Kathy Sietsema, M.D.
NPI 1053322032 · Pulmonary Disease Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathy Sietsema, M.D. is a Pulmonary Disease Physician provider in Torrance, CA (NPI 1053322032).
Provider details
- NPI number
- 1053322032
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G48514 (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
- 2006-08-11
- Last updated
- 2007-07-09
Frequently asked questions
- What is Kathy Sietsema's NPI number?
- Kathy Sietsema's National Provider Identifier (NPI) is 1053322032, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathy Sietsema's specialty?
- Kathy Sietsema is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Kathy Sietsema located?
- Kathy Sietsema's practice location on file with NPPES is 21840 Normandie Ave, Torrance, CA 90502-2047.
- What is Kathy Sietsema's phone number?
- The practice phone number listed in the NPPES registry for Kathy Sietsema is (310) 222-5101.
- Does Kathy Sietsema accept Medicare?
- Kathy Sietsema is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathy Sietsema's NPI active?
- Yes — Kathy Sietsema's NPI (1053322032) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.