Ralph Lissaur, M.D.
NPI 1245287960 · Psychiatry Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Lissaur, M.D. is a Psychiatry Physician provider in Irvine, CA (NPI 1245287960).
Provider details
- NPI number
- 1245287960
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A88975 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
444 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 340 | $132 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 72 | $73 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 32 | $185 |
Typical Medicare-allowed amounts for these services range $73–$185 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 194 | 27 |
| Trazodone Hcl | 153 | 25 |
| Risperidone | 83 | — |
| Duloxetine Hcl | 78 | 11 |
| Quetiapine Fumaratebrand: Quetiapine Fumarate Er | 76 | 14 |
| Olanzapine | 74 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,003 across 45 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ralph Lissaur's NPI number?
- Ralph Lissaur's National Provider Identifier (NPI) is 1245287960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Lissaur's specialty?
- Ralph Lissaur is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ralph Lissaur located?
- Ralph Lissaur's practice location on file with NPPES is 14252 Culver Dr, Irvine, CA 92604-0317.
- What is Ralph Lissaur's phone number?
- The practice phone number listed in the NPPES registry for Ralph Lissaur is (949) 280-9647.
- Does Ralph Lissaur accept Medicare?
- Ralph Lissaur is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Lissaur's NPI active?
- Yes — Ralph Lissaur's NPI (1245287960) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.