Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Stefan Sien, DO

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1932319464

Dr. Stefan Sien, DO is a Pulmonary Disease in Murrieta, California. Qualified in 2005, 21 years ago. Practices with Inspire Pulmonary and Sleep Medicine Specialist, a 4-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
21
Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

28078 Baxter Rd Ste 324
Murrieta, CA 92563-1404
Phone: (951) 566-5646
Fax: (951) 566-5670
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 20A12378 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 20A12378 (CA)

Record details

NPI number1932319464
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 23, 2007
Last updated in NPPESJune 9, 2021
Certification dateMay 25, 2021
Mailing address28078 Baxter Rd Ste 324, Murrieta, CA 92563-1404

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Inspire Pulmonary And Sleep Medicine Specialist — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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