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

Joseph J Sliwkowski Jr., MD

Individual provider Family Medicine Physician · NPI 1861452294

Joseph J Sliwkowski Jr., MD is a Family Medicine Physician in Marlborough, Massachusetts. Licensed in Indiana and Massachusetts. Registered with an NPI since 2006.

Licensed in
IN, MA
In the registry since
2006
Specialties on file
3
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

5 Mount Royal Ave
Marlborough, MA 01752-1981
Phone: (508) 251-7262
Fax: (508) 251-7265
Show map & directions

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

Specialties & licences

Sports Medicine (Preventive Medicine) Physician (primary) Taxonomy 2083S0010X · Licence 74311 (MA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 01051636A (IN)
Occupational Medicine Physician Taxonomy 2083X0100X · Licence 01051636A (IN)

Record details

NPI number1861452294
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2006
Last updated in NPPESFebruary 28, 2011

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