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

Kiefer Greenspan

Individual provider Psychiatry Physician · NPI 1629573464

Kiefer Greenspan is a Psychiatry in Irvine, California. Graduated from University of Pittsburgh School of Medicine in 2018, 8 years ago. Practices with Harbor Psychiatry and Mental Health Professional Corporation, a 19-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
8
Trained at
University of Pittsburgh School of Medicine
Licensed in
CA
In the registry since
2018
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Practice location Address checks out

2646 Dupont Dr Ste 60 #203
Irvine, CA 92612
Phone: (949) 230-3543
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A176625 (CA)

Record details

NPI number1629573464
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 26, 2018
Last updated in NPPESJune 16, 2025
Certification dateJune 16, 2025
Mailing address2646 Dupont Drive Suite 60, 203, Irvine, CA 92612

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Harbor Psychiatry And Mental Health Professional Corporation — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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