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

William J Zaks, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1437249307

William J Zaks, MD is an Internal Medicine in Grand Forks, North Dakota. Graduated from University of Virginia School of Medicine in 1987, 39 years ago. Practices with Altru Health System, a 667-clinician group and accepts Medicare assignment. Licensed in North Dakota.

Years since qualifying
39
Trained at
University of Virginia School of Medicine
Licensed in
ND
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

1380 S Columbia Rd
Grand Forks, ND 58201-4059
Phone: (701) 795-2000
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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 7435 (ND)

Record details

NPI number1437249307
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESOctober 1, 2020
Certification dateOctober 1, 2020
Mailing address2401 Demers Ave, Grand Forks, ND 58201

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesENDOCRINOLOGY
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Altru Health System — 667 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Grand Forks