We specialize in endocrine diseases such as:

-Uncontrolled diabetes

-Thyroid cancer

-Hyper- and Hypothyroidism

-Thyroid nodules

-Pituitary disease

-Parathyroid disease


-Adrenal diseases such as Addison's, Cushing's, and adrenal masses


-We regret due to high patient volume we are no longer able to accept NEW pediatric patients

(805) 259-1356

Due to the small number of practicing endocrinologists in the area and the large patient need, we appreciate your patience in scheduling non-urgent appointments at least 3 months in advance.  For urgent appointments, we will try to work with the referring doctor to meet their expedited needs.  All patients must have a primary care doctor.

Due to COVID-19 , all follow-up appointments will be via Telehealth unless a medical procedure, biopsy, ultrasound, or injection needs to be done in the office.  NEW patients can be seen in person for their initial visits. Masks are required.  Please keep your regular scheduled appointments and we will contact you prior to your appointment for arrangements.  You may email drwesthoff@lomavistahealth.com with any other concerns.  Stay Safe.

Contact Us

Loma Vista Endocrinology practices evidence-based medicine.  We do not prescribe homeopathic treatments, herbal therapies, or compounded hormones.  We do require a doctor's referral and medical records prior to scheduling an initial appointment.

Health Insurance

The office of Dr. Tricia Westhoff-Pankratz with certified nurse practitioner Barbara Holdsworth, FNP-c

Appointment Request

We accept Medicare and almost all commercial PPO and HMO insurance plans. HMO plans do require authorization prior to scheduling an initial appointment per HMO requirements. We regret we are not currently contracted with Medi-Cal plans.

Specialists in endocrine disorders and diabetes​

Loma Vista Endocrinology

2629 Loma Vista Road, Ventura, CA, 93003

Ph (805) 259-1356

Fax (805) 643-0720


​​Loma Vista Endocrinology