Michael Swiernik, MD
NPI 1821018920 · Internal Medicine Physician · Los Angeles, CA
Michael Swiernik, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1821018920).
Provider details
- NPI number
- 1821018920
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A72738 (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
- 2006-07-20
- Last updated
- 2010-07-22
Frequently asked questions
- What is Michael Swiernik's NPI number?
- Michael Swiernik's National Provider Identifier (NPI) is 1821018920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Swiernik's specialty?
- Michael Swiernik is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Swiernik located?
- Michael Swiernik's practice location on file with NPPES is 200 Medical Plaza, Los Angeles, CA 90095-3075.
- What is Michael Swiernik's phone number?
- The practice phone number listed in the NPPES registry for Michael Swiernik is (310) 206-6232.
- Is Michael Swiernik's NPI active?
- Yes — Michael Swiernik's NPI (1821018920) is active in the NPPES registry as of the last update on 2010-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.