Accepting New Patients
Offers Video Visits
Medical Group Provider

Theresa Mortensen, MSN, NP

4.9 out of 5 (109 Ratings)
  • Hematology
    (Board Certified)
  • Hematology Oncology
    (Board Certified)
  • Medical Oncology
    (Board Certified)
Primary Address | Office Details
Providence Medical Group Santa Rosa - Cancer Center
3555 Round Barn Circle
Suite A

Santa Rosa, CA 95403

Phone: (707) 528-1050

Fax: (707) 525-3874

Secondary Address | Office Details
Providence Medical Group Petaluma - Cancer Center

110 Lynch Creek Way

Suite A

Petaluma, CA 94954

Phone: (707) 763-0600

Fax: (707) 765-1757

Medical Groups & Affiliations
  • Providence Medical Group Sonoma
  • Providence Medical Network
Get Connected
to Your Provider
(707) 528-1050
  • Make you feel like a human. Treated with empathy and respect.
    Everything started quickly and efficiently for months of treatment ahead with compassionate and helpful information
    Theresa was well-prepared and articulate. She did a good job.
    I feel I've been getting excellent care!
    I felt she listened to me. She gave advice to my questions and concerns.
    41 Total Comments Page 1 2 3 4 5 6 7 8 9   Next
  • Meet The Provider

    Theresa has been providing quality care as a Nurse Practitioner to oncology/nematology patients in the in-patient and outpatient environment for more than 30 years.

    She implemented the hereditary cancer syndrome program, which provides assessment and counseling services for high-risk individuals and their family members. Prior to her tenure as a NP, Theresa attended patients as staff nurse for Redwood Regional Medical Group from 1996 to 2002 and is now part of St. Joseph Health Medical Group, providing clinical expertise and training with the majority of her focus on solid tumors (example breast, lung, colon etc), as well as lymphomas, CML, MDS, and CLL. She is also specialty trained to perform bone marrow biopsies.

    Teresa loves to educate patients, families, and colleagues - when she is not seeing them in clinic, she gives educational talks on cancer genetics, metastatic colon cancer, CML, MDS, and breast cancer. Theresa is an extremly caring Nurse Practitioner and takes pride in caring for the oncology patient and their family in the outpatient setting, including the administration of chemotherapeutic agents and support measures as needed.

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    Primary Specialties
    Primary Specialties
    • Hematology
      (Board Certified)
    • Hematology Oncology
      (Board Certified)
    • Medical Oncology
      (Board Certified)
    Other Specialties Associations
    Board Certifications

    American Nurses Credentialing Center, Nurse Practitioner

    American Nurses Credentialing Center (ANCC), Family Nurse Practitioner

    Education & Training
    • Medical School
      Sonoma State University - 2002
  • Insurance Accepted

    Insurance Accepted

    • Insurance Plan

    • Aetna Medicare Advantage PPO
    • Aetna PPO
    • Anthem Blue Cross HMO
    • Anthem Blue Cross Medicare PPO
    • Anthem Blue Cross PPO
    • Blue Shield of CA HMO
    • Blue Shield of CA PPO
    • Choice /Humana PPO
    • Cigna HMO
    • Cigna PPO
    • Coventry/First Health PPO
    • Health Net - TriCare
    • Health Net HMO
    • Health Net Medicare Advantage
    • Health Net PPO
    • HealthSmart (Interplan) PPO
    • Multiplan PPO
    • Partnership Health Plan of California
    • United Healthcare HMO
    • United Healthcare Medicare Advantage
    • United HealthCare PPO
    • US Family Health Plan - TriCare
    • Western Health Advantage HMO
    • Western Health Advantage Medicare

Providence Medical Group Santa Rosa - Cancer Center

  • Address
    3555 Round Barn Circle, Suite A,
    Santa Rosa, CA 95403
    Get Directions
  • Phone
    (707) 528-1050
    (707) 525-3874
  • Hours of Operation
    Mon - Fri
  • Secondary Location

Providence Medical Group Petaluma - Cancer Center