MRS. GRACE SUN DAUN NURSE PRACTITIONER
NPI 1699839415
Nurse Practitioner - Adult Health in San Jose, CA

NPI Status: Active since December 20, 2006

Contact Information

270 INTERNATIONAL CIR
SAN JOSE, CA
ZIP 95119
Phone: (408) 972-6527

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  • Individual
  • Female
  • Nurse Practitioner
  • Adult Health

About GRACE DAUN

This page provides the complete NPI Profile along with additional information for Grace Daun, a provider established in San Jose, California with a medical specialization in Nurse Practitioner, focusing in adult health . The healthcare provider is registered in the NPI registry with number 1699839415 assigned on December 2006. The practitioner's primary taxonomy code is 363LA2200X with license number 390394 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1699839415
Provider Name
MRS. GRACE SUN DAUN NURSE PRACTITIONER
Gender
Female
Entity Type
Individual
Location Address
270 INTERNATIONAL CIR SAN JOSE, CA 95119
Location Phone
(408) 972-6527
Mailing Address
1032 MOUNT CARMEL DR SAN JOSE, CA 95120
Mailing Phone
(408) 323-1316
Is Sole Proprietor?
No
Enumeration Date
12-20-2006
Last Update Date
09-11-2025
Code Navigator

A nurse practitioner (NP) like Grace Daun 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 Adult Health

Taxonomy Code
363LA2200X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
390394
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)
1363L00000XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner

390394 (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 1699839415, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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
9
Doubled → 18 → 1 + 8
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
5
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 9 → 18 → 9 8 → 16 → 7 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 8 + 9 + 1 + 6 + 3 + 1 + 8 + 4 + 2 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1699839415.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Physical Therapist
270 INTERNATIONAL CIR, TWO NORTH
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR, 2 NORTH
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR, PHYSICAL THERAPY DEPT.
SAN JOSE, CA 95119
Pharmacist (Oncology)
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Pharmacist (Oncology)
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Psychologist
270 INTERNATIONAL CIR, KAISER PERMANENTE HEART TRANSPLANT SERVICE
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist (Orthopedic)
270 INTERNATIONAL CIR, BUILDING TWO NORTH
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR, TWO NORTH BLDG.
SAN JOSE, CA 95119
Clinic/Center (Primary Care)
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Dietitian, Registered
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Pharmacist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR, 2 NORTH, FIRST FLOOR
SAN JOSE, CA 95119
Pharmacist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Pharmacist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119
Physical Therapist
270 INTERNATIONAL CIR
SAN JOSE, CA 95119

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1699839415, enumerated as an "individual" on December 20, 2006.

The provider is located at 270 INTERNATIONAL CIR SAN JOSE, CA 95119 and the phone number is (408) 972-6527.

Nurse Practitioner with taxonomy code 363LA2200X and a focus in Adult Health.