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

Ivan David Ongom, MD

Individual provider Internal Medicine Physician · NPI 1659502433

Ivan David Ongom, MD is an Internal Medicine in Dayton, Ohio. Qualified in 2006, 20 years ago. Practices with Hisey Physician Services, LLC, a 57-clinician group and accepts Medicare assignment. Licensed in Kentucky and Ohio.

Years since qualifying
20
Licensed in
KY, OH
In the registry since
2009
Specialties on file
3
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

30 E Apple St Ste 3300
Dayton, OH 45409-2939
Phone: (937) 208-8394
Fax: (937) 208-8388
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 35-098603 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35-098603 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 48246 (KY)

Record details

NPI number1659502433
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 28, 2009
Last updated in NPPESApril 26, 2018
Mailing address30 E Apple St, Ste 3300, Dayton, OH 45409-2939

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Hisey Physician Services, Llc — 57 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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