LIBERTI-KRISHNAN, PLLC
NPI 1619709656
Nurse Practitioner - Psychiatric/Mental Health in Chicago, IL

NPI Status: Active since August 19, 2024

Contact Information

213 W INSTITUTE PL STE 500
CHICAGO, IL
ZIP 60610
Phone: (312) 736-2865
Fax: (630) 761-7549

NPI Profile Information
Primary Taxonomy
Group Taxonomy
Authorized Official
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Organization
Nurse Practitioner
Psychiatric/Mental Health

About LIBERTI-KRISHNAN, PLLC

This page provides the complete NPI Profile along with additional information for Liberti-krishnan, Pllc, a provider established in Chicago, Illinois operating as a Nurse Practitioner, focusing in psychiatric/mental health . The healthcare provider is registered in the NPI registry with number 1619709656 assigned on August 2024. The practitioner's primary taxonomy code is 363LP0808X. The provider is registered as an organization and their NPI record was last updated March 2026. Liberti-krishnan, Pllc operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Diana C Krishnan Aprn, Pmhnp (Psychiatric Nurse Practitioner)

NPI: 1619709656
Provider Name: LIBERTI-KRISHNAN, PLLC
Entity Type: Organization
Location Address: 213 W INSTITUTE PL STE 500 CHICAGO, IL 60610
Location Phone: (312) 736-2865
Location Fax: (630) 761-7549
Mailing Address: 213 W INSTITUTE PL STE 500 CHICAGO, IL 60610
Mailing Phone: (312) 736-2865
Mailing Fax: (630) 761-7549
Is Sole Proprietor?: No
Is Organization Subpart?: No
Enumeration Date: 08-19-2024
Last Update Date: 03-30-2026
Code Navigator

A nurse practitioner (NP) like Liberti-krishnan, Pllc is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.

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: Nurse Practitioner Psychiatric/Mental Health
Taxonomy Code: 363LP0808X
Type: Physician Assistants & Advanced Practice Nursing Providers

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.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name: DIANA C KRISHNAN APRN, PMHNP
Authorized Official Title: PSYCHIATRIC NURSE PRACTITIONER
Authorized Official Phone: (312) 736-2865

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 1619709656, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 1 → 2 7 → 14 → 5 9 → 18 → 9 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 2 + 9 + 1 + 4 + 0 + 1 + 8 + 6 + 1 + 0 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6

This NPI is valid

The calculated check digit is 6, which matches the last digit of 1619709656.