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

Dr. Harry Calvin Stein, MD

Individual provider Addiction Medicine (Internal Medicine) Physician · NPI 1033323795

Dr. Harry Calvin Stein, MD is an Addiction Medicine (Internal Medicine) Physician in Rockville, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2007
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

11140 Rockville Pike Ste 400
Rockville, MD 20852-3104
Phone: (561) 302-5014
Show map & directions

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

Specialties & licences

Addiction Medicine (Internal Medicine) Physician (primary) Taxonomy 207RA0401X · Licence D0001138 (MD)

Record details

NPI number1033323795
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 10, 2007
Last updated in NPPESJuly 21, 2022