​​Loma Vista Endocrinology 

Specialists in Endocrine Disorders and Diabetes​

The office of Tricia Westhoff-Pankratz, M.D. with certified nurse practitioners Barbara Holdsworth, FNP-C, BC-ADM and Marki Meyer, FNP-C

Medical practice specializing in Endocrinology in

Ventura County 2002-2025

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​​ATTENTION:​

Loma Vista Endocrinology will stop seeing patients after July 3, 2025 as Dr. Westhoff is closing her private practice in Ventura.

Starting August 5, 2025, Dr. Westhoff will be seeing patients at

Sansum Endocrinology Clinic, part of Sutter Health

215 Pesetas Lane

Santa Barbara, CA 93110

Phone (805) 681-7820

Fax (805) 681-7869

If you have an appointment AFTER July 3, 2025 at the Ventura office it has been canceled. If you wish to follow Dr. Westhoff, you can call Sansum Clinic at any time to reschedule your appt up in Santa Barbara. Telehealth is an option. Otherwise, please contact your primary care doctor for a referral to a new local Endocrinologist if appropriate.

For patients of Barbara Holdsworth and Marki Meyer:

Starting September 2025, Barbara will be seeing patients Mon, Thurs and Fridays at:
Primary Medical Group
2772 Johnson Dr. #100
Ventura, CA 93003
(805) 642-1430

At this time, Marki will not be available for general appointments as she has been offered a position working with an insulin pump company training patients on insulin pumps.

We will update the website accordingly if things change.
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TRANSFER OF RECORDS ( if transferring to a new provider only):

You will only need to transfer records if you are NOT following Dr. Westhoff or Barbara.  If you need your records transferred to another provider please contact: 

Morgan Record Management Company at
online: www.morganrecordsmanagement.com > Request My Records
Email: medical@morganrecords.com

Phone:  833-888-0061

BILLING INQUIRIES: 

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For billing questions pertaining to a date of service PRIOR to Jan 7, 2025, please contact CMH Billing Dept (805) 667-2801

For billing questions pertaining to a date of service ON OR AFTER Jan 7, 2025, please contact Athena Billing Company at:  (866) 503-3448