NPI Portal NPI Lookup & Verification

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

Stephen Craig Ross, M.D.

Rheumatology Physician in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1891756516

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Registry record

Entity type Individual (Type 1)
Name Stephen Craig Ross
Credential M.D.
Sex Male
Practice address Saint Louis, MO, 63141
Phone (314) 567-5100
Fax (314) 567-3387
Enumeration date Mar 31, 2006
Last updated in NPPES May 17, 2012

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

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License R9A31 (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
201725603 Medicaid MO -
23560 Other MO BLUE CROSS BLUE SHIELD
A12739 Other MO PHCS
320023 Other MO UNITED HEALTH CARE
A12739 Other MO MERCY
A12739 Other MO GREAT WEST
5783152 Other MO AETNA
A12739 Other MO CIGNA

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 is the NPI number for Stephen Ross?
The National Provider Identifier (NPI) for Stephen Ross is 1891756516, a Type 1 (individual) record in the CMS NPPES registry.
Where does Stephen Ross practice?
The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-17.