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

Dr. Irena Marie Grauzinis, DO

Individual provider Family Medicine Physician · NPI 1487303210

Dr. Irena Marie Grauzinis, DO is a Family Practice in Winters, California. Graduated from Arizona College of Osteopathic Medicine Mid Western University in 2022, 4 years ago. Practices with Sutter Valley Medical Foundation, a 2,464-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
4
Trained at
Arizona College of Osteopathic Medicine Mid Western University
Licensed in
CA
In the registry since
2022
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

111 Main St Ste B
Winters, CA 95694-1930
Phone: (530) 795-4591
Fax: (530) 795-0315
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A21650 (CA)

Record details

NPI number1487303210
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 21, 2022
Last updated in NPPESOctober 10, 2025
Certification dateOctober 10, 2025

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolARIZONA COLLEGE OF OSTEOPATHIC MEDICINE MID WESTERN UNIVERSITY
Graduated 2022 (4 years in practice)
Group practice Sutter Valley Medical Foundation — 2464 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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