Kiefer Greenspan
NPI 1629573464ActiveIndividual· Psychiatry & Neurology, Psychiatry· Irvine, CA
Psychiatry & Neurology, Psychiatry in Irvine, California, trained at University of Pittsburgh School of Medicine (class of 2018). 198 Medicare patients in 2024, $235,749 paid; nearly all of their 1,456 Part D prescriptions were generic (95%). Vanda Pharmaceuticals Inc. was the largest of 20 companies reporting payments in 2025, $2,556 in all, mostly food and beverage.
Overview
| NPI | 1629573464 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 26, 2018 |
| Last updated in NPPES | Jun 16, 2025 |
| Certified by provider | Jun 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A176625 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 198 |
|---|---|
| Services billed | 3,028 across 17 procedure codes |
| Paid by Medicare | $235,749 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,456 · 2,358 30-day fills |
|---|---|
| Patients | 108 |
| Total drug cost | $138,175 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Harbor Psychiatry and Mental Health Professional CorporationNewport Beach, CA · 19 clinicians
Hospital affiliation
- Providence St. Joseph HospitalOrange, CA
Industry payments (Open Payments)
- 2025$2,556 · 106 payments from 20 companies
- 2024$4,708 · 204 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vanda Pharmaceuticals Inc. | $412.07 | 13 |
| Neurocrine Biosciences, Inc. | $403.27 | 15 |
| Lundbeck LLC | $223.36 | 10 |
| E.R. Squibb & Sons, L.L.C. | $217.39 | 9 |
| Janssen Pharmaceuticals, Inc | $198.86 | 6 |
What the 2025 payments were for
- Food and Beverage$2,556 · 106 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 87 psychiatrists in Irvine · All psychiatrists in California