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

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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