Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin Maurice Solomon, MD

Hematology & Oncology Physician in Sioux Falls, SD · enumerated 2007.

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

National Provider Identifier

1912107368

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Registry record

Entity type Individual (Type 1)

Name Benjamin Maurice Solomon

Credential MD

Sex Male

Practice address 1000 E. 23rd St., Suite 230, Sioux Falls, SD, 57105

Phone (605) 322-6900

Fax (605) 322-6901

Enumeration date Jul 24, 2007

Last updated in NPPES Oct 16, 2018

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 8825 (SD) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 50980 (MN) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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
6008412	Medicaid	SD	-

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

What specialty is Benjamin Solomon?

Benjamin Solomon 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-16.