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

William C Logan Jr., MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1588603682

William C Logan Jr., MD is an Internal Medicine in Laconia, New Hampshire. Graduated from Duke University School of Medicine in 2005, 21 years ago. Practices with Concord Hospital-Laconia, a 276-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
21
Trained at
Duke University School of Medicine
Licensed in
SC
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

724 N Main St
Laconia, NH 03246-2742
Phone: (603) 524-9201
Show map & directions

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

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 23138 (SC)

Record details

NPI number1588603682
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2006
Last updated in NPPESJune 25, 2025
Certification dateJune 25, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolDUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Concord Hospital-Laconia — 276 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount