L. Mark Gross, DDS, PA
L. Mark Gross, DDS, PA is a healthcare organization registered as General Practice Dentistry in Chevy Chase, MD, holding Type 2 (organization) NPI 1326129255 since 2006. The authorized official on file is Louis Gross, President Dentist.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1326129255 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | L. Mark Gross, DDS, PA |
| Other name | <Unavail> |
| Practice address | 4702 CHEVY CHASE DR, Chevy Chase, MD, 20815 |
| Phone | 3019868804 |
| Fax | 3012295751 |
| Enumeration date | 2006-10-18 |
| Last updated in NPPES | 2020-08-22 |
Authorized official
| Name | Louis Gross |
|---|---|
| Title | President Dentist |
| Phone | 3019868804 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1223G0001X | General Practice Dentistry | Primary | 5552 | MD |
Copy-ready billing details
Provider: L. Mark Gross, DDS, PA NPI: 1326129255 Taxonomy: 1223G0001X (General Practice Dentistry) Address: 4702 CHEVY CHASE DR, Chevy Chase, MD, 20815
Verify this record
Cross-check NPI 1326129255 against the authoritative CMS record: view L. Mark Gross, DDS, PA 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 2020-08-22.