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Edna Valley Health Center

At Edna Valley Health Center in San Luis Obispo our experienced team of Primary Care Physicians and Advanced Practice Providers offer diagnosis and treatment of common illnesses, the management of long term, acute and chronic illnesses such as diabetes, hypothyroidism and heart disease. We offer guidance on preventative care, immunization, health maintenance with patient education and screening programs. Our office has a nurturing environment but virtual visits are available on request.

Meet our Expert Team

Margaret Greenough, MD

Dr. Margaret Greenough is a Family Medicine Specialist in San Luis Obispo, CA and has over 10 years of experience in the medical field. She graduated from UCLA School of Medicine in 2010 and completed her residency at the University of Michigan in 2013. 

When not at work, Dr. Greenough enjoys traveling, cooking and spending time with her family.

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Jessica Johnson, PA

Jessica Johnson PA-C is a board-certified Physician Associate. She attended California Polytechnic State University in San Luis Obispo graduating with a bachelor’s degree in Kinesiology. She then studied for her Master’s degree at Western University of Health Sciences in Pomona, CA.  She is an affiliate member of the American Academy of Physician Associates and the California Academy of Physician Associates. She is certified in Basic Life Support and Advanced Cardiac Life Support.

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Edna Valley Health Center

Our office is right below the Stifel Management Company and across the way from the Community West Bank in the Airport Business Center. 


Musculoskeletal and connective tissue
Osteoarthritis, joint disorders, conditions of spine/back (excluding low back pain), low back pain, soft tissue disorders related to use, overuse, and pressure

Essential hypertension, coronary atherosclerosis and other chronic ischemic heart disease, heart failure, cardiac dysrhythmias

Acute respiratory infections, acute pharyngitis, allergic rhinitis, acute/chronic sinusitis, asthma, acute and chronic bronchitis

Mental, behavioral, and neurodevelopmental disorders
Depressive disorders, other mood disorders/nonpsychotic mental disorders/behavioral syndromes, attention-deficit hyperactivity disorders, opioid-related disorders

Endocrine, nutritional, and metabolic disease
Diabetes mellitus, dyslipidemia, hypothyroidism, obesity

Diseases of the eye and adnexa
Inflammation and disorders of eyelid, conjunctivitis

Skin and subcutaneous tissue
Actinic keratosis and other sun-exposure–related disorders, acne, psoriasis, seborrheic keratosis, contact dermatitis and other eczema

Urinary tract disorders including infection, disorders of menstruation and abnormal bleeding, benign prostatic hyperplasia, calculus of kidney and ureter

Diseases of digestive system
Gastroesophageal reflux disease (with esophagitis), hernias of abdominal cavity, irritable bowel syndrome, anal and rectal diseases

Malignant neoplasm of skin (non-melanoma), malignant neoplasm of breast, benign neoplasm of skin, malignant neoplasm of prostate



Common Primary Care Procedures: 

  • Allergy injections.
  • Biopsy and excision of skin lesions.
  • Flu shots and immunizations.
  • Incision and drainage of abscesses.
  • Joint injections.
  • Physical exams for sports, school and summer camp


Pacific Central Coast Health Centers contracts with most health insurance plans, including Medi-Cal, and provides health care services that fit your health plan benefits. If you have questions about the health insurance plans we accept, contact the office where you would like to be seen and our staff would be happy to answer any questions you may have.

  • Aetna
  • Blue Cross
  • Blue Shield
  • CenCal
  • Cigna
  • Coventry – First Health
  • Health Net
  • Healthsmart – Interplan
  • Medi-Cal
  • Medicare
  • Multiplan – Beech Street
  • Networks by Design
  • Tricare
  • TriWest
  • United Healthcare
  • Western Growers


What makes our Expert Team at Edna Valley Health Center stand out?

The Edna Valley Health Center is a Family Practice clinic in San Luis Obispo that is dedicated to providing quality care at every visit. We have been recognized for our continuous positive patient experience, hypertension and diabetes management for more than ten years. We have contributed to PHC’s success in reducing associated complications such as stroke and cardiac events in over 19,000 patients and poorly controlled hemoglobin A1c levels in almost 3,000 patients. The team at this health center is a mix of experienced and learning individuals, dedicated to humankindness.

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Video: Importance of a Family Physician
Dr. Margaret Greenough