Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Ernest Rackley Ivey, M.D.

Addiction Medicine (Psychiatry & Neurology) Physician in Chattanooga, TN · enumerated 2005.

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

National Provider Identifier

1568459212

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Registry record

Entity type Individual (Type 1)

Name Dr. Ernest Rackley Ivey

Credential M.D.

Sex Male

Practice address Chattanooga, TN, 37415

Phone (608) 354-3947

Enumeration date Sep 27, 2005

Last updated in NPPES Dec 21, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2084F0202X Forensic Psychiatry Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) Secondary

2084P0005X Neurodevelopmental Disabilities Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) Secondary

2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) Secondary

2084P0805X Geriatric Psychiatry Physician Allopathic & Osteopathic Physicians · License 0101232074 (VA) Secondary

209800000X Legal Medicine (M.D./D.O.) Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) Secondary

2084A0401X Addiction Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 44317-020 (WI) 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
19248	Other	SC	MEDICAL LICENSE
67772	Other	GA	MEDICAL LICENSE
036-103584	Other	IL	MEDICAL LICENSE
44317-20	Other	WI	MEDICAL LICENSE
0101232074	Other	VA	MEDICAL LICENSE
11027179	Other	-	CAQH
3428920	Medicaid	WI	-

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.

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Frequently asked questions

What specialty is Ernest Ivey?

Ernest Ivey is registered in NPPES with the primary taxonomy of Addiction Medicine (Psychiatry & Neurology) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-21.