Herbert Marshak, MD
NPI 1235232802 · General Practice Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Herbert Marshak, MD is a General Practice Physician provider in Los Angeles, CA (NPI 1235232802).
Provider details
- NPI number
- 1235232802
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A29118 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 36 |
| Atorvastatin Calcium | 22 |
| Metoprolol Tartrate | 14 |
| Escitalopram Oxalate | 13 |
| Allopurinol | 12 |
| Amantadine Hclbrand: Amantadine | 12 |
| Benazepril Hcl | 12 |
| Donepezil Hcl | 12 |
| Hydrochlorothiazide | 12 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-07
- Last updated
- 2015-07-14
Frequently asked questions
- What is Herbert Marshak's NPI number?
- Herbert Marshak's National Provider Identifier (NPI) is 1235232802, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Herbert Marshak's specialty?
- Herbert Marshak is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Herbert Marshak located?
- Herbert Marshak's practice location on file with NPPES is 1711 W Temple St, Los Angeles, CA 90026-5421.
- What is Herbert Marshak's phone number?
- The practice phone number listed in the NPPES registry for Herbert Marshak is (213) 484-6681.
- Does Herbert Marshak accept Medicare?
- Herbert Marshak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Herbert Marshak's NPI active?
- Yes — Herbert Marshak's NPI (1235232802) is active in the NPPES registry as of the last update on 2015-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.