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

Dr. Raymond Martin Klein, MD

Individual provider Hospitalist Physician · NPI 1821484296

Dr. Raymond Martin Klein, MD is an Internal Medicine in Portland, Maine. Graduated from University of Wisconsin School of Medicine in 2015, 11 years ago. Practices with Mainehealth, a 2,615-clinician group and accepts Medicare assignment. Licensed in Maine and New Hampshire.

Years since qualifying
11
Trained at
University of Wisconsin School of Medicine
Licensed in
ME, NH
In the registry since
2015
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

22 Bramhall St
Portland, ME 04102-3134
Phone: (207) 662-4618
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD22828 (ME)
Hospitalist Physician Taxonomy 208M00000X · Licence 18801 (NH)

Record details

NPI number1821484296
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 12, 2015
Last updated in NPPESJune 17, 2019

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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