MRS. TAMMI H MAYFIELD OT
NPI 1699047613
Occupational Therapist - Hand in Grapevine, TX

NPI Status: Active since February 07, 2012

Contact Information

2535 IRA E WOODS AVE
GRAPEVINE, TX
ZIP 76051
Phone: (817) 481-2121
Fax: (817) 488-4493

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Secondary Locations
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Occupational Therapist
Hand

About TAMMI MAYFIELD

This page provides the complete NPI Profile along with additional information for Tammi Mayfield, a provider established in Grapevine, Texas with a medical specialization in Occupational Therapist, focusing in hand . The healthcare provider is registered in the NPI registry with number 1699047613 assigned on February 2012. The practitioner's primary taxonomy code is 225XH1200X. The provider is registered as an individual and her NPI record was last updated 8 years ago.

NPI: 1699047613
Provider Name: MRS. TAMMI H MAYFIELD OT
Other Name: TAMMI SUE HILL
Other Name Type: Former Name (1)
Gender: Female
Entity Type: Individual
Location Address: 2535 IRA E WOODS AVE GRAPEVINE, TX 76051
Location Phone: (817) 481-2121
Location Fax: (817) 488-4493
Mailing Address: 2701 N GRAPEVINE MILLS BLVD APT 2212 GRAPEVINE, TX 76051
Mailing Phone: (616) 836-8688
Is Sole Proprietor?: Yes
Enumeration Date: 02-07-2012
Last Update Date: 07-19-2018
Code Navigator

Location Map

Secondary Locations

2920 Stemmons Fwy
Dallas, TX 75247
(214) 467-8210

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: Occupational Therapist Hand
Taxonomy Code: 225XH1200X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers

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)
1	172V00000X	Other Service Providers	Community Health Worker	101867 (TX)

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 1699047613, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 2

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 9 → 18 → 9 0 → 0 7 → 14 → 5 1 → 2