MRS. MARISSA BETH LEFKOWITZ RN
NPI 1316877327
Registered Nurse - Psychiatric/Mental Health, Adult in New York, NY

NPI Status: Active since May 21, 2026

Contact Information

220 E 42ND ST FL 6
NEW YORK, NY
ZIP 10017
Phone: (917) 613-5299

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  • Individual
  • Female
  • Registered Nurse
  • Psychiatric/Mental Health, Adult

About MARISSA LEFKOWITZ

This page provides the complete NPI Profile along with additional information for Marissa Lefkowitz, a provider established in New York, New York with a medical specialization in Registered Nurse, focusing in psychiatric/mental health, adult . The healthcare provider is registered in the NPI registry with number 1316877327 assigned on May 2026. The practitioner's primary taxonomy code is 163WP0809X with license number 759624 (NY). The provider is registered as an individual and her NPI record was last updated May 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1316877327
Provider Name
MRS. MARISSA BETH LEFKOWITZ RN
Gender
Female
Entity Type
Individual
Location Address
220 E 42ND ST FL 6 NEW YORK, NY 10017
Location Phone
(917) 613-5299
Mailing Address
220 E 42ND ST FL 6 NEW YORK, NY 10017
Is Sole Proprietor?
Yes
Enumeration Date
05-21-2026
Last Update Date
05-21-2026
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A registered nurse (RN) like Marissa Lefkowitz coordinates and provides patient care and educates patients about various health conditions. Registered nurses give advice and emotional support to patients and their families. The typical duties of a registered nurse include: assessing patient conditions, record medical histories and symptoms, observe patients and record the observations, administer medicines and treatments, consult and collaborate with doctors, operate and monitor medical equipment, teach patients and families how to manage injuries or illnesses, etc.

Registered nurses typically work as part of a team with physicians and other healthcare professionals. In some medical teams registered nurses supervise nursing assistants, licensed practical nurses, and home health aides.

Location Map

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

Registered Nurse Psychiatric/Mental Health, Adult

Taxonomy Code
163WP0809X
Type
Nursing Service Providers
License No.
759624
License State
NY

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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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 1316877327, 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 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
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
1
Doubled → 2
Pos 4
6
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
7
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
Check
7
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 1 → 2 8 → 16 → 7 7 → 14 → 5 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 2 + 6 + 1 + 6 + 7 + 1 + 4 + 3 + 4 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1316877327.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Nurse Practitioner (Adult Health)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Nurse Practitioner (Adult Health)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Psychiatry & Neurology (Hospice and Palliative Medicine)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker (Clinical)
220 E 42ND ST FL 6, 6TH FLOOR
NEW YORK, NY 10017
Counselor (Mental Health)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Counselor (Mental Health)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Registered Nurse (Psychiatric/Mental Health, Adult)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Counselor (Mental Health)
220 E 42ND ST FL 6
NEW YORK, NY 10017
Social Worker
220 E 42ND ST FL 6
NEW YORK, NY 10017

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1316877327, enumerated as an "individual" on May 21, 2026.

The provider is located at 220 E 42ND ST FL 6 NEW YORK, NY 10017 and the phone number is (917) 613-5299.

Registered Nurse with taxonomy code 163WP0809X and a focus in Psychiatric/Mental Health, Adult.