
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Johnston, Family Medicine Specialist in Merced, CA?
Dr. Timothy Johnston, MD is a Family Medicine Specialist, who primarily practices in Merced, CA. Dr. Johnston graduated from University of New Mexico School of Medicine and completed his residency at Sutter/Merced Comm Med Ctr, Family Practice. Dr. Johnston is fluent in English and Spanish, and is currently seeing new patients. Dr. Johnston’s practice accepts Kaiser Permanente, Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Johnston’s office at (209) 349-8459.
Where did Dr. Johnston go to medical school and complete their residency?
Residency: Sutter/Merced Comm Med Ctr, Family Practice | Mercy Medical Center (Merced) Program
Medical School: University of Nm Sch of Med, Albuquerque Nm | University of New Mexico School of Medicine
What languages does Dr. Johnston speak?
Dr. Johnston and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Family Medicine Specialist like Dr. Johnston typically treat?
As a Family Medicine Specialist, Dr. Johnston diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Johnston. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- General Disorder Screening
- Health Screening
- General Health Check
- Disease Screening
- Medical Disorder Screening
ICD-10 Codes:
- Z1389: Encounter for screening for other disorder
Also known as:
- Third Trimester Prenatal Care
- Second Trimester Prenatal Care
- Prenatal Care
- Late Pregnancy Check-ups
- Routine Third Trimester Care
- Maternity Care (Third Trimester)
- Mid-Pregnancy Check-ups
- Routine Second Trimester Care
- Maternity Care (Second Trimester)
ICD-10 Codes:
- Z3483: Encounter for supervision of other normal pregnancy, third trimester
- Z3482: Encounter for supervision of other normal pregnancy, second trimester
Also known as:
- Routine Child Health Examination (Normal Findings)
- Health Checkup
- Normal Well-Child Checkup
- Child Physical Exam (No Issues)
- Routine Pediatric Exam (Clear)
ICD-10 Codes:
- Z00129: Encounter for routine child health examination without abnormal findings
Also known as:
- Immunization Visit
- Vaccines
- Vaccination appointment
- Shot visit
- Immunization encounter
ICD-10 Codes:
- Z23: Encounter for immunization
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Type 2 Diabetes
- Diabetes Type 2
- Type 2 diabetes
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
ICD-10 Codes:
- E119: Type 2 diabetes mellitus without complications
What procedures does a Family Medicine Specialist like Dr. Johnston typically perform?
As a Family Medicine Specialist, Dr. Johnston performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Johnston. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Fetal Non-Stress Test
- Nonstress Test
- Nonstress Test (NST)
- Fetal Heart Rate Monitoring
- NST for Pregnancy
- Baby Heartbeat Test
CPT Codes:
- 59025: Fetal non-stress test
Also known as:
- Comprehensive Prenatal Care (7+ Visits)
- Prenatal Care
- Antepartum Care
- Pregnancy Check-ups
- Maternity Care
- Obstetric Visits
CPT Codes:
- 59426: Antepartum care only; 7 or more visits
Also known as:
- Prenatal Care Visits (4-6)
- Prenatal Care
- Antepartum visits
- Pregnancy check-ups
- Maternity care appointments
CPT Codes:
- 59425: Antepartum care only; 4-6 visits
Also known as:
- Drug Delivery Implant Insertion
- Medication Implant Placement
- Bioresorbable Drug Implant
- Contraceptive Implant Insertion
CPT Codes:
- 11981: Insertion, drug-delivery implant (ie, bioresorbable, biodegradable, non-biodegradable)
Also known as:
- Impacted Ear Wax Removal (One Ear)
- Cerumen Impaction Removal
- Ear Wax Extraction with Tools
- Professional Ear Cleaning
CPT Codes:
- 69210: Removal impacted cerumen requiring instrumentation, unilateral
Also known as:
- IUD Insertion
- Birth Control
- Intrauterine device placement
- IUD placement
- Birth control implant
CPT Codes:
- 58300: Insertion of intrauterine device (IUD)
Does Dr. Johnston accept my insurance?
Dr. Johnston accepts most major insurance plans. Important: Please call our office at (209) 349-8459 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Johnston accept in Merced, CA?
Dr. Johnston in Merced, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Healthcare
AllCare Health
Blue Shield of California
Centene Corporation
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Kaiser Permanente
Medicare
Santa Cruz County
UnitedHealth Group
View All Insurances
Where is Dr. Johnston's office located?
What hospitals are Dr. Johnston affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Johnston has admitting privileges at the following hospitals:
Emanuel Medical Center - Turlock, Ca,Turlock, CA
Ranked ObGyn Surgery

Ranked C-section surgery

Ranked ObGyn Surgery
Ranked C-section surgery
Stanford Health Care - Stanford Hospital,Stanford, CA
Ranked in 6 Procedures

Ranked in 6 Procedures
Community Regional Medical Center - Fresno,Fresno, CA
Ranked Coronary Artery Bypass Graft Surgery (CABG)

Ranked Coronary Artery Bypass Graft Surgery (CABG)
California Pacific Medical Center - Van Ness Campus,San Francisco, CA
Ranked in 2 Specialties

Ranked in 5 Procedures

Ranked in 2 Specialties
Ranked in 5 Procedures
Ucsf Medical Center At Parnassus,San Francisco, CA
Ranked in 2 Procedures

Ranked in 2 Procedures
Valley Presbyterian Hospital,Van Nuys, CA
Ranked in 2 Specialties

Ranked in 3 Procedures

Ranked in 2 Specialties
Ranked in 3 Procedures
Ratings & Reviews
5.0
Overall rating
Based on 1 review
Office Experience
100% of patients found the doctor and staff friendly and the office clean and modern
Attentiveness
100% of patients felt that their time spent with the doctor was meaningful and impactful and that any follow ups were addressed quickly
Wait Times
80% of patients were satisfied with the wait time
Appointment Booking
100% of patients found it easy to book an appointment
Patients give Dr. Timothy Johnston an Excellent overall experience rating of 5 out of 5 stars. Dr. Johnston has been rated and reviewed by 1 patient. These ratings are based on a variety of factors, including the amount of time patients spent with Dr. Johnston, his bedside manner, appointment waiting time, friendliness of the office staff, clarity of diagnosis, and more.
Read Patient Reviews