William Klaustermeyer, MD
NPI 1265451165 · Allergy & Immunology (Internal Medicine) Physician · Los Angeles, CA
William Klaustermeyer, MD is a Allergy & Immunology (Internal Medicine) Physician provider in Los Angeles, CA (NPI 1265451165).
Provider details
- NPI number
- 1265451165
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C29332 (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
- 2006-07-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Klaustermeyer's NPI number?
- William Klaustermeyer's National Provider Identifier (NPI) is 1265451165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Klaustermeyer's specialty?
- William Klaustermeyer is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is William Klaustermeyer located?
- William Klaustermeyer's practice location on file with NPPES is 200 Medical Plaza, Los Angeles, CA 90095.
- What is William Klaustermeyer's phone number?
- The practice phone number listed in the NPPES registry for William Klaustermeyer is (310) 794-9718.
- Is William Klaustermeyer's NPI active?
- Yes — William Klaustermeyer's NPI (1265451165) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.