MRS. KATHLEEN ANNE WILK-VAN ESSENDELFT LCSW
NPI 1821134578
Social Worker - Clinical in Miller Place, NY

NPI Status: Active since January 29, 2007

Contact Information

595 ROUTE 25A STE 20
MILLER PLACE, NY
ZIP 11764
Phone: (631) 744-5500
Fax: (631) 744-5677

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  • Individual
  • Female
  • Years of Experience 37
  • Social Worker
  • Clinical
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About KATHLEEN WILK-VAN ESSENDELFT

This page provides the complete NPI Profile along with additional information for Kathleen Wilk-van Essendelft, a provider established in Miller Place, New York with a medical specialization in Social Worker, focusing in clinical and more than 37 years of experience. She graduated from State University Of New York At Stony Brook, School Of Medicine in 1989. The healthcare provider is registered in the NPI registry with number 1821134578 assigned on January 2007. The practitioner's primary taxonomy code is 1041C0700X with license number R040232 (NY). The provider is registered as an individual and her NPI record was last updated 18 years ago.

NPI
1821134578
Provider Name
MRS. KATHLEEN ANNE WILK-VAN ESSENDELFT LCSW
Gender
Female
Entity Type
Individual
Location Address
595 ROUTE 25A STE 20 MILLER PLACE, NY 11764
Location Phone
(631) 744-5500
Location Fax
(631) 744-5677
Mailing Address
595 ROUTE 25A STE 20 MILLER PLACE, NY 11764
Mailing Phone
(631) 744-5500
Mailing Fax
(631) 744-5677
Medical School Name
STATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduation Year
1989
Is Sole Proprietor?
No
Enumeration Date
01-29-2007
Last Update Date
01-08-2008
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A clinical social worker like Kathleen Wilk-van Essendelft is licensed to diagnose and treat mental, behavioral, and emotional disorders. A clinical social worker helps patients develop strategies to change behavior or cope with difficult situations and refer patients to other resources or services, such as support groups or other mental health professionals.

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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Social Worker Clinical

Taxonomy Code
1041C0700X
Type
Behavioral Health & Social Service Providers
License No.
R040232
License State
NY
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
N7C891MEDICARE ID-TYPE UNSPECIFIED (04)NY 

Medicare Participation & PECOS Enrollment Status

Kathleen Wilk-van Essendelft is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Kathleen Wilk-van Essendelft is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4688746845

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20080730000831

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): No

  • Eligible to Order or Refer Power Mobility Devices: No

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Psychotherapy, 45 minutes

Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.

This service was performed 359 times for 19 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $0 for a new patient copayment and $20.86 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 11764 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is NA

  • Average New Patient Price $0
  • Minimum New Patient Price $67.4
  • Maximum New Patient Price $203.53
  • Average New Patient Copayment $0
  • Minimum New Patient Copayment $16.85
  • Maximum New Patient Copayment $50.88

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $83.44
  • Minimum Established Patient Price $21.66
  • Maximum Established Patient Price $164.45
  • Average Established Patient Copayment $20.86
  • Minimum Established Patient Copayment $5.41
  • Maximum Established Patient Copayment $41.11

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for MRS. KATHLEEN ANNE WILK-VAN ESSENDELFT LCSW

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1821134578
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2841238514
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 8 + 4 + 1 + 2 + 3 + 8 + 5 + 1 + 4 + 24 = 62
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 62 = 88

The NPI number 1821134578 is valid because the calculated check digit 8 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 3 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1467578575FAMILY CARE COUNSELING SERVICES, LCSW,P.C.
Organization
Social Worker (Clinical)595 ROUTE 25A STE 20
MILLER PLACE, NY 11764
(631) 744-5500
1235336496 GAIL A. RIVERA LMSW
Individual
Social Worker595 ROUTE 25A STE 20
MILLER PLACE, NY 11764
(631) 744-5500
1255108247 JEAN M GRIFFITHS LMT
Individual
Massage Therapist595 ROUTE 25A STE 20
MILLER PLACE, NY 11764
(631) 849-1586

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821134578, enumerated in the NPI registry as an "individual" on January 29, 2007

The provider is located at 595 Route 25a Ste 20 Miller Place, Ny 11764 and the phone number is (631) 744-5500

The provider's speciality is Social Worker with taxonomy code 1041C0700X with a focus in Clinical

The provider has more than 37 years of experience. She graduated from State University Of New York At Stony Brook, School Of Medicine in 1989.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging and Durable Medical Equipment (DME).

Medicare beneficiaries should expect a typical cost of $0 with an average copayment of $0 for new patient appointments. Established patients should expect a typical charge of $83.44 and an average copayment of 20.86. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Psychotherapy, 45 minutes.

This NPI record was last updated on January 29, 2007. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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