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JOHN DONALD MAHAN MD
NPI 1023002417
Pediatrics - Pediatric Nephrology in Columbus, OH

Active since August 31, 2005PECOS EnrolledAccepts Medicare Assignment
555 S 18TH ST, COLUMBUS, OH 43205(614) 722-4362(614) 722-6482 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 17, 2026, Feb 21, 2022 (2 updates tracked since 2022).

About John Donald Mahan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN DONALD MAHAN MD (NPI 1023002417) is an individual pediatric nephrology provider in Columbus, Ohio, licensed in Ohio (35050467) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Nationwide Children's Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1023002417
Entity TypeIndividualMale
Primary Taxonomy2080P0210X
Provider Legal NameJOHN DONALD MAHANCredential: MD
Location Address555 S 18TH STColumbus, OH 43205-2654
Mailing Address700 Childrens DrColumbus, OH 43205-2664 · (614) 722-2000
Phone(614) 722-4362
Fax(614) 722-6482
Sole ProprietorNo
Medical School CMSOtherGraduated 1977
Enumeration DateAugust 31, 2005
Last NPPES UpdateAugust 17, 20262 updates tracked since enumeration
NPPES CertifiedAugust 17, 2026
✔ NPI 1023002417 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0210X
License✔ Licensed in OH · 35050467
Definition
A pediatrician who deals with the normal and abnormal development and maturation of the kidney and urinary tract, the mechanisms by which the kidney can be damaged, the evaluation and treatment of renal diseases, fluid and electrolyte abnormalities, hypertension and renal replacement therapy.
555 S 18TH ST, Columbus, OH 43205
Open in Google Maps ↗

Secondary Practice Locations 3

Location 15675 Venture DrDublin, OH 43017-2159 · Phone (614) 722-6200
Location 2536 S Trimble RdMansfield, OH 44906-3418 · Phone (614) 722-2000
Location 3740 Adair AveZanesville, OH 43701-2838 · Phone (614) 722-2000

Other Identifiers 2

Medicaid0562529OH
Other0549992OH · Cgs - Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., CareSource and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Donald Mahan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4486787181
PECOS Enrollment IDI20100802000623
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show John Mahan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Nationwide Children's Hospital
0.1 mi
Multi-Specialty
700 CHILDRENS DR
Columbus, OH 43205
  • Reassigned Medicare billing, Ohio enrollment
  • 976 clinicians in this Medicare group
NPI 1851179873 (614) 722-2055
Pediatric Academic Association, Inc.
0.1 mi
Pediatrics
700 CHILDRENS DR
Columbus, OH 43205
  • Reassigned Medicare billing, Ohio enrollment
  • 1,246 clinicians in this Medicare group
NPI 1063419943 (614) 722-4579

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Nationwide Children's Hospital

Childrens · Columbus, OH
OwnershipVoluntary non-profit - Private
CMS Certification Number363305
Location700 Children's DriveColumbus, OH 43205 · Franklin County
Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LORIE D HAMIWKA MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-4634
DR. ERIC STEVE MULL D.O
Pediatrics (Pediatric Pulmonology)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-2000
ROBERT DAVID MURRAY MD
Pediatrics (Pediatric Gastroenterology)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-4089
BENEDICTA G ENRILE MD
Pediatrics (Neurodevelopmental Disabilities)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-2438
WILLIAM MATTHEW SMILEY DO
Pediatrics
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-4950
SARAH K. DRIESBACH FNP
Nurse Practitioner (Family)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-2000
KENDRA ELAINE BRUNNER APRN, CPNP-PC
Nurse Practitioner (Pediatrics)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-2000
SAMANTHA DACHENHAUS
Nurse Practitioner (Pediatrics)
555 S 18TH ST
COLUMBUS, OH 43205
Franklin County (614) 722-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Mahan's NPI number?

The NPI number for John Mahan is 1023002417. It was assigned to this individual provider in the NPPES registry on August 31, 2005.

Where is John Mahan located?

John Mahan practices at 555 S 18th St, Columbus, OH 43205. The listed phone number is (614) 722-4362.

What is John Mahan's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Is John Mahan enrolled in Medicare?

Yes. John Mahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for John Mahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Mahan reassigns Medicare benefits to 2 organizations: Nationwide Children's Hospital (Columbus, OH) and Pediatric Academic Association, Inc. (Columbus, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Mahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Mahan accept?

Health plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., CareSource, Molina Healthcare and UnitedHealthcare list John Mahan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Mahan affiliated with any hospitals?

According to CMS data, John Mahan is affiliated with Nationwide Children's Hospital.

When was this NPI record last updated?

The NPPES record for John Mahan was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.