CITY MEDICAL OF UPPER EAST SIDE, PLLC
NPI 1124404231
Clinic/Center - Urgent Care in New York, NY
NPI Status: Active since July 31, 2015
Contact Information
1500 LEXINGTON AVENUE
NEW YORK, NY
ZIP 11556
Phone: (516) 783-4600
Fax: (516) 783-4612
NPPES record last updated: March 3, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.
Record update history: Mar 3, 2025, Sep 11, 2024, Jun 21, 2024 (3 updates tracked since 2024).
- Organization
- Clinic/Center
- Urgent Care
About CITY MEDICAL OF UPPER EAST SIDE, PLLC
This page provides the complete NPI Profile along with additional information for City Medical Of Upper East Side, Pllc, a provider established in New York, New York operating as a Clinic/center, focusing in urgent care . The healthcare provider is registered in the NPI registry with number 1124404231 assigned on July 2015. The practitioner's primary taxonomy code is 261QU0200X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is Swahili Henry (Director Of Payment Solutions)
- NPI
- 1124404231
- Provider Name
- CITY MEDICAL OF UPPER EAST SIDE, PLLC
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 1500 LEXINGTON AVENUE NEW YORK, NY 11556
- Location Phone
- (516) 783-4600
- Location Fax
- (516) 783-4612
- Mailing Address
- 1345 AVENUE OF THE AMERICAS FL 8 NEW YORK, NY 10105
- Mailing Phone
- (908) 588-3635
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- Yes
- Enumeration Date
- 07-31-2015
- Last Update Date
- 03-03-2025
- Code Navigator
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
Clinic/Center Urgent Care
- Taxonomy Code
- 261QU0200X
- Type
- Ambulatory Health Care Facilities
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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 1124404231, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 59 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1124404231, enumerated as an "organization" on July 31, 2015.
The provider is located at 1500 LEXINGTON AVENUE NEW YORK, NY 11556 and the phone number is (516) 783-4600.
Clinic/Center with taxonomy code 261QU0200X and a focus in Urgent Care.
