2026 NPPES data Urology Physician NPI 1679644579 MD
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MARC HERSKOWITZ, MD

Urology Physician in WOODLAND HILLS, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 439 beneficiaries · Urology Physician avg: 1K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$37.73
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARC HERSKOWITZ, MD filed 1,285 Medicare Part D claims in 2023 as a Urology Physician in WOODLAND HILLS, California, prescribing 97% generic.

1K
Part D claims, 2023
97%
generic prescribing
Likely
board-certified (heuristic)

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.

MARC HERSKOWITZ, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,285 Top 22% higher than 78% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

Board certification likely (heuristic — not verified)

MARC HERSKOWITZ, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MARC HERSKOWITZ, MD?

Quality data not reported

NPI registry status

Active

Issued 11/13/2006

NPI 1679644579

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

1,285 0% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

Specialty distribution in California

How Urology Physician compares to other specialties among California providers

California providers

Urology Physician share within California

1. Urology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Urology Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Urology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Urology Physician ABMS/AOA estimate

Est. board-certified rate (Urology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Urology Physician) — ABMS / AOA estimate

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).

MARC HERSKOWITZ, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 5601 DE SOTO AVE, WOODLAND HILLS, CA, 91367, with a listed phone of (818) 719-2000. NPI 1679644579 was issued on 11/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HERSKOWITZ most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,285 prescription claims written by this provider, covering 439 Medicare beneficiaries and totaling roughly $75K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 2.4%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 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

5601 DE SOTO AVE
WOODLAND HILLS, CA 91367

Provider Details

NPI 1679644579
Specialty Urology Physician
Credentials MD
Gender Male
NPI Issued 11/13/2006

Hospital and facility affiliations

Facilities where MARC HERSKOWITZ, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
WOODLAND HILLS, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 MARC HERSKOWITZ, MD. Source: openpaymentsdata.cms.gov.

Total received

$38

Largest payer

Pulmonx Corporation

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 — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to MARC HERSKOWITZ, MD. To verify MARC HERSKOWITZ, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

MARC HERSKOWITZ, MD — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 1,285 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,285
Total Claims
$75K
Total Drug Cost
439
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,569
Total Day Supply
102,848
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$48K
Generic Drug Cost
$27K
Opioid Claims
31 (2.4% rate)
Antibiotic Claims
139

Patient Demographics

Average Patient Age
77.4 years
Avg HCC Risk Score
1.47
Gender Split
12% female / 88% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What MARC HERSKOWITZ, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Tamsulosin Hcl
413
Finasteride
357
Terazosin Hcl
106
Trospium Chloride
53
Tadalafil
44
Ciprofloxacin Hcl
38
Myrbetriq
Mirabegron
36
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
33
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
30
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
29

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Urology Physician Overview

How MARC HERSKOWITZ, MD fits within the Urology Physician landscape nationally.

13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider

MARC HERSKOWITZ, MD's 1,285 claims are above the specialty average of 1,280.

Nearby Urology Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as HERSKOWITZ.

Compare Urology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARC HERSKOWITZ, MD's specialty?
MARC HERSKOWITZ, MD specializes in Urology Physician and practices in WOODLAND HILLS, California. Credentials: MD.
How much does MARC HERSKOWITZ, MD prescribe under Medicare Part D?
In 2023, MARC HERSKOWITZ, MD wrote 1,285 Medicare Part D claims totaling $75K in drug costs for 439 beneficiaries.
Where is MARC HERSKOWITZ, MD located?
MARC HERSKOWITZ, MD is located at 5601 DE SOTO AVE, WOODLAND HILLS, CA, 91367. Phone: (818) 719-2000.
What is MARC HERSKOWITZ, MD's NPI number?
MARC HERSKOWITZ, MD's National Provider Identifier (NPI) is 1679644579, issued on 11/13/2006.
Does MARC HERSKOWITZ, MD prescribe more brand-name or generic drugs?
MARC HERSKOWITZ, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $48K in brand drug costs.
Does MARC HERSKOWITZ, MD prescribe opioids?
Yes, MARC HERSKOWITZ, MD had 31 opioid claims in 2023 with an opioid prescribing rate of 2.4%.
How many Urology Physician providers are there in the US?
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does MARC HERSKOWITZ, MD prescribe most often?
Based on 2023 Medicare Part D data, MARC HERSKOWITZ, MD's most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Terazosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARC HERSKOWITZ, MD accept Medicare?
MARC HERSKOWITZ, MD appears in CMS Medicare data with 1,285 Part D claims and 439 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARC HERSKOWITZ, MD's credentials?
MARC HERSKOWITZ, MD's NPI is 1679644579 with credentials MD. 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

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