Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Dynan, PT, DPT, OCS
Physical Therapist in Lexington, MA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255631545
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Dynan
Credential PT, DPT, OCS
Sex Male
Practice address 16 Hayden Avenue, Lahey Lexington, Lexington, MA, 02421
Phone (781) 372-7060
Fax (781) 372-7069
Enumeration date Nov 2, 2010
Last updated in NPPES Dec 18, 2012
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 11208 (MA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 110094351A | Medicaid | MA | - |
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mark Dynan?
Mark Dynan is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-18.