ALEXANDRA HYEJOO YOON
NPI 1427511237
Psychiatry & Neurology - Child & Adolescent Psychiatry in White Plains, NY

NPI Status: Active since April 09, 2019

Contact Information

21 BLOOMINGDALE RD
WHITE PLAINS, NY
ZIP 10605
Phone: (888) 694-5700

NPI Profile Information
Primary Taxonomy
Group Taxonomy
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Psychiatry & Neurology
Child & Adolescent Psychiatry
PECOS Enrolled

About ALEXANDRA YOON

This page provides the complete NPI Profile along with additional information for Alexandra Yoon, a provider established in White Plains, New York with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry . The healthcare provider is registered in the NPI registry with number 1427511237 assigned on April 2019. The practitioner's primary taxonomy code is 2084P0804X with license number 33-0978 (NY). The provider is registered as an individual and her NPI record was last updated 2 years ago. Alexandra Yoon operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI: 1427511237
Provider Name: ALEXANDRA HYEJOO YOON
Gender: Female
Entity Type: Individual
Location Address: 21 BLOOMINGDALE RD WHITE PLAINS, NY 10605
Location Phone: (888) 694-5700
Mailing Address: 21 BLOOMINGDALE RD WHITE PLAINS, NY 10605
Mailing Phone: (888) 694-5700
Is Sole Proprietor?: Yes
Enumeration Date: 04-09-2019
Last Update Date: 08-28-2024
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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: Psychiatry & Neurology Child & Adolescent Psychiatry
Taxonomy Code: 2084P0804X
Type: Allopathic & Osteopathic Physicians
License No.: 33-0978
License State: NY
Taxonomy Description: Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

Medicare Participation & PECOS Enrollment Status

Alexandra Yoon 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, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

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
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): Yes
Eligible to Order or Refer Power Mobility Devices: Yes

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1427511237, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 6

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 2 → 4 5 → 10 → 1 1 → 2 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 4 + 4 + 7 + 1 + 0 + 1 + 2 + 2 + 6 + 24 = 53

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1427511237.