Dr. Herbert Marshak, MD
- Medicare services, 2019
- 176
- Part D claims, 2024
- 255
- Industry payments
- $2,162
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1510 S Cotner Ave, Los Angeles, CA 90025
- Practice phone
- Call (310) 445-2951
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Beverly Radiology Medical Group III
Los Angeles, California
Find Dr. Marshak's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Herbert Marshak is a general practice physician in Los Angeles, California
Dr. Marshak practices at Beverly Radiology Medical Group III in Los Angeles, California.
Dr. Marshak's NPI, 1235232802, was assigned on September 7, 2006. Dr. Marshak holds California license A29118.
- NPI
- 1235232802NPI Registry (opens in a new tab)
- NPI enumeration date
- September 7, 2006
- NPI status
- Active
- Practice phone
- (310) 445-2951
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Herbert Marshak practices at Beverly Radiology Medical Group III in Los Angeles, California
Dr. Marshak's primary practice is Beverly Radiology Medical Group III, at 1510 S Cotner Ave, Los Angeles, CA 90025 in Los Angeles County. The practice phone is (310) 445-2951.
- Beverly Radiology Medical Group III1510 S Cotner Ave, Los Angeles, CA 90025 · Los Angeles CountyPhone(310) 445-2951
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Herbert Marshak is affiliated with 2 sites of care and 1 medical group
Dr. Marshak's primary practice is Beverly Radiology Medical Group III in Los Angeles, California. The medical group on file is Innovative Medical Solutions (IMS Med Group). Dmand AI also links Dr. Marshak to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Herbert Marshak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marshak practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beverly Radiology Medical Group III | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Herbert Marshak is one of 1,526 general practice physicians in California
General practice is Dr. Marshak's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Marshak is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
General practice physicians near Dr. Marshak
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Herbert Marshak billed Medicare for 176 services in 2019
CMS data shows 176 Medicare services from Dr. Marshak across 2 procedure codes in 2019. Medicare paid $10,221 for them.
Dr. Marshak's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 2592019: 17632%
Where Dr. Marshak's Medicare services took place, 2019
- In an office4827%
- In a facility12873%
Dr. Marshak compared with the California median for general practice physicians, 2019
- Dr. Marshak
- California median
- Medicare services
- 176vs 26233% below
- Part D claims
- 180vs 1926% below
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Marshak's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marshak and other general practice physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Herbert Marshak's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Marshak's median patient age at 71, with 29% women.
Dr. Marshak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women29%
- Men71%
Source: Dmand AI Patient Panel Data
Dr. Herbert Marshak wrote 255 Medicare Part D claims in 2024
In 2024, Dr. Marshak wrote 255 Medicare Part D claims. 80% of them were for generic drugs. CMS names the drug for 180 of them, across 12 drugs with 11 or more claims each, at $3,723 in total drug cost. In 2023, CMS named 183 claims across 11 drugs.
Dr. Marshak's Part D claims by kind of drug, 2024
- Generic205 claims80%
- Brand-name50 claims20%
Dr. Marshak's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Marshak's Part D claims, 2024
- Antipsychotics, patients 65 and over6%16 of 255 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1832024: 1802%
Drugs named by CMS: 12 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Herbert Marshak received $2,162 in industry payments from 2016 to 2020
CMS Open Payments shows 56 general payments to Dr. Marshak from 8 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 94% of the total. Novo Nordisk Inc paid the most, $683.
General payments to Dr. Marshak by program year, 2016 to 2020
General payments to Dr. Marshak by kind, 2016 to 2020
- Food and beverage$2,03994%
- Education$1236%
Companies that paid Dr. Marshak the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Herbert Marshak's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Herbert Marshak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Herbert Marshak's NPI number?
Dr. Herbert Marshak's NPI number is 1235232802. It was assigned on September 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Herbert Marshak?
Dr. Herbert Marshak is a general practice physician in Los Angeles, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Herbert Marshak practice?
Dr. Marshak practices at 1510 S Cotner Ave, Los Angeles, CA 90025. Dr. Marshak's primary practice is Beverly Radiology Medical Group III in Los Angeles, California. Dmand AI also links Dr. Marshak to 1 group practice or clinic.
What is Dr. Herbert Marshak's office phone number?
The practice phone on file for Dr. Marshak is (310) 445-2951.
What is Dr. Herbert Marshak's medical license number?
Dr. Marshak holds California license A29118.
What medical group is Dr. Herbert Marshak part of?
Dr. Marshak is linked to Innovative Medical Solutions (IMS Med Group).
Does Dr. Herbert Marshak accept Medicare?
Yes. CMS data shows Dr. Marshak billed Medicare for 176 services in 2019.
What services does Dr. Herbert Marshak bill to Medicare?
In 2019, Dr. Marshak's most billed Medicare services were nursing facility care (99308) and office visit, established patient (99213).
What drugs does Dr. Herbert Marshak prescribe most?
In 2024 Medicare Part D data, Dr. Marshak's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Metoprolol Tartrate.
Has Dr. Herbert Marshak received payments from drug or device companies?
CMS Open Payments shows $2,162 in general payments to Dr. Marshak from 8 companies from 2016 to 2020. The largest total came from Novo Nordisk Inc.
How long has Dr. Herbert Marshak been practicing?
Dr. Marshak's NPI was assigned in 2006.
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