NCMA internal medicine providers are available for in-person and telehealth appointments. 

NCMA Internal Medicine

NCMA’s internal medicine physicians diagnose, treat, and manage a full spectrum of adult health conditions in Sonoma and Mendocino counties. In addition to general internal medicine services, our internists also provide expertise in:

  • acute illness care,
  • annual physicals,
  • gastroenterology,
  • endocrinology,
  • health screenings,
  • diabetes management and care,
  • immunizations and vaccines,
  • chronic illness,
  • chronic pain,
  • palliative care,
  • weight management, and
  • women’s health.


NCMA Internal Medicine and Medical Weight Loss

Jennifer Hubert, DO

830 2nd Street, Suite A
Santa Rosa, CA 95404
Phone: 707-380-1838 and 707-575-THIN (8446)
877-342-2237 fax

Request an appointment online

NCMA Internal Medicine — Petaluma

104 Lynch Creek Way, Suite 10
Petaluma, CA 94954
Fax: 707-782-9622

Request an appointment online

NCMA Internal & Family Medicine — Mendocino

Carla Stange, FNP, Jennifer Stewart, MD, & Jeffrey Berenson, MD at NCMA Internal & Family Medicine — Mendocino.

Carla Stange, FNP, Jennifer Stewart, MD, & Jeffrey Berenson, MD at NCMA Internal & Family Medicine — Mendocino.

45081 Little Lake Street
Mendocino, CA 95460
Fax: 707-937-1061

Request an appointment online

Healdsburg Internal Medicine

Rachel Mayorga, MD, Healdsburg

810 Healdsburg Avenue
Healdsburg, CA 95448
Phone: 707-385-0222
Fax: 707-629-4849

Request an appointment online

Telemedicine / virtual visits

NCMA physicians are available for telehealth virtual visits for many appointments. Learn more or request a telehealth appointment now.

Request a telehealth appointment

Insurance plans

We currently accept the following health insurance plans:

  • 6 Degrees Health
  • Aetna (Direct)
  • Anthem Blue Cross of California and Prudent Buyer Network
  • Beech Street Corporation
  • Blue Shield of California
  • Humana / Choice Care Network
  • California Foundation for Medical Care (CFMC)
  • CIGNA / Great West Healthcare
  • Coventry / First Health Network
  • Delta Health — Amy’s Kitchen
  • HealthNet
  • Healthsmart
  • Medicare
  • Meritage Medical Network
  • MultiPlan/PHCS, Inc.
  • NX Health Network
  • Provider Network of America (PNOA)
  • Railroad Medicare
  • UHC AARP Medicare Complete through Meritage
  • United Healthcare

Subject to change. Verify coverage with your provider or your insurance plan.