NPI registry status
Active
2026 NPPES data Independent Medical Examiner Physician NPI 1750365318 M.D.
Verify on CMS → David Marshak, M.D.
Independent Medical Examiner Physician in Bronx, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 219 in Independent Medical Examiner Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
600
Medicare Part D claims · 44 beneficiaries · Independent Medical Examiner Physician avg: 564
Industry payments
$61.38
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Marshak, M.D. filed 600 Medicare Part D claims in 2023 as a Independent Medical Examiner Physician in Bronx, New York.
- 600
- Part D claims, 2023
- $61.38
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
David Marshak, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
600 Top 31% higher than 69% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about David Marshak, M.D.?
Quality data not reportedPrimary specialty
Independent Medical Examiner Physician
Medicare Part D claims
600 6% vs specialty avg
Specialty distribution in New York
How Independent Medical Examiner Physician compares to other specialties among New York providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Independent Medical Examiner Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
David Marshak, M.D. appears in the CMS NPPES registry as a Independent Medical Examiner Physician provider holding M.D. credentials at 729 PELHAM PKWY N, Bronx, NY, 10467, with a listed phone of (718) 881-4100. NPI 1750365318 was issued on 12/06/2005.
Medicare Part D records for calendar year 2023 show 600 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $37K in drug spend, with an opioid prescribing rate of 39.7%.
Independent Medical Examiner Physician is a narrow specialty nationwide, with 219 enrolled providers across 41 states and an average of 564 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1750365318 |
|---|---|
| Specialty | Independent Medical Examiner Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/06/2005 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for David Marshak, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$61
Largest payer
DePuy Synthes Sales Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - New York NYSBPMC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 - they are NOT specific to David Marshak, M.D.. To verify David Marshak, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
600
Total Claims
$37K
Total Drug Cost
44
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 635
- Total Day Supply
- 18,389
- Generic Drug Cost
- $20K
- Opioid Claims
- 238 (39.7% rate)
Patient Demographics
- Average Patient Age
- 65.7 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 21, 65-74: 14, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Marshak, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
130 claims
- Gabapentin
Gabapentin
91 claims
- Hydromorphone Hcl 36
Hydromorphone Hcl
36 claims
- Methadone Hcl 25
Methadone Hcl
25 claims
- Diclofenac Sodium 24
Diclofenac Sodium
24 claims
- Doxepin Hcl 24
Doxepin Hcl
24 claims
- Oxycodone Hcl 24
Oxycodone Hcl
24 claims
- Desipramine Hcl 22
Desipramine Hcl
22 claims
| Drug | Claims |
|---|---|
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 130 |
| Gabapentin | 91 |
| Hydromorphone Hcl | 36 |
| Methadone Hcl | 25 |
| Diclofenac Sodium | 24 |
| Doxepin Hcl | 24 |
| Oxycodone Hcl | 24 |
| Desipramine Hcl | 22 |
| Amitriptyline Hcl | 21 |
| Duloxetine Hcl | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Independent Medical Examiner Physician in NY →
All providers in New York →
Compare specialties →
Independent Medical Examiner Physician Overview
How David Marshak, M.D. fits within the Independent Medical Examiner Physician landscape nationally.
219
Independent Medical Examiner Physician Providers in US
41
States with Independent Medical Examiner Physician
564
Avg Claims per Provider
David Marshak, M.D.'s 600 claims are above the specialty average of 564.
Nearby Independent Medical Examiner Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Marshak.
Dr. David Brill
MD, MA, MPH
Albany, NY
Dr. Burton Diamond
MD
Rockville Centre, NY
Dr. Michael Feinberg
M.D.
Buffalo, NY
Dr. Merritt Hait
MD
New York, NY
Dr. Donald Jacob
M.D.
East Amherst, NY
Compare Independent Medical Examiner Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Independent Medical Examiner Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New York
Frequently Asked Questions
What is David Marshak, M.D.'s specialty? ▼
David Marshak, M.D. specializes in Independent Medical Examiner Physician and practices in Bronx, New York. Credentials: M.D..
How much does David Marshak, M.D. prescribe under Medicare Part D? ▼
In 2023, David Marshak, M.D. wrote 600 Medicare Part D claims totaling $37K in drug costs for 44 beneficiaries.
Where is David Marshak, M.D. located? ▼
David Marshak, M.D. is located at 729 PELHAM PKWY N, Bronx, NY, 10467. Phone: (718) 881-4100.
What is David Marshak, M.D.'s NPI number? ▼
David Marshak, M.D.'s National Provider Identifier (NPI) is 1750365318, issued on 12/06/2005.
Does David Marshak, M.D. prescribe opioids? ▼
Yes, David Marshak, M.D. had 238 opioid claims in 2023 with an opioid prescribing rate of 39.7%.
How many Independent Medical Examiner Physician providers are there in the US? ▼
There are 219 Independent Medical Examiner Physician providers across 41 states in the US. The average Independent Medical Examiner Physician provider writes 564 Medicare Part D claims per year.
What drugs does David Marshak, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, David Marshak, M.D.'s most frequently prescribed drugs include Oxycodone-Acetaminophen, Gabapentin, Hydromorphone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Marshak, M.D. accept Medicare? ▼
David Marshak, M.D. appears in CMS Medicare data with 600 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Marshak, M.D.'s credentials? ▼
David Marshak, M.D.'s NPI is 1750365318 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.