Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ralph Silverman, MD

Colon & Rectal Surgery Physician in St. Louis, MO · enumerated 2005 · practices at Colorectal Specialists, PC.

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

National Provider Identifier

1801899141

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Registry record

Entity type Individual (Type 1)

Name Dr. Ralph Silverman

Credential MD

Sex Male

Practice address 12345 West Bend Dr., Suite 303, St. Louis, MO, 63128

Phone (314) 849-1811

Fax (314) 849-7470

Enumeration date May 31, 2005

Last updated in NPPES Mar 16, 2021

Taxonomy & licenses

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 115610 (MO) Secondary

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License MD115610 (MO) 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
207535204	Medicaid	MO	-

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

Where does Ralph Silverman practice?

The practice location on file with NPPES is in St. Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ralph Silverman?

The National Provider Identifier (NPI) for Ralph Silverman is 1801899141, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

David Schuval Colon & Rectal Surgery Physician · St. Louis, MO NPI 1114993706 Colorectal Specialists, PC Colon & Rectal Surgery Physician · St. Louis, MO NPI 1851496574

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-16.