Dr. Mark Allen Dennis, D.C.
Dr. Mark Allen Dennis is a Chiropractor provider (Chiropractor) practicing in Pasadena, TX, registered in the NPPES registry with NPI 1821315656 since 2010. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821315656 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Allen Dennis |
| Credential | D.C. |
| Sex | Male |
| Practice address | 4500 E SAM HOUSTON PKWY S, STE 115, Pasadena, TX, 77505 |
| Phone | 2819913002 |
| Fax | 2819913022 |
| Enumeration date | 2010-05-04 |
| Last updated in NPPES | 2011-06-22 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | 11418 | TX |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: Mark Dennis, D.C. NPI: 1821315656 Taxonomy: 111N00000X (Chiropractor) Address: 4500 E SAM HOUSTON PKWY S, STE 115, Pasadena, TX, 77505
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1063528602 | Eric Rothenberg | Individual | Plastic Surgery Physician | Pasadena, TX |
| 1346352630 | A. Shows | Individual | Hand Occupational Therapist | Pasadena, TX |
| 1720222854 | Patients Rehabilitation Center LLC | Organization | Physical Therapist | Pasadena, TX |
| 1669793600 | Brandon Heidaker | Individual | Physical Therapist | Pasadena, TX |
| 1659674604 | Eric S Rothenberg MD PA | Organization | Specialist | Pasadena, TX |
| 1225382633 | East Houston Orthopedics & Sports Medicine PA | Organization | Orthopaedic Surgery Physician | Pasadena, TX |
| 1851635049 | Phillip Williams | Individual | Physical Therapist | Pasadena, TX |
| 1740620863 | Lori Thompson | Individual | Hand Occupational Therapist | Pasadena, TX |
Verify this record
Cross-check NPI 1821315656 against the authoritative CMS record: view Dr. Mark Allen Dennis on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-06-22.