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

Dr. Michael L Willoughby, MD

Individual provider Internal Medicine Physician · NPI 1295789733

Dr. Michael L Willoughby, MD is registered under Hospice/Palliative Care in Charleston, South Carolina. Graduated from University of Connecticut School of Medicine in 1976, 50 years ago. Practices with Roper Saint Francis Physicians Network, a 532-clinician group and accepts Medicare assignment. Licensed in Georgia and South Carolina.

Years since qualifying
50
Trained at
University of Connecticut School of Medicine
Licensed in
GA, SC
In the registry since
2006
Specialties on file
2
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

316 Calhoun St
Charleston, SC 29401-1113
Phone: (843) 606-7810
Fax: (843) 606-8088
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence 39016 (SC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 021612 (GA)

Record details

NPI number1295789733
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 20, 2006
Last updated in NPPESJanuary 31, 2019

Medicare enrollment

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

Medicare specialtyHOSPICE/PALLIATIVE CARE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 1976 (50 years in practice)
Group practice Roper Saint Francis Physicians Network — 532 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients137
Services billed 182 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

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 Roper Saint Francis Physicians Network

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 532 clinicians in the practice; 12 are shown here.

Other providers in Charleston