Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Bisignani, MD

Radiation Oncology Physician in Ukiah, CA · enumerated 2005.

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

National Provider Identifier

1487655882

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Registry record

Entity type Individual (Type 1)

Name Mark A Bisignani

Credential MD

Sex Male

Practice address 1165 S Dora St, Ukiah, CA, 95482

Phone (707) 463-3636

Fax (707) 463-2714

Enumeration date Aug 9, 2005

Last updated in NPPES Nov 28, 2023

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 38599 (MN) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License G151223 (CA) 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
18A02BU	Other	MN	BLUE CROSS/SHIELD
2400131	Other	MN	MEDICA PRIMARY
2400132	Other	MN	MEDICA
32628800	Medicaid	MN	-
112202	Other	MN	UCARE
26712	Other	MN	AMERICA'S PPO
108453	Other	MN	CHOICE PLUS
963071012227	Other	MN	PREFERRED ONE
HP19060	Other	MN	HEALTH PARTNERS
001219000	Medicaid	MN	-

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 Mark Bisignani?

The National Provider Identifier (NPI) for Mark Bisignani is 1487655882, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Bisignani practice?

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

Other providers at this practice address

Browse all →

Laurence Hartley Gynecology Physician · Ukiah, CA NPI 1083647226 Donald Coursey Otolaryngology Physician · Ukiah, CA NPI 1689770364 Thomas Kilkenny Orthopaedic Surgery Physician · Ukiah, CA NPI 1114007093 Aldis Baltins Orthopaedic Surgery Physician · Ukiah, CA NPI 1215006143 Ukiah Adventist Hosptial Rural Health Clinic/Center · Ukiah, CA NPI 1780754374 Ukiah Adventist Hosptial Rural Health Clinic/Center · Ukiah, CA NPI 1861562456 Qi Zhang Otolaryngology Physician · Ukiah, CA NPI 1194085324 Gary Wyatt Andrus Audiologist-Hearing Aid Fitter · Ukiah, CA NPI 1427301019

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-28.