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

Charles A Longo, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1841266608

Charles A Longo, MD is an Endocrinology in Sioux Falls, South Dakota. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1998, 28 years ago. Practices with Avera McKennan, a 962-clinician group, accepts Medicare assignment and offers telehealth. Licensed in South Dakota.

Years since qualifying
28
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
SD
In the registry since
2006
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

1315 S Cliff Ave Ste 3000
Sioux Falls, SD 57105-1061
Phone: (605) 322-7600
Fax: (605) 322-7601
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 5192 (SD)

Record details

NPI number1841266608
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 23, 2006
Last updated in NPPESDecember 13, 2013

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Avera McKennan — 962 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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