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

Dr. John C Vassallo, MD

Individual provider Internal Medicine Physician · NPI 1275590119

Dr. John C Vassallo, MD is an Internal Medicine in Howell, Michigan. Qualified in 2001, 25 years ago. Practices with Medical Office of John Vassallo MD PLLC, a 5-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
25
Licensed in
MI
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

1225 W Grand River Ave Ste 300
Howell, MI 48843-3970
Phone: (517) 548-0010
Fax: (517) 548-5326
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 JV078585 (MI)

Record details

NPI number1275590119
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 26, 2006
Last updated in NPPESMay 11, 2023
Certification dateMay 11, 2023
Mailing address1225 W Grand River Ave Ste 300, Howell, MI 48843-3970

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Medical Office Of John Vassallo Md Pllc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Howell