Ob-Gyn Associates of Chico is a group of three physicians. Dr. Steven Lazaro first started practicing in Chico in 1980. A year later he was joined by Dr. Susan Kehm. In 1984, Dr. Walter Mazen, Jr. became the third member of the group. We are graduates of American medical schools, and have received our post-graduate specialty training in a likewise fashion. We are all certified by the American Board of Obstetrics and Gynecology. We each run our own practices independently, seeing our own gynecology and obstetrical patients. Since we share call coverage on nights and weekends, our pregnant patients will usually see the other physicians for one or two "get acquainted" visits. We have been sharing the same office space since 1984, and are conveniently located one block from Enloe Medical Center on The Esplanade.

On Call Coverage
A physician will be on call 24 hours a day, every day of the year, including holidays. The call duty is distributed equally among the three physicians, with a fourth physician outside of our group covering for us one weekend per month. Since each of us is primarily responsible for our own obstetrical patients, we will be available for deliveries of our patients during office hours as well as when we are on call. On call services are for emergencies and obstetrical management. For routine concerns such as prescriptions, refills of prescriptions, appointments, and small questions, please try to call during office hours (Mon.-Thurs. 9 a.m. to 5 p.m., Fri. 9a.m. to 2p.m.). For important after hour problems that cannot wait until the next day please call the office number at (530) 895-0423 and the answering service will page the physician on call. This may take a few minutes. If there is a true emergency, please call 911 and/or get to the closest hospital emergency room as soon as possible. The phone number for Enloe Hospitals' Labor and Delivery unit is (530) 332-7313. They can be notified if you are going to the hospital.


Our Hospital
N. T. Enloe Memorial Hospital is a non-profit community hospital that serves the medical needs of Chico and the surrounding area. It was established by Dr. Enloe in 1913, with the original building located in downtown Chico. It moved to its present location on The Esplanade in 1937. Since then, the facility has undergone a series of expansions through the 1990's. In its goal to provide state of the art quality care for the community, it is currently preparing to embark on a major transition. The Enloe Century Project is a master plan to expand the main campus in a manner that will accommodate anticipated needs for at least the next 50 years. Starting this year, work will begin on a new tower adjacent to the existing tower. There will be new patient services, rooms, and facilities that will include a new surgical suite and new facilities for women's health care. The fourth floor will be devoted to a state of the art birthing center and mother-baby postpartum unit. We have a Level II nursery that allows us to care for our preterm high risk patients starting at 32 weeks without having to transport these mothers to Sacramento. Pediatrics will be adjacent to this unit. Although the population of Chico is approximately 80,000, the drawing area for our facility is actually 450,000. This is due to the high level of sophistication of the medical and surgical specialties and sub specialties represented in our medical community. Enloe is a state designated trauma center and supports an air ambulance helicopter service. In addition to the services provided at the main campus, the hospital has two emergency walk-in facilities (Prompt Care), a Cancer Center, a Children's Center, a Breast Care Center, an in-patient behavioral health unit, a rehabilitation hospital, an outpatient surgery center, and a medical office building.