Dr. Glen Robert Mark, D.C.
Dr. Glen Robert Mark is a Chiropractor provider (Chiropractor) practicing in Riverhead, NY, registered in the NPPES registry with NPI 1669415238 since 2006. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1669415238 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Glen Robert Mark |
| Credential | D.C. |
| Sex | Male |
| Practice address | 633 ROANOKE AVE, Riverhead, NY, 11901 |
| Phone | 6317273795 |
| Fax | 6317271961 |
| Enumeration date | 2006-06-13 |
| Last updated in NPPES | 2020-03-10 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | XOO7337-1 | NY |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| CO-7337-1 | Other | NY | WORKERS COMPENSATION |
Copy-ready billing details
Provider: Glen Mark, D.C. NPI: 1669415238 Taxonomy: 111N00000X (Chiropractor) Address: 633 ROANOKE AVE, Riverhead, NY, 11901
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1942248489 | Hallmark Chiropractic | Organization | Chiropractor | Riverhead, NY |
| 1225398860 | Nancy Mark | Individual | Chiropractor | Riverhead, NY |
| 1407261811 | North Fork Neuropsychology | Organization | Mental Health Clinic/Center (Including Community Mental Health Center) | Riverhead, NY |
Verify this record
Cross-check NPI 1669415238 against the authoritative CMS record: view Dr. Glen Robert Mark 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
How do I verify Glen Mark's NPI record?
Is NPI 1669415238 active?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-03-10.