Katharine Marder, MD
NPI 1407250020 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katharine Marder, MD is a Psychiatry Physician provider in Los Angeles, CA (NPI 1407250020).
Provider details
- NPI number
- 1407250020
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A153445 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
336 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Delivery and Management90868 | 299 | $27 |
| Treatment Using Magnetic Field to Stimulate Nerve Cells in Brain, Subsequent Motor Threshold Redetermination With Delivery and Management90869 | 22 | $114 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 | $83 |
Typical Medicare-allowed amounts for these services range $27–$114 (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.
Practice location
Mailing address
Additional practice locations (1)
- 4760 Sepulveda BlvdCulver City, CA 90230-4820Phone: (888) 807-7250
Registry dates
- Enumerated
- 2014-10-09
- Last updated
- 2023-08-21
- Certified
- 2023-08-21
Frequently asked questions
- What is Katharine Marder's NPI number?
- Katharine Marder's National Provider Identifier (NPI) is 1407250020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Marder's specialty?
- Katharine Marder is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Katharine Marder located?
- Katharine Marder's practice location on file with NPPES is 760 Westwood Plz, Los Angeles, CA 90024.
- What is Katharine Marder's phone number?
- The practice phone number listed in the NPPES registry for Katharine Marder is (310) 267-7415.
- Does Katharine Marder accept Medicare?
- Katharine Marder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katharine Marder's NPI active?
- Yes — Katharine Marder's NPI (1407250020) is active in the NPPES registry as of the last update on 2023-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.