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Dr. Donald Lynn Hamby, M.D.

Addiction Medicine (Preventive Medicine) Physician in Chattanooga, TN · enumerated 2005 · practices at Restoration Recovery, Pllc.

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

National Provider Identifier

1770589137

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Registry record

Entity type Individual (Type 1)
Name Dr. Donald Lynn Hamby
Credential M.D.
Sex Male
Practice address 6141 Shallowford Rd Ste 100, Chattanooga, TN, 37421
Phone (423) 498-2000
Fax (423) 498-2001
Enumeration date Jun 21, 2005
Last updated in NPPES Jul 13, 2021

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD0000012155 (TN) Secondary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 12155 (TN) Secondary
2083A0300X Addiction Medicine (Preventive Medicine) Physician Allopathic & Osteopathic Physicians · License MD0000012155 (TN) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

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.
What specialty is Donald Hamby?
Donald Hamby is registered in NPPES with the primary taxonomy of Addiction Medicine (Preventive Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-13.