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Laboratory Services

Laboratory Services

Our mission as a department is to deliver patient-centered, physician friendly services in a fiscally responsible manner. This REFERENCE MANUAL is intended to simplify access to the full range of pathology and laboratory medicine services offered at Westchester Medical Center. It includes an updated testing compendium and appendices, current specimen requirements, and updated leadership and contact information.

We hope that you find this REFERENCE MANUAL helpful. We welcome your comments and suggestions regarding this manual and our other services. 

The laboratory is backed by the unique and substantial resources of Westchester Medical Center and serves healthcare providers throughout the medical community. Since roughly 100% of the laboratory testing is performed on site, we are able to optimize our testing schedules and provide excellent turnaround times for your patients’ results. This broad in-house capability, coupled with extensive and advanced instrumentation, electronic communication and a skilled team of laboratory professionals, enables Westchester Medical Center’s laboratory to deliver the highest level of quality and service, around the clock, seven days a week.

Westchester Medical Center’s hospital-based board certified clinical and anatomic laboratory offers a broad menu of routine and esoteric procedures. Our laboratories offer testing in the following areas:

  • Anatomic pathology
  • Coagulation - routine and special
  • Chemistry - routine and special
  • Cytology
  • Endocrinology
  • Flow cytometry
  • Hematology - routine and special
  • Immunology - diagnostic and special
  • Immunohistochemistry
  • Microbiology
  • Molecular pathology
  • Oncology markers
  • Therapeutic drug monitoring
  • Toxicology
  • Transplant immunology
  • Urinalysis
  • Virology

Our Advanced Laboratory Services Clinical Staff

Angelo Arnold, MD, PhD
James Brassel, MD
Praveen N. Chander, MD
Julia C. de la Garza, MD
John T. Fallon, MD, PhD
Lying Han, MD, PhD
Humayun Islam, MD, PhD
George M. Kleiman, MD
Chitra Kumar, MD, PhD
Patrick Lento, MD
Fouzia Shakil, MD, PhD
Hank Wang, MD, PhD
Yazmin Yusuf, MD
Minghao Zhong, MD, PhD

The Westchester Medical Center laboratory maintains the highest standards of quality at all times. Besides the daily distribution of unknown samples, technologists stringently monitor the results of standards and controls on every run. Our system utilizes a number of specific measurable events which are used to monitor and assess the quality and appropriateness of the laboratory procedures we perform. Some of those key metrics are:
  • Quantity not sufficient (QNS)
  • Test not performed
  • Turnaround time (TAT)
  • Corrected reports
  • Specimen processing errors
  • Phone response times (Alert Values)
  • Customer complaints
  • Proficiency testing evaluation

In addition to these internal controls and metrics, Westchester Medical Center subscribes to the following proficiency testing and accreditation programs set by:

  • New York State Department of Health (NYSDOH)
  • CLIA
  • College of American Pathologists (CAP)
  • American Society for Histocompatibility and Immunogenetics (ASHI)

Accreditations and Licenses

New York State Department of Health: PFI-2438
College of American Pathologists: 1238801-01
American Society for Histocompatibility and Immunogenetics (ASHI): 07-1-NY-20-1
CLIA: 33DO721132

Client Services

The laboratory is available 24 hours a day, seven days a week to respond to your inquiries and requests. The client service specialists at (914) 493-7384 are HIPAA trained and extremely knowledgeable about the laboratory and its suite of services. We are committed to providing prompt, courteous service with the highest standards.


  • Status of tests
  • Test menu
  • Test results
  • Specimen requirements
  • Add-on tests
  • Pathologist referrals
  • Specimen collection supplies
  • Scheduling a stat courier pick-up

Courier services

Regularly scheduled courier pick-up services are provided by the Westchester Medical Center laboratory. A courier will provide direct specimen pick-up, a temperature controlled environment for specimens in transit, and delivery of patient reports and specimen collection supplies.

FOR STAT PICK-UPS CALL (914) 493-7979

Advanced Laboratory Patient Service Center

Westchester Medical Center's Advanced Laboratory Services Patient Service Center (PSC) is open Monday - Friday, 8am to 5:30pm.

The Patient Service Center is located at

19 Bradhurst Avenue, Suite 2600.
Hawthorne, NY 10532

Services include a dedicated courier for pickup of any specimens in the Westchester area.

Call (914) 493-2213 to learn more.

Patient Billing

For most procedures requested, Westchester Medical Center Advanced Laboratory Services will bill patients or third party insurance directly. The test requisition form must include the patient name, address, telephone number, and guarantor information.

Third Party Billing

Westchester Medical Center Advanced Laboratory Services will bill third party, Medicare, and Medicaid directly. For these billing types the following information is required:

  1. Date of phlebotomy
  2. Patient’s date of birth, sex, age, and marital status
  3. Relationship to insured
  4. Patient’s telephone number
  5. Responsible party’s name if different than insured
  6. Insured’s mailing address
  7. Referring physician’s name (please include middle initial), address, NPI and UPIN #
  8. Applicable ICD-9 codes
  9. Complete name, address and telephone number of the primary insurance
  10. Complete name, address and telephone number of the secondary insurance company
  11. Group and policy numbers
  12. Insurance identification numbers for Medicare, Medicaid and third party payers patient’s signature
  13. Patient’s signature
  14. Physician’s signature required for all testing ordered

Medical Necessity

The Health Care Financing Administration (HCFA) is responsible for administering the Medicare Program throughout the United States. Medicare does not cover routine screening tests and will only pay for tests that meet Medicare coverage criteria. Medicare will only pay for those tests which it considers reasonable and necessary, and supported by the patient’s medical record. To document medical necessity of the ordered tests, physicians must provide ICD-9 codes specific to the patient’s condition on the specific date of service.

Advanced Beneficiary Notices

If reimbursement is denied for improper documentation of medical necessity, Medicare prohibits the laboratory from billing the patient unless an Advanced Beneficiary Notice (ABN) has been signed and dated by the patient PRIOR to the provision of service. The ABN insures the patient is informed of Medicare’s medical necessity policy, reviews why payment may be denied on the specific tests being ordered, and requires both the patient’s and physician’s signature. A copy of the Westchester Medical Center Advanced Laboratory Services ABN may be found on the back of the laboratory test requisition, and is required for Medicare patients anytime a test highlighted is ordered. The ABN should be signed and dated after the requisition has been completed. To insure complete compliance on both the laboratory’s and the physician’s part, the physician must enter the appropriate ICD-9 codes to document the medical necessity of the tests being ordered.

Please CLICK HERE to download the Advanced Beneficiary Notice form.

Ambulatory Care Pavilion
100 Woods Road
Valhalla, NY 10595
Monday – Friday
8am – 5pm
Tel – 914.493.8105
Fax (Coming Soon)

19 Bradhurst Avenue
Suite 2600, Hawthorne NY 10532
Monday – Friday
8am – 5pm
Tel – 914.493.5471
Fax – 914.493.2426

244 Westchester Avenue
Suite 209, White Plains NY 10604
Monday – Friday
8am – 5pm
Tel – 914.368.7604
Fax – 914.368.7607