Summary

Dr. Jonathan Hemphill specializes in cardiovascular disease and interventional cardiology, focusing on advanced heart care for his patients. He earned his medical degree from St. George University and completed his residency at the University of New Mexico. Dr. Hemphill holds board certification in internal medicine from the American Board of Internal Medicine and speaks English.

Dr. Hemphill practices at Mercy San Juan Medical Center with locations throughout California, including Grass Valley, Sacramento, Folsom, and Carmichael. He treats patients with high blood pressure conditions, including emergency situations requiring immediate care. His expertise includes performing heart monitoring tests such as EKGs and specialized heart imaging procedures like contrast echocardiography. Patients consistently rate Dr. Hemphill highly, giving him an average rating of 5.0 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 5
  • 40 insurance plans accepted
  • speaks English
  • University of New Mexico
  • 28 written reviews
  • 1 award
  • 2 specialties
  • 17 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 5 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Awards

  • Vitals Preferred Provider

    • Vitals Preferred Provider Award
      • Preferred Provider badge recognizes providers that are committed to transparency, responsiveness and great service to patients, and have earned a high patient satisfaction rating.

  • Click for our Methodology

Office Locations

Jonathan A. Hemphill has 5 locations

Cardiology - Dignity Health Medical Group - Grass Valley, CA

150 Catherine Ln Suite D, F & JGrass Valley, CA 95945

Mercy Medical Plaza - Sacramento, CA (North Lobby)

3941 J StSacramento, CA 95819
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Mercy Medical Plaza - Sacramento, CA (South Lobby)

3939 J StSacramento, CA 95819
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Specialty Care - Mercy Physicians Plaza - San Juan, Carmichael, CA

6555 Coyle AveCarmichael, CA 95608
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Compare with Similar Doctors

Jonathan A. Hemphill, MD
Dr. Raghav Sharma, MD
Dr. Daniel Edwin Rieders, MD
Dr. Naveen Srampical Manohar, MD
Jonathan A. Hemphill, MDDr. Raghav Sharma, MDDr. Daniel Edwin Rieders, MDDr. Naveen Srampical Manohar, MD
Cardiovascular DiseaseCardiovascular DiseaseCardiovascular DiseaseCardiovascular Disease
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.5 
4.5 
16 Years of Experience 46 Years of Experience 33 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English, Hindi Speaks English, Spanish Speaks English
Grass Valley , CAWinter Park , FLPLEASANTON , CASacramento , CA
Med School: St. George University Med School: New York Medical College Med School: Keck School Of Medicine Of The University Of Southern California Med School: Jawaharlal Inst Of Post-Graduate Medical Education And Research (Jipmer)
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Jonathan A. Hemphill

  • AARP
  • Aetna
  • Aetna - HMO
  • Alignment Health Plan
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Oklahoma
  • Blue Cross Blue Shield of Tennessee
  • Blue Cross Blue Shield of Texas
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • Brand New Day
  • CenCal Health
  • Cigna
  • Golden State Medicare Health Plan
  • Golden State Medicare Health Plan - Medicare
  • Health Net
  • Health Net - HMO
  • Health Plan of San Joaquin
  • Humana
  • Imperial Health Plan of California
  • Kaiser Permanente
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Mercy Care
  • Molina Healthcare
  • Partnership HealthPlan of California
  • State Farm
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - Medicare (Advantage HMO)
  • Western Health Advantage
  • Western Health Advantage - HMO

Medical Specialties

Jonathan A. Hemphill has the following 2 specialties

Specialty Expertise

Jonathan A. Hemphill has the following 17 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Arrhythmia
  • Atherosclerosis
  • Atrial Fibrillation
  • Blood Clot
  • Heart Attack
  • Heart Block
  • Heart Diseases
  • Heart Failure
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • High Cholesterol (Hypercholesterolemia)
  • Hypertension
  • Infertility
  • Interventional Cardiology
  • Stroke
  • Unstable Angina

Certifications, License, & Education

Jonathan A. Hemphill holds an expired medical license in the state of California. They are board certified in Internal medicine by the American Board of Internal Medicine.

Board Certifications

Board certified in Internal medicine by the American Board of Internal Medicine.

Medical License

Medical Doctor with an expired medical license in the state of California that expired in 2025.

Education & Training

Residency

Completed their residency at University of New Mexico.

Medical School

Graduated from St. George University.

NPI Number

Jonathan A. Hemphill's NPI number is 1952405326.

Similar doctors

Frequently Asked Questions

Is Jonathan Hemphill accepting new patients?
Jonathan Hemphill is accepting new patients on Vitals. View Jonathan Hemphill's profile on Vitals to make an appointment.
How can I make an appointment with Jonathan Hemphill?
You can find contact information for Jonathan Hemphill here on Vitals.
What languages does Jonathan Hemphill speak?
Jonathan Hemphill speaks English.
Where is Jonathan Hemphill's office located?
Jonathan Hemphill's office is located at 150 Catherine Ln Suite D, F & J, Grass Valley, CA, 95945.
Does Jonathan Hemphill accept virtual/telehealth appointments?
Jonathan Hemphill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.