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LOUIS F. CASTLE JR. LCSW
NPI 1720201304
Social Worker - Clinical in Princeton, NJ

Active since April 11, 2007PECOS EnrolledAccepts Medicare Assignment
78.85/100
CMS Quality Rating
20 NASSAU ST STE 310, PRINCETON, NJ 08542(732) 491-7056 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Louis F. Castle Jr. Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LOUIS F. CASTLE JR. LCSW (NPI 1720201304) is an individual clinical provider in Princeton, New Jersey, licensed in New Jersey (44SC05252000) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1997).

NPPES Registry Identity

NPI1720201304
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameLOUIS F. CASTLE JR.Credential: LCSW
Location Address20 NASSAU ST STE 310Princeton, NJ 08542-4509
Mailing Address24 Amethyst WayFranklin Park, NJ 08823-1652 · (732) 398-1661
Phone(732) 491-7056
Sole ProprietorYes
Medical School CMSOtherGraduated 1997
Enumeration DateApril 11, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1720201304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NJ · 44SC05252000
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
20 NASSAU ST STE 310, Princeton, NJ 08542
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Louis F. Castle Jr. Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8022329481
PECOS Enrollment IDI20150625002209
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Louis Castle reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Supportive Care Psychology Of Nj PC
30 mi
Clinical
27 RANDOLPH RD
Howell, NJ 07731
  • Reassigned Medicare billing, New Jersey enrollment
  • 58 clinicians in this Medicare group
NPI 1356840003 (718) 298-4375

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 30 minutes 90832
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.
1,125 services47 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
33 services33 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 08542 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $61.59 – $185.05
Typical copayment $0.00 (range $15.39 – $46.26)
Most-billed visit code NA
Established Patient
$76.45 typical visit price
range $20.08 – $150.98
Typical copayment $19.11 (range $5.02 – $37.74)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

78.85/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality72.67
Improvement Activities40
Cost46.27

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. DORIANNE MARCUS AGARWAL LCSW, CEAP
Social Worker (Clinical)
20 NASSAU ST STE 310
PRINCETON, NJ 08542
Mercer County (646) 246-1332

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Louis Castle's NPI number?

The NPI number for Louis Castle is 1720201304. It was assigned to this individual provider in the NPPES registry on April 11, 2007.

Where is Louis Castle located?

Louis Castle practices at 20 Nassau St Ste 310, Princeton, NJ 08542. The listed phone number is (732) 491-7056.

What is Louis Castle's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Louis Castle enrolled in Medicare?

Yes. Louis Castle is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Louis Castle's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louis Castle reassigns Medicare benefits to Supportive Care Psychology Of Nj PC (Howell, NJ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Louis Castle's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Louis Castle accept?

Health plans from Ambetter Health list Louis Castle as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Louis Castle was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.