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

Dr. John S Sullivan, MD

Individual provider Allergy Physician · NPI 1568466324

Dr. John S Sullivan, MD is an Allergy Physician in Worcester, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2005.

Licensed in
MA
In the registry since
2005
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

100 Mlk Jr Blvd 2nd Fl
Worcester, MA 01608-1209
Phone: (508) 757-1589
Fax: (508) 756-5633
Show map & directions

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

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence 57446 (MA)

Record details

NPI number1568466324
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 9, 2005
Last updated in NPPESSeptember 3, 2008
Mailing address100 Mlk Jr Blvd, 2nd Floor, Worcester, MA 01608-1209

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