Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Leonard B Johnson, MD

Individual provider Infectious Disease Physician · NPI 1982697645

Leonard B Johnson, MD is registered under Infectious Disease in Grosse Pointe Woods, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 1993, 33 years ago. Practices with Henry Ford Health St John Hospital, a 330-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
33
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

19251 Mack Ave 333
Grosse Pointe Woods, MI 48236-2893 Not confirmed with CMS for 17 years — call before visiting
Phone: (313) 343-7280
Fax: (313) 343-7921
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 4301062126 (MI)

Record details

NPI number1982697645
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 29, 2005
Last updated in NPPESMay 11, 2009

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1993 (33 years in practice)
Group practice Henry Ford Health St. John Hospital — 330 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients206
Services billed 530 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Henry Ford Health St John Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 330 clinicians in the practice; 12 are shown here.

Other providers in Grosse Pointe Woods