Mary Kay Esswein, CPNP, MSN
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- NPI Number
- 1588819098
- Provider Type
- Individual Practitioner
- Credential
- CPNP, MSN
- Primary Specialty
- Physician Assistants & Advanced Practice Nursing Providers - Pediatric Nurse Practitioner
- License Number
- 255249
- Practice Address
- 3232 Topaz Lane
- City, State ZIP
- Fullerton, CA 92831
- Phone
- (714) 579-1549
- Last Updated
- June 8, 2026
- Source
- Publicly available data
Mary Kay Esswein, CPNP, MSN is a physician assistants & advanced practice nursing providers - pediatric nurse practitioner provider located in Fullerton, CA. They offer physician assistants & advanced practice nursing providers - pediatric nurse practitioner services to patients in the Fullerton area.
As a physician assistants & advanced practice nursing providers - pediatric nurse practitioner provider in Fullerton, this clinician evaluates and treats patients for a range of common conditions seen in Fullerton and throughout CA.
The practice is located at 3232 Topaz Lane, Fullerton, CA 92831. Patients can call 7145791549 to schedule an appointment or use the directions link above to find the office from anywhere in the area.
Patients typically visit this provider for common reasons for pediatric visits include well-child checkups, vaccinations, developmental assessments, treatment of common childhood illnesses, and behavioral or school-related concerns.
If you plan to see this provider, it is a good idea to confirm that the practice accepts your insurance and is in-network before scheduling. Coverage details vary by plan, and our quote tool can help you compare options in CA.
This profile was last verified on June 8, 2026. Provider information is sourced from publicly available data and may not reflect recent changes. Please confirm details directly with the practice before scheduling.
Call for hours and appointments. Hours may vary by provider and location.
A patient’s guide to physician assistants & advanced practice nursing providers - pediatric nurse practitioner care in Fullerton, CA.
What a Physician Assistants & Advanced Practice Nursing Providers - Pediatric Nurse Practitioner provider does
Pediatric providers specialize in the health and medical care of infants, children, and adolescents. They monitor growth and development, administer vaccinations, and treat acute and chronic childhood illnesses.
Common conditions treated
Common conditions include ear infections, strep throat, RSV and other respiratory viruses, asthma, eczema, ADHD, childhood obesity, and behavioral concerns. Pediatric providers also treat minor injuries and provide developmental screenings.
Common reasons to schedule a visit
Common reasons for pediatric visits include well-child checkups, vaccinations, developmental assessments, treatment of common childhood illnesses, and behavioral or school-related concerns.
What to expect during a visit
Well-child visits track growth, milestones, and immunizations on a recommended schedule. Bring questions about feeding, sleep, behavior, or development to each appointment.
Insurance coverage considerations
Pediatric care is typically covered under family or child-only health plans, often with no-cost preventive services. Compare plans in your state to find affordable coverage for your child.
How to choose the right physician assistants & advanced practice nursing providers - pediatric nurse practitioner provider in Fullerton
Look for a pediatric provider with a child-friendly office, after-hours phone support, and same-day sick visits when possible. The right pediatrician will partner with parents and answer questions patiently through every stage of development.
Looking for in-network coverage that includes this physician assistants & advanced practice nursing providers - pediatric nurse practitioner provider? Compare health plans in CA →
Insurance acceptance not listed
The public NPI registry does not include insurance acceptance data. Contact the office directly to ask if they accept your insurance plan. You can also use our quote tool to find health plans in CA.
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Common questions about Mary Kay Esswein, CPNP, MSN in Fullerton, CA.
How do I make an appointment with Mary Kay Esswein, CPNP, MSN?
Call Mary Kay Esswein, CPNP, MSN directly at their Fullerton office to schedule a visit. You can also use the contact form on this page to send a message and the practice will respond.
Does Mary Kay Esswein, CPNP, MSN accept insurance?
Provider insurance information is not included in the public NPI registry data that powers this directory. Contact the office directly to ask whether they accept your specific insurance plan. You can also use our quote tool to find health plans in CA.
What are the office hours for Mary Kay Esswein, CPNP, MSN in Fullerton?
Office hours for Mary Kay Esswein, CPNP, MSN in Fullerton are not currently published. Call the practice directly to confirm hours before your visit.
Is parking available at Mary Kay Esswein, CPNP, MSN's Fullerton location?
Most provider offices in Fullerton offer on-site or nearby street parking. Call Mary Kay Esswein, CPNP, MSN in Fullerton ahead of time to confirm parking options and accessibility accommodations.
Does Mary Kay Esswein, CPNP, MSN offer telehealth?
Many physician assistants & advanced practice nursing providers - pediatric nurse practitioner providers in CA now offer telehealth visits for follow-ups, medication management, and routine consultations. Call Mary Kay Esswein, CPNP, MSN to ask whether a telehealth visit is appropriate for your needs.
What ages of patients does Mary Kay Esswein, CPNP, MSN see?
Pediatric providers typically see patients from newborns through age 18. Call Mary Kay Esswein, CPNP, MSN in Fullerton to confirm the age range currently accepted.
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Claim ProfileData is sourced from publicly available records. Public records do not confirm active license status, quality of care, insurance acceptance, or network participation. Please verify details directly with the provider before scheduling. Last updated June 8, 2026.