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Dr. Grant Carlton Lewis, M.D.

Hematology & Oncology Physician in Savannah, GA · enumerated 2006.

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

National Provider Identifier

1215009287

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Registry record

Entity type Individual (Type 1)
Name Dr. Grant Carlton Lewis
Credential M.D.
Sex Male
Practice address 225 Candler Dr, Suite 300, Savannah, GA, 31405
Phone (912) 354-6187
Fax (912) 355-0596
Enumeration date Nov 15, 2006
Last updated in NPPES Jul 30, 2018

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 31546 (SC) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 057719 (GA) 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
513511389C Medicaid GA -
513511389D Medicaid GA -
513511389B Medicaid GA -
315466 Medicaid SC -

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 Grant Lewis?
Grant Lewis is registered in NPPES with the primary taxonomy of Hematology & Oncology 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 2018-07-30.