William Loos, MD
NPI 1225105034 · Neuromusculoskeletal Medicine & OMM Physician · Los Angeles, CA
William Loos, MD is a Neuromusculoskeletal Medicine & OMM Physician provider in Los Angeles, CA (NPI 1225105034).
Provider details
- NPI number
- 1225105034
- Entity type
- Individual
- Primary specialty
- Neuromusculoskeletal Medicine & OMM PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C38444 (CA)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2008-09-23
Frequently asked questions
- What is William Loos's NPI number?
- William Loos's National Provider Identifier (NPI) is 1225105034, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Loos's specialty?
- William Loos is listed in the NPPES registry with a primary specialty of Neuromusculoskeletal Medicine & OMM Physician (Allopathic & Osteopathic Physicians).
- Where is William Loos located?
- William Loos's practice location on file with NPPES is 4733 W Sunset Blvd, Los Angeles, CA 90027-6021.
- What is William Loos's phone number?
- The practice phone number listed in the NPPES registry for William Loos is (323) 783-4011.
- Is William Loos's NPI active?
- Yes — William Loos's NPI (1225105034) is active in the NPPES registry as of the last update on 2008-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.