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

John M Decelles, MD

Individual provider Internal Medicine Physician · NPI 1841238490

John M Decelles, MD is an Internal Medicine Physician in Mishawaka, Indiana. Licensed in Indiana. Registered with an NPI since 2006.

Licensed in
IN
In the registry since
2006
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

611 E Douglas Rd Ste 309
Mishawaka, IN 46545-1467
Phone: (574) 472-6450
Fax: (574) 472-6474
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 01051161 (IN)

Record details

NPI number1841238490
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2006
Last updated in NPPESDecember 4, 2009
Mailing addressPo Box 6309, South Bend, IN 46660-6309

Other providers in Mishawaka