Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Derek Steven Serna, M.D.

Hematology & Oncology Physician in Waukesha, WI · enumerated 2007.

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

National Provider Identifier

1205044773

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Registry record

Entity type Individual (Type 1)

Name Dr. Derek Steven Serna

Credential M.D.

Sex Male

Practice address N16w24131 Riverwood Dr, Waukesha, WI, 53188

Phone (262) 696-5690

Enumeration date May 18, 2007

Last updated in NPPES Jan 6, 2025

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 35091934 (OH) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 01069267A (IN) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 69134 (WI) 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
201035110	Medicaid	IN	-
000000721848	Other	IN	ANTHEM

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 Derek Serna?

Derek Serna is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Debra Muggler Internal Medicine Physician · Waukesha, WI NPI 1942274055 Timothy Wassenaar Hematology & Oncology Physician · Waukesha, WI NPI 1518928993 Robert Krippendorf Internal Medicine Physician · Waukesha, WI NPI 1811941164 Prohealth Medical Group Inc Internal Medicine Physician · Waukesha, WI NPI 1114966231 Christopher Burnett MOHS-Micrographic Surgery Physician · Waukesha, WI NPI 1780863779 Kinex Medical Company, LLC Durable Medical Equipment & Medical Supplies · Waukesha, WI NPI 1053691451 Annalyse Victor Primary Care Nurse Practitioner · Waukesha, WI NPI 1932464468 David Linn Otolaryngology Physician · Waukesha, WI NPI 1427391283

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-06.