KATHLEEN MARIE MACKESSY FNP
NPI 1669944369
Nurse Practitioner - Family in San Diego, CA

NPI Status: Active since December 19, 2018

Contact Information

6155 CORNERSTONE CT E STE 220
SAN DIEGO, CA
ZIP 92121
Phone: (858) 458-2993

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  • Individual
  • Female
  • Nurse Practitioner
  • Family

About KATHLEEN MACKESSY

This page provides the complete NPI Profile along with additional information for Kathleen Mackessy, a provider established in San Diego, California with a medical specialization in Nurse Practitioner, focusing in family . The healthcare provider is registered in the NPI registry with number 1669944369 assigned on December 2018. The practitioner's primary taxonomy code is 363LF0000X with license number NPF95010414 (CA). The provider is registered as an individual and her NPI record was last updated 7 years ago.

NPI
1669944369
Provider Name
KATHLEEN MARIE MACKESSY FNP
Gender
Female
Entity Type
Individual
Location Address
6155 CORNERSTONE CT E STE 220 SAN DIEGO, CA 92121
Location Phone
(858) 458-2993
Mailing Address
1021 MUSEUM CT OCEANSIDE, CA 92057
Mailing Phone
(760) 672-9476
Is Sole Proprietor?
No
Enumeration Date
12-19-2018
Last Update Date
11-06-2019
Code Navigator

A nurse practitioner (NP) like Kathleen Mackessy 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 Family

Taxonomy Code
363LF0000X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
NPF95010414
License State
CA

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1208M00000XAllopathic & Osteopathic Physicians

Hospitalist

NPF95010414 (CA)

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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 1669944369, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
6
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
4
Doubled → 8
Pos 8
3
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 6 → 12 → 3 9 → 18 → 9 4 → 8 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 2 + 9 + 1 + 8 + 4 + 8 + 3 + 1 + 2 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1669944369.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Nurse Practitioner
6155 CORNERSTONE CT E STE 220
SAN DIEGO, CA 92121
Nurse Practitioner (Family)
6155 CORNERSTONE CT E STE 220
SAN DIEGO, CA 92121

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1669944369, enumerated as an "individual" on December 19, 2018.

The provider is located at 6155 CORNERSTONE CT E STE 220 SAN DIEGO, CA 92121 and the phone number is (858) 458-2993.

Nurse Practitioner with taxonomy code 363LF0000X and a focus in Family.