Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Allen L Flickinger, MD

Nephrology Physician in Toledo, OH · enumerated 2006 · practices at Donald B Campbell MD Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1538137229

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Registry record

Entity type Individual (Type 1)

Name Dr. Allen L Flickinger

Credential MD

Sex Male

Practice address 2109 Hughes, Ste 920, Toledo, OH, 43606

Phone (419) 479-2650

Fax (419) 479-2655

Enumeration date Mar 9, 2006

Last updated in NPPES Mar 25, 2020

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 5855 (OH) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
01999	Other	-	PARAMOUNT
000000137373	Other	-	ANTHEM BC BS
0143820	Medicaid	OH	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1538137229 active?

Yes, as of the latest NPPES snapshot, NPI 1538137229 is active (record last updated 2020-03-25).

How do I verify Allen Flickinger's NPI record?

Cross-check NPI 1538137229 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Donald B Campbell MD Inc Surgery Physician · Toledo, OH NPI 1508838913

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-25.