Majormedical LLC Portable Diagnostics
NPI 1639497308 · Family Medicine Physician · Silver Spring, MD
Majormedical LLC Portable Diagnostics is a Family Medicine Physician organization in Silver Spring, MD (NPI 1639497308).
Provider details
- NPI number
- 1639497308
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Major, Owner/Ceo(301) 585-1833
- License
- D0064592 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
Mailing address
Registry dates
- Enumerated
- 2010-05-05
- Last updated
- 2010-05-05
Frequently asked questions
- What is Majormedical LLC Portable Diagnostics's NPI number?
- Majormedical LLC Portable Diagnostics's National Provider Identifier (NPI) is 1639497308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Majormedical LLC Portable Diagnostics?
- Majormedical LLC Portable Diagnostics is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Majormedical LLC Portable Diagnostics located?
- Majormedical LLC Portable Diagnostics's practice location on file with NPPES is 8241 Georgia Ave, Silver Spring, MD 20910-4510.
- What is Majormedical LLC Portable Diagnostics's phone number?
- The practice phone number listed in the NPPES registry for Majormedical LLC Portable Diagnostics is (301) 585-1833.
- Who is the authorized official for Majormedical LLC Portable Diagnostics?
- The authorized official listed on Majormedical LLC Portable Diagnostics's NPPES record is Mark Major, Owner/Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Majormedical LLC Portable Diagnostics's NPI active?
- Yes — Majormedical LLC Portable Diagnostics's NPI (1639497308) is active in the NPPES registry as of the last update on 2010-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.