Sound Sleep LLC
NPI 1639776347 · Sleep Medicine (Internal Medicine) Physician · Haymarket, VA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sound Sleep LLC is a Sleep Medicine (Internal Medicine) Physician organization in Haymarket, VA (NPI 1639776347).
Provider details
- NPI number
- 1639776347
- Entity type
- Organization
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sharmili Mathur, Owner(301) 873-8379
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
- 2020-10-06
- Last updated
- 2020-10-06
- Certified
- 2020-10-06
Frequently asked questions
- What is Sound Sleep LLC's NPI number?
- Sound Sleep LLC's National Provider Identifier (NPI) is 1639776347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sound Sleep LLC?
- Sound Sleep LLC is classified in the NPPES registry as Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Sound Sleep LLC located?
- Sound Sleep LLC's practice location on file with NPPES is 6626 Muir Dr, Haymarket, VA 20169-2742.
- What is Sound Sleep LLC's phone number?
- The practice phone number listed in the NPPES registry for Sound Sleep LLC is (301) 873-8379.
- Does Sound Sleep LLC accept Medicare?
- Sound Sleep LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Sound Sleep LLC?
- The authorized official listed on Sound Sleep LLC's NPPES record is Sharmili Mathur, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sound Sleep LLC's NPI active?
- Yes — Sound Sleep LLC's NPI (1639776347) is active in the NPPES registry as of the last update on 2020-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.