Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert C Sonnenschein, M.D.

Cardiovascular Disease Physician in Tulsa, OK · enumerated 2006.

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

National Provider Identifier

1306816855

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Registry record

Entity type Individual (Type 1)

Name Robert C Sonnenschein

Credential M.D.

Sex Male

Practice address 1265 S Utica Ave, Suite 300, Tulsa, OK, 74104

Phone (918) 592-0999

Fax (918) 592-1021

Enumeration date Jan 26, 2006

Last updated in NPPES Sep 4, 2014

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 13387 (OK) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 13387 (OK) 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
100020610A	Medicaid	OK	-
OK400799	Other	OK	MEDICARE PTAN
060007653	Other	OK	MEDICARE RAILROAD
P00611420	Other	OK	MEDICARE RAILROAD

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

Where does Robert Sonnenschein practice?

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

What is the NPI number for Robert Sonnenschein?

The National Provider Identifier (NPI) for Robert Sonnenschein is 1306816855, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-04.