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

John Donald Mahan, MD

Individual provider Pediatric Nephrology Physician · NPI 1023002417

John Donald Mahan, MD is a Nephrology in Columbus, Ohio. Qualified in 1977, 49 years ago. Practices with Pediatric Academic Association, Inc, a 250-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
49
Licensed in
OH
In the registry since
2005
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

555 S 18th St
Columbus, OH 43205-2654
Phone: (614) 722-4362
Fax: (614) 722-6482
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 5675 Venture Dr, Dublin, OH 43017-2159 — (614) 722-6200
  • 536 S Trimble Rd, Mansfield, OH 44906-3418 — (614) 722-2000
  • 740 Adair Ave, Zanesville, OH 43701-2838 — (614) 722-2000

Specialties & licences

Pediatric Nephrology Physician (primary) Taxonomy 2080P0210X · Licence 35050467 (OH)

Record details

NPI number1023002417
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2005
Last updated in NPPESFebruary 20, 2026
Certification dateFebruary 20, 2026

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 1977 (49 years in practice)
Group practice Pediatric Academic Association, Inc. — 250 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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