and accepts Medicare assignment. Licensed in Massachusetts, New York, Rhode Island and Vermont.

Years since qualifying
27
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
MA, NY, RI, VT
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

164 High St
Greenfield, MA 01301-2613
Phone: (413) 773-2063
Fax: (612) 294-4903
Show map & directions

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

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 247286 (MA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 0420011172 (VT)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 236567 (NY)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence MD13226 (RI)

Record details

NPI number1134203722
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedOctober 24, 2006
Last updated in NPPESFebruary 18, 2014

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Radiology And Imaging Inc — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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