Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. David Nicholas Siemann, DO

Individual provider Family Medicine Physician · NPI 1417693441

Dr. David Nicholas Siemann, DO is a Family Practice in Aiea, Hawaii. Graduated from Rocky Vista University College of Osteopathic Med in 2022, 4 years ago. Practices with Castle Medical Center, a 77-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Hawaii.

Years since qualifying
4
Trained at
Rocky Vista University College of Osteopathic Med
Licensed in
HI
In the registry since
2022
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

98-1005 Moanalua Rd Spc 3030
Aiea, HI 96701-4735
Phone: (808) 627-3235
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence DOSR-561-0 (HI)

Record details

NPI number1417693441
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 11, 2022
Last updated in NPPESMay 11, 2022
Certification dateMay 11, 2022
Mailing address98-1005 Moanalua Rd Spc 3030, Aiea, HI 96701-4735

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolROCKY VISTA UNIVERSITY COLLEGE OF OSTEOPATHIC MED
Graduated 2022 (4 years in practice)
Group practice Castle Medical Center — 77 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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