Question 1

What is Warren David Johnston, MD's email address?

Accepted Answer

Warren David Johnston, MD's email address is available to verified Dmand AI users. Their primary practice is located at Pavilion Surgery Center in Orange, California. Sign up for a free trial to reveal their direct contact information.

Question 2

What is Warren David Johnston, MD's phone number?

Accepted Answer

Warren David Johnston, MD's direct phone number is available to Dmand AI subscribers. To access their direct number, start a free trial.

Question 3

Where does Warren David Johnston, MD practice?

Accepted Answer

Warren David Johnston, MD is a Cardiovascular Disease Physician physician currently practicing at Pavilion Surgery Center in Orange, California. They hold admitting privileges at 1 hospital(s), including Pavilion Surgery Center. To see all the affiliations of Warren David Johnston, MD, start a free trial.

Question 4

What is Warren David Johnston, MD's specialty?

Accepted Answer

Warren David Johnston, MD is a board-certified Cardiovascular Disease Physician physician with a subspecialty in Cardiovascular Disease. They practice at Pavilion Surgery Center in Orange, California.

Question 5

What procedures does Warren David Johnston, MD perform?

Accepted Answer

Warren David Johnston, MD performs procedures across 1172 clinical categories. Their most commonly billed procedures based on Medicare claims data include , , and . Full procedure and CPT code data is available to Dmand AI subscribers, start a free trial.

Question 6

What is Warren David Johnston, MD's NPI number?

Accepted Answer

Warren David Johnston, MD's National Provider Identifier (NPI) is 1427052802. This is a public identifier issued by CMS and can be verified at the NPPES NPI Registry. Their primary taxonomy code is 207RC0000X, corresponding to Cardiovascular Disease Physician.

Question 7

What EHR does Warren David Johnston, MD use?

Accepted Answer

The EHR and practice technology used by Warren David Johnston, MD at Pavilion Surgery Center is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Question 8

What insurance does Warren David Johnston, MD accept?

Accepted Answer

Warren David Johnston, MD accepts 13 insurance plans. A full list of accepted payers is available in the profile above.

Question 9

What hospital is Warren David Johnston, MD affiliated with?

Accepted Answer

Warren David Johnston, MD holds hospital privileges at 1 institution(s). Their primary affiliation is Pavilion Surgery Center in Orange, California.

Question 10

What are Warren David Johnston, MD's board certifications?

Accepted Answer

Warren David Johnston, MD is board certified by American Board of Internal Medicine in Internal Medicine with subspecialty certification in Cardiovascular Disease. They have maintained this certification since .

Question 11

Where did Warren David Johnston, MD go to medical school?

Accepted Answer

Warren David Johnston, MD received their medical degree from University of Rochester Medical Center in 1975. They completed their Internal Medicine residency at University of Southern California/Los Angeles General Medical Center (USC/LA General) and a fellowship in Critical Care Medicine at University of Southern California/LACUSC Medical Center.

Question 12

How many patients does Warren David Johnston, MD see per year?

Accepted Answer

Based on CMS Medicare Part B claims data, Warren David Johnston, MD served approximately 949 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Question 13

What group practice does Warren David Johnston, MD belong to?

Accepted Answer

Warren David Johnston, MD is affiliated with PROVIDENCE MEDICAL FOUNDATION, a large (20+ physician) practice with 1070 physicians based in Orange, California. The practice is independently owned.

Question 14

Does Warren David Johnston, MD conduct clinical research or trials?

Accepted Answer

Warren David Johnston, MD has 11 indexed publications on record and no active clinical trial listings were found at time of last verification. Their research activity is available to Dmand AI subscribers. Sign up for a free trial to unlock their full research activity.

#	Procedure Code (CPT®/HCPCS II)	Procedure Patients	Procedure Volume
1	99214Established patient office or other outpatient visit, 30-39 minutes	315	527
2	99213Established patient office or other outpatient visit, typically 15 minutes	109	112
3	93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function	109	114
4	93000Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report	95	95
5	99204New patient office or other outpatient visit, 45-59 minutes	71	71

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Warren David Johnston, MD

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