DR. DENA Z OLWAN PHD
NPI 1588648596
Psychologist in Sioux City, IA

Active since December 02, 2005PECOS Enrolled
401 DOUGLAS STREET, SUITE 504, SIOUX CITY, IA 51104(712) 258-1000(712) 252-1100 Get Directions Write a Review

NPPES record last updated: August 1, 2021. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Dr. Dena Z Olwan Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DENA Z OLWAN PHD (NPI 1588648596) is an individual psychologist in Sioux City, Iowa, licensed in Iowa (00703) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS and is a graduate of Other (1992).

NPPES Registry Identity

NPI1588648596
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. DENA Z OLWANCredential: PHD
Location Address401 DOUGLAS STREET, SUITE 504Sioux City, IA 51104-1471
Mailing Address401 Douglas St Ste 504Sioux City, IA 51101-1471 · (712) 258-1000 · Fax (712) 252-1100
Fax(712) 252-1100
Sole ProprietorYes
Medical School CMSOtherGraduated 1992
Enumeration DateDecember 2, 2005
Last NPPES UpdateAugust 1, 2021
NPPES CertifiedAugust 1, 2021
NPI 1588648596 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in IA · 00703
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 00703 (IA)
401 DOUGLAS STREET, Sioux City, IA 51104

Other Identifiers 1

Medicaid2157180IA

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Dena Z Olwan Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9931167129
PECOS Enrollment IDI20041220000763
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dena Olwan's NPI number?

The NPI number for Dena Olwan is 1588648596. It was assigned to this individual provider in the NPPES registry on December 2, 2005.

Where is Dena Olwan located?

Dena Olwan practices at 401 Douglas Street Suite 504, Sioux City, IA 51104. The listed phone number is (712) 258-1000.

What is Dena Olwan's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Dena Olwan enrolled in Medicare?

Yes. Dena Olwan is registered in the Medicare PECOS enrollment system.

What insurance does Dena Olwan accept?

Health plans from Avera Health Plans, Medica, Oscar Insurance Company, Sanford Health Plan and UnitedHealthcare list Dena Olwan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Dena Olwan was last updated on August 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.