Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Obi Alexander Ob-Nwankwo, MD

Individual provider Internal Medicine Physician · NPI 1184917221

Dr. Obi Alexander Ob-Nwankwo, MD is a Hospitalist in Saginaw, Michigan. Qualified in 2005, 21 years ago. Practices with Regional Health Services Inc, a 576-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
21
Licensed in
MI
In the registry since
2011
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

1447 N Harrison St
Saginaw, MI 48602-4727
Phone: (989) 583-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301508795 (MI)

Record details

NPI number1184917221
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2011
Last updated in NPPESOctober 17, 2025
Certification dateOctober 17, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Regional Health Services Inc — 576 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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