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Edit this profileAt a glance
- 401 Douglas Street, Suite 504, Sioux City, IA 51104
About Dr. Olwan
Dena Z. Olwan, PhD is a clinical psychologist based in Sioux City, IA. Dena is also listed as specializing in psychologist — clinical and psychologist. The provider's National Provider Identifier (NPI) is 1588648596.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (712) 258-1000
- Email not available
Practice Locations
401 DOUGLAS STREET SUITE 504
Sioux City, IA 51104
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other clinical psychologists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other clinical psychologists in Sioux City 3
Same specialty, same city.
More connections — 15 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Other 7
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Olwan's specialty?
Dr. Olwan is a clinical psychologist in Sioux City, IA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Olwan?
Dr. Olwan is listed at 401 Douglas Street Suite 504, Sioux City, IA 51104. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Olwan?
The number on file is (712) 258-1000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Olwan's NPI number?
Dr. Olwan's National Provider Identifier is 1588648596. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Olwan's medical education?
Dr. Olwan attended Other, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Olwan been practicing?
Dr. Olwan has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Olwan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Olwan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.