Dr. Herbert Marshak , MD
General Practice โข Los Angeles, CA
1711 W Temple St, Suite 4100
Los Angeles, CA 900265421
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Herbert Marshak is listed in NPPES under General Practice.
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NPI assigned on September 7, 2006; this date does not establish years in practice.
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Published CMS data list 176 Original Medicare Part B services in 2019.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019. Published rows only; this is not a quality measure.
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Published Part B service records, 2019:
- 99308 โ Subsequent nursing facility care with straightforward level of medical decision making, per day: 128 service units.
- 99213 โ Established patient outpatient office visit: 48 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2018 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2019). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 180 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Levothyroxine Sodium โ 36 prescription fills, including refills.
- Atorvastatin Calcium โ 22 prescription fills, including refills.
- Metoprolol Tartrate โ 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 12 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 65% of clinicians listed under General Practice in Los Angeles, CA (2024, 73 clinicians with data). Median for this group: 911. Middle half: 99 to 3,151.
Fewer Part D prescriptions than 70% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: 753. Middle half: 125 to 3,707.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 337 in 2017 to 176 in 2019.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2019.
Practice Location & Contact Primary Location
1711 W Temple St
Suite 4100
Los Angeles, CA 900265421
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
50 people with Original Medicare in 2019
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2019.
Medicare-allowed amount
About $13,421 in 2019
The total amount Medicare approved for these services in 2019. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019.
Paid by Medicare
About $10,220 in 2019
The part of the Medicare-allowed amount that Medicare itself paid in 2019, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019.
30-day fills
182 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$3,723 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $14.46 in 2020
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2020.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Marshak has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Marshak as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Los Angeles and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 65% of clinicians listed under General Practice in Los Angeles, CA (2024, 73 clinicians with data). Median for this group: 911. Middle half: 99 to 3,151.
Fewer Part D prescriptions than 70% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: 753. Middle half: 125 to 3,707.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under General Practice in Los Angeles, CA (2024, 73 clinicians with data). Median for this group: $35,867. Middle half: $1,749 to $228,354.
A lower Part D drug cost than 70% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: $48,894. Middle half: $2,044 to $279,308.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Marshak are from 2019.
168 active clinicians are listed under General Practice with a practice address in Los Angeles, CA (1,963 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Los Angeles
9.5% of these 168 clinicians have the CMS telehealth indicator.
25% of these 168 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 48% from 337 in 2017 to 176 in 2019.
- 2017: 337
- 2018: 259
- 2019: 176
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Medicare-allowed amount
Medicare-allowed amount decreased 44% from $23,910 in 2017 to $13,421 in 2019.
- 2017: $23,910
- 2018: $21,872
- 2019: $13,421
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Paid by Medicare
Paid by Medicare decreased 45% from $18,445 in 2017 to $10,220 in 2019.
- 2017: $18,445
- 2018: $14,723
- 2019: $10,220
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 88% from 1,512 in 2020 to 180 in 2024.
- 2020: 1,512
- 2021: 740
- 2022: 271
- 2023: 183
- 2024: 180
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30-day fills
30-day fills decreased 89% from 1,716 in 2020 to 182 in 2024.
- 2020: 1,716
- 2021: 897
- 2022: 288
- 2023: 185
- 2024: 182
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Part D drug cost
Part D drug cost decreased 95% from $75,525 in 2020 to $3,723 in 2024.
- 2020: $75,525
- 2021: $59,995
- 2022: $6,742
- 2023: $3,258
- 2024: $3,723
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $183.03 in 2019 to $14.46 in 2020.
- 2019: $183.03
- 2020: $14.46
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2020), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2020 (payments made January 1 โ December 31, 2020): fewer than 11 records totaling $14.46.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
SHINGRIX | General | $14.46 |
Source: CMS Open Payments, program year 2020, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2018 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2019; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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128 | 30 | $173.31 | $74.21 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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48 | 20 | $153.00 | $81.72 |
Source: CMS Part B by Provider and Service, 2019; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 36 | 483 | $296.09 | โ |
| Atorvastatin Calcium | Atorvastatin Calcium | 22 | 614 | $408.52 | โ |
| Metoprolol Tartrate | Metoprolol Tartrate | 14 | 377 | $215.23 | โ |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | 374 | $163.42 | โ |
| Allopurinol | Allopurinol | 12 | 366 | $211.90 | โ |
| Donepezil Hcl | Donepezil Hcl | 12 | 366 | $184.54 | โ |
| Hydrochlorothiazide | Hydrochlorothiazide | 12 | 366 | $72.84 | โ |
| Metformin Hcl | Metformin Hcl | 12 | 366 | $370.04 | โ |
| Potassium Chloride | Potassium Chloride | 12 | 366 | $214.55 | โ |
| Benazepril Hcl | Benazepril Hcl | 12 | 366 | $374.79 | โ |
| Amantadine | Amantadine Hcl | 12 | 366 | $747.79 | โ |
| Telmisartan | Telmisartan | 11 | 330 | $463.48 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
NUCC Taxonomy Code: 207Q00000X
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
NUCC Taxonomy Code: 2084P0800X
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - FAMILY PRACTICE
I20101124000360
CA
0547456915
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Podiatrist
Specialist
Doctor of Medicine (M.D.)
Specialist
Doctor of Medicine (M.D.)
Internal Medicine - Nephrology
Doctor of Medicine (M.D.), Master of Public Health
Anesthesiology
Doctor of Medicine (M.D.)
Podiatrist - Sports Medicine
Doctor of Podiatric Medicine
Career & Practice History
NPI enumerated September 07, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other General Practices in Los Angeles
- Dr. Yen Doan, MD
- Dr. Santiago Corpuz, MD
- Dr. David Katzin, MD
- Esther Yu
- Dr. Enrique Gonzalez, MD
- Dr. Edward Meltser, DO
Mailing Address
3250 Wilshire Blvd, Suite 930
Los Angeles, CA 900101438
Phone: 2137390019