OrganizationActive
L. Mark Gross, DDS, PA
NPI 1326129255 · General Practice Dentistry · Chevy Chase, MD
L. Mark Gross, DDS, PA is a General Practice Dentistry organization in Chevy Chase, MD (NPI 1326129255).
Provider details
- NPI number
- 1326129255
- Entity type
- Organization
- Primary specialty
- General Practice DentistryDental Providers
- Organization subpart
- No
- Authorized official
- Louis Gross, President Dentist(301) 986-8804
- License
- 5552 (MD)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
4702 Chevy Chase Dr
Chevy Chase, MD 20815-6433
Phone: (301) 986-8804
Fax: (301) 229-5751
Street-level locationGet directions
Mailing address
4702 Chevy Chase Dr
Chevy Chase, MD 20815-6433
Other names (DBA / former)
- Doing business as
- L. Mark Gross, DDS, PA
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2020-08-22
Frequently asked questions
- What is L. Mark Gross, DDS, PA's NPI number?
- L. Mark Gross, DDS, PA's National Provider Identifier (NPI) is 1326129255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is L. Mark Gross, DDS, PA?
- L. Mark Gross, DDS, PA is classified in the NPPES registry as General Practice Dentistry (Dental Providers).
- Where is L. Mark Gross, DDS, PA located?
- L. Mark Gross, DDS, PA's practice location on file with NPPES is 4702 Chevy Chase Dr, Chevy Chase, MD 20815-6433.
- What is L. Mark Gross, DDS, PA's phone number?
- The practice phone number listed in the NPPES registry for L. Mark Gross, DDS, PA is (301) 986-8804.
- Who is the authorized official for L. Mark Gross, DDS, PA?
- The authorized official listed on L. Mark Gross, DDS, PA's NPPES record is Louis Gross, President Dentist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is L. Mark Gross, DDS, PA's NPI active?
- Yes — L. Mark Gross, DDS, PA's NPI (1326129255) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.