2026 NPPES data Clinical Social Worker NPI 1003998360 LCSW
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Marc Rabinowitz, LCSW

Clinical Social Worker in Norfolk, Virginia. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 272,898 in Clinical Social Worker, 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.
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Marc Rabinowitz, LCSW is a Clinical Social Worker in Norfolk, Virginia, listed in the federal CMS National Provider Identifier registry.

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.

What does the federal data show about Marc Rabinowitz, LCSW?

Quality data not reported

NPI registry status

Active

Issued 10/19/2006

NPI 1003998360

Primary specialty

Clinical Social Worker

High-volume

272,898 US NPIs in this specialty

Specialty distribution in Virginia

How Clinical Social Worker compares to other specialties among Virginia providers

Virginia providers

Largest specialties in Virginia (% of in-state providers)

Behavior Technician — 5.2%Behavior Technician5.2%Clinical Social Worker — 5.1%Clinical Social Worker5.1%Student in an Organized Health Care Education/Training Program — 4.7%Student in an Organized Health Care Education/Training Program4.7%Physical Therapist — 4.6%Physical Therapist4.6%Pharmacist — 4.5%Pharmacist4.5%Professional Counselor — 4%Professional Counselor4%
Largest specialties in Virginia (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Social Worker (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Social Worker ABMS/AOA estimate

Est. board-certified rate (Clinical Social Worker) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Social Worker) — 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 Rabinowitz, LCSW appears in the CMS NPPES registry as a Clinical Social Worker provider holding LCSW credentials at 327 W 21ST ST, Norfolk, VA, 23517, with a listed phone of (757) 622-9852. NPI 1003998360 was issued on 10/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Rabinowitz 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal — many Clinical Social Worker providers operate outside Part D entirely.

Clinical Social Worker is a high-volume specialty nationwide, with 272,898 enrolled providers across 56 states and an average of 716 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

327 W 21ST ST
Norfolk, VA 23517

Provider Details

NPI 1003998360
Specialty Clinical Social Worker
Credentials LCSW
Gender Male
NPI Issued 10/19/2006

Clinical Social Worker Overview

How Marc Rabinowitz, LCSW fits within the Clinical Social Worker landscape nationally.

272,898
Clinical Social Worker Providers in US
56
States with Clinical Social Worker
716
Avg Claims per Provider

Nearby Clinical Social Worker Providers in Virginia

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

Compare Clinical Social Worker 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 Virginia medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Clinical Social Worker 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.

Frequently Asked Questions

What is Marc Rabinowitz, LCSW's specialty?
Marc Rabinowitz, LCSW specializes in Clinical Social Worker and practices in Norfolk, Virginia. Credentials: LCSW.
Where is Marc Rabinowitz, LCSW located?
Marc Rabinowitz, LCSW is located at 327 W 21ST ST, Norfolk, VA, 23517. Phone: (757) 622-9852.
What is Marc Rabinowitz, LCSW's NPI number?
Marc Rabinowitz, LCSW's National Provider Identifier (NPI) is 1003998360, issued on 10/19/2006.
How many Clinical Social Worker providers are there in the US?
There are 272,898 Clinical Social Worker providers across 56 states in the US. The average Clinical Social Worker provider writes 716 Medicare Part D claims per year.
Does Marc Rabinowitz, LCSW accept Medicare?
Marc Rabinowitz, LCSW appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marc Rabinowitz, LCSW's credentials?
Marc Rabinowitz, LCSW's NPI is 1003998360 with credentials LCSW. 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.
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.