Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Douglas B Tippin, M.D., PHD

Radiation Oncology Physician in Warrenville, IL · enumerated 2005 · practices at Cdh Cancer Center.

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

National Provider Identifier

1013900281

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Registry record

Entity type Individual (Type 1)

Name Dr. Douglas B Tippin

Credential M.D., PHD

Sex Male

Practice address 4405 Weaver Pkwy, Warrenville, IL, 60555

Phone (630) 933-7811

Fax (630) 352-5349

Enumeration date Aug 23, 2005

Last updated in NPPES Sep 29, 2025

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License CDRH.0040881 (CO) Secondary

174400000X Specialist Other Service Providers · License 40881 (CO) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License C154753 (CA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 036164254 (IL) 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
04004909	Medicaid	CO	-

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 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.

What specialty is Douglas Tippin?

Douglas Tippin is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-29.