David Layfield, OTR
David Layfield, OTR is an Occupational Therapist in Houston, TX, registered under NPI 1871784223. This provider registers 7 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2210 SILVER SAGE DR, Houston, TX 77077. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 109789 | TX | Pediatric Occupational Therapist |
| 109789 | TX | Occupational Therapist primary |
| 109789 | TX | Low Vision Occupational Therapist |
| 109789 | TX | Feeding, Eating & Swallowing Occupational… |
| 109789 | TX | Neurorehabilitation Occupational Therapist |
| 109789 | TX | Human Factors Occupational Therapist |
| 109789 | TX | Physical Rehabilitation Occupational… |
This provider holds licence 109789 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Occupational Therapist covers
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life. NUCC Health Care Provider Taxonomy, code 225X00000X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 225XP0200X | Pediatric Occupational Therapist Pediatrics | 109789 | TX | |
| 225X00000X | Occupational Therapist | 109789 | TX | primary |
| 225XL0004X | Low Vision Occupational Therapist Low Vision | 109789 | TX | |
| 225XF0002X | Feeding, Eating & Swallowing Occupational Therapist Feeding, Eating & Swallowing | 109789 | TX | |
| 225XN1300X | Neurorehabilitation Occupational Therapist Neurorehabilitation | 109789 | TX | |
| 225XH1300X | Human Factors Occupational Therapist Human Factors | 109789 | TX | |
| 225XP0019X | Physical Rehabilitation Occupational Therapist Physical Rehabilitation | 109789 | TX |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1871784223 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 9, 2007 |
| Last updated | Jan 5, 2010 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | OTR |
| Practice address |
2210 SILVER SAGE DR Houston, TX 77077 (713) 208-1118 Fax (281) 759-0074 |
| Other identifiers |
140563101
· Medicaid (TX) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 8 | 7 | 1 | 7 | 8 | 4 | 2 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 5 | 8 | 8 | 2 | 4 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.