MRS. CYNTHIA CAROL ASHDOWN RN ANP
NPI 1255333712
Registered Nurse in Houston, TX

NPI Status: Active since August 15, 2005

Contact Information

7400 FANNIN ST
SUITE 850
HOUSTON, TX
ZIP 77054
Phone: (713) 791-1874
Fax: (713) 796-2343

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  • Individual
  • Female
  • Registered Nurse

About CYNTHIA ASHDOWN

This page provides the complete NPI Profile along with additional information for Cynthia Ashdown, a provider established in Houston, Texas with a medical specialization in Registered Nurse. The healthcare provider is registered in the NPI registry with number 1255333712 assigned on August 2005. The practitioner's primary taxonomy code is 163W00000X with license number E35588 (CT). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1255333712
Provider Name
MRS. CYNTHIA CAROL ASHDOWN RN ANP
Other Name
MISS CYNTHIA CAROL WHITE RN
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
7400 FANNIN ST SUITE 850 HOUSTON, TX 77054
Location Phone
(713) 791-1874
Location Fax
(713) 796-2343
Mailing Address
7400 FANNIN ST SUITE 850 HOUSTON, TX 77054
Mailing Phone
(713) 791-1874
Mailing Fax
(713) 796-2343
Is Sole Proprietor?
No
Enumeration Date
08-15-2005
Last Update Date
09-11-2025
Code Navigator

A registered nurse (RN) like Cynthia Ashdown 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

Taxonomy Code
163W00000X
Type
Nursing Service Providers
License No.
E35588
License State
CT
Taxonomy Description
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.

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)
1363LA2200XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner
Adult Health

520597 (TX)
2363LA2200XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner
Adult Health

ARNP9213664 (FL)

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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 1255333712, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
3
Doubled → 6
Pos 6
3
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
1
Doubled → 2
Check
2
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 5 → 10 → 1 3 → 6 3 → 6 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 6 + 3 + 6 + 7 + 2 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1255333712.

Other Providers at the Same Location


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

Internal Medicine (Endocrinology, Diabetes & Metabolism)
7400 FANNIN ST, SUITE 850
HOUSTON, TX 77054
Internal Medicine (Endocrinology, Diabetes & Metabolism)
7400 FANNIN ST, STE 850
HOUSTON, TX 77054
Nurse Practitioner
7400 FANNIN ST, STE 1050
HOUSTON, TX 77054
Genetic Counselor, MS
7400 FANNIN ST, SUITE 1200
HOUSTON, TX 77054
Internal Medicine
7400 FANNIN ST, SUITE 870
HOUSTON, TX 77054
Genetic Counselor, MS
7400 FANNIN ST, SUITE 1200
HOUSTON, TX 77054
Family Medicine
7400 FANNIN ST, SUITE 650
HOUSTON, TX 77054
Obstetrics & Gynecology
7400 FANNIN ST, STE 755
HOUSTON, TX 77054
Plastic Surgery (Surgery of the Hand)
7400 FANNIN ST, 1175
HOUSTON, TX 77054
Pediatrics
7400 FANNIN ST, SUITE 900
HOUSTON, TX 77054
Pediatrics
7400 FANNIN ST, SUITE 900
HOUSTON, TX 77054
Registered Nurse (Women's Health Care, Ambulatory)
7400 FANNIN ST, 1180
HOUSTON, TX 77054
Obstetrics & Gynecology (Reproductive Endocrinology)
7400 FANNIN ST, 1180
HOUSTON, TX 77054
Obstetrics & Gynecology
7400 FANNIN ST, SUITE 1118
HOUSTON, TX 77054
Specialist
7400 FANNIN ST, 1280
HOUSTON, TX 77054
Obstetrics & Gynecology
7400 FANNIN ST, STE 755
HOUSTON, TX 77054
Obstetrics & Gynecology
7400 FANNIN ST, SUITE 1160
HOUSTON, TX 77054
Specialist
7400 FANNIN ST, SUITE 1050
HOUSTON, TX 77054
Physician Assistant
7400 FANNIN ST, SUITE #700
HOUSTON, TX 77054
Genetic Counselor, MS
7400 FANNIN ST, SUITE 700
HOUSTON, TX 77054

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255333712, enumerated as an "individual" on August 15, 2005.

The provider is located at 7400 FANNIN ST SUITE 850 HOUSTON, TX 77054 and the phone number is (713) 791-1874.

Registered Nurse with taxonomy code 163W00000X.