Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Twellman, D.P.T.
Physical Therapist in Merriam, KS · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1245518117
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Twellman
Credential D.P.T.
Sex Male
Practice address 10000 W 75th St, Suite 250, Merriam, KS, 66204
Phone (913) 894-1910
Enumeration date Jul 26, 2011
Last updated in NPPES Jul 26, 2011
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 11-04283 (KS) Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession.
About the DPT credential
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.
Frequently asked questions
Where does Mark Twellman practice?
The practice location on file with NPPES is in Merriam, KS. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Twellman?
The National Provider Identifier (NPI) for Mark Twellman is 1245518117, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Therese Mckechnie Clinical Social Worker · Shawnee Mission, KS NPI 1255327581 Julie Elkinton Physical Therapist · Merriam, KS NPI 1033128319 E Cooper Physical Therapist · Shawnee Mission, KS NPI 1336249507 Patricia Burrell Occupational Therapist · Shawnee Mission, KS NPI 1043370646 Vicki Sparks Specialist · Merriam, KS NPI 1023178613 Stephanie Liebling Clinical Social Worker · Shawnee Mission, KS NPI 1285759894 Andrea Wattree Physical Therapist · Shawnee Mission, KS NPI 1932228384 Ginger Snawerdt Speech-Language Pathologist · Shawnee Mission, KS NPI 1851581607
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-26.