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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Roger Albert Siemens, M.D.

Surgery Physician in Tulsa, OK · enumerated 2005.

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

National Provider Identifier

1952387847

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Registry record

Entity type Individual (Type 1)
Name Dr. Roger Albert Siemens
Credential M.D.
Sex Male
Practice address 2448 E 81st St, Suite 1100, Tulsa, OK, 74137
Phone (918) 505-3400
Fax (918) 508-7070
Enumeration date Dec 21, 2005
Last updated in NPPES Mar 13, 2015

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 10852 (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
100216800A Medicaid OK -

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 NPI 1952387847 active?
Yes, as of the latest NPPES snapshot, NPI 1952387847 is active (record last updated 2015-03-13).
How do I verify Roger Siemens's NPI record?
Cross-check NPI 1952387847 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-13.