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

Diane L Dietzen, MD

Individual provider Internal Medicine Physician · NPI 1578569828

Diane L Dietzen, MD is an Internal Medicine Physician in Springfield, Massachusetts. Licensed in Massachusetts and Pennsylvania. Registered with an NPI since 2005.

Licensed in
MA, PA
In the registry since
2005
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 →

Practice location Address checks out

759 Chestnut St
Springfield, MA 01199-1619
Phone: (413) 794-8121
Fax: (413) 794-4054
Show map & directions

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

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence 249857 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD044558E (PA)

Record details

NPI number1578569828
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2005
Last updated in NPPESJuly 16, 2013

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