Pamela Diefenbach, M.D.
NPI 1437100609 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Pamela Diefenbach, M.D. is a Psychiatry Physician provider in Los Angeles, CA (NPI 1437100609).
Provider details
- NPI number
- 1437100609
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G64167 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bupropion Hclbrand: Bupropion Xl | 28 | 19 |
| Trazodone Hcl | 23 | 14 |
| Fluoxetine Hcl | 22 | 12 |
| Sertraline Hcl | 19 | 11 |
| Aripiprazole | 18 | — |
| Duloxetine Hcl | 15 | 11 |
| Mirtazapine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-13
- Last updated
- 2021-11-18
Frequently asked questions
- What is Pamela Diefenbach's NPI number?
- Pamela Diefenbach's National Provider Identifier (NPI) is 1437100609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Pamela Diefenbach's specialty?
- Pamela Diefenbach is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Pamela Diefenbach located?
- Pamela Diefenbach's practice location on file with NPPES is 11301 Wilshire Blvd, Los Angeles, CA 90073-1003.
- What is Pamela Diefenbach's phone number?
- The practice phone number listed in the NPPES registry for Pamela Diefenbach is (310) 268-4037.
- Does Pamela Diefenbach accept Medicare?
- Pamela Diefenbach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Pamela Diefenbach's NPI active?
- Yes — Pamela Diefenbach's NPI (1437100609) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.