Question 1

What is John O'Brien Clarke III, M.D.'s email address?

Accepted Answer

John O'Brien Clarke III, M.D.'s email address is available to verified Dmand AI users. Their primary practice is located at Stanford Hospital in Stanford, California. Sign up for a free trial to reveal their direct contact information.

Question 2

What is John O'Brien Clarke III, M.D.'s phone number?

Accepted Answer

John O'Brien Clarke III, M.D.'s direct phone number is available to Dmand AI subscribers. To access their direct number, start a free trial.

Question 3

Where does John O'Brien Clarke III, M.D. practice?

Accepted Answer

John O'Brien Clarke III, M.D. is a Gastroenterology Physician physician currently practicing at Stanford Hospital in Stanford, California. They hold admitting privileges at 1 hospital(s), including STANFORD HEALTH CARE. To see all the affiliations of John O'Brien Clarke III, M.D., start a free trial.

Question 4

What is John O'Brien Clarke III, M.D.'s specialty?

Accepted Answer

John O'Brien Clarke III, M.D. is a board-certified Gastroenterology Physician physician with a subspecialty in Gastroenterology. They practice at Stanford Hospital in Stanford, California.

Question 5

What procedures does John O'Brien Clarke III, M.D. perform?

Accepted Answer

John O'Brien Clarke III, M.D. performs procedures across 1132 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 John O'Brien Clarke III, M.D.'s NPI number?

Accepted Answer

John O'Brien Clarke III, M.D.'s National Provider Identifier (NPI) is 1467539643. This is a public identifier issued by CMS and can be verified at the NPPES NPI Registry. Their primary taxonomy code is 207RG0100X, corresponding to Gastroenterology Physician.

Question 7

What EHR does John O'Brien Clarke III, M.D. use?

Accepted Answer

The EHR and practice technology used by John O'Brien Clarke III, M.D. at Stanford Hospital is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Question 8

What insurance does John O'Brien Clarke III, M.D. accept?

Accepted Answer

John O'Brien Clarke III, M.D. accepts 11 insurance plans. A full list of accepted payers is available in the profile above.

Question 9

What hospital is John O'Brien Clarke III, M.D. affiliated with?

Accepted Answer

John O'Brien Clarke III, M.D. holds hospital privileges at 1 institution(s). Their primary affiliation is STANFORD HEALTH CARE in Stanford, California.

Question 10

What are John O'Brien Clarke III, M.D.'s board certifications?

Accepted Answer

John O'Brien Clarke III, M.D. is board certified by American Board of Internal Medicine in Internal Medicine with subspecialty certification in Gastroenterology. They have maintained this certification since .

Question 11

Where did John O'Brien Clarke III, M.D. go to medical school?

Accepted Answer

John O'Brien Clarke III, M.D. received their medical degree from Vagelos College of Physicians and Surgeons in 1999. They completed their Internal Medicine residency at Johns Hopkins University and a fellowship in Gastroenterology at Johns Hopkins University.

Question 12

How many patients does John O'Brien Clarke III, M.D. see per year?

Accepted Answer

Based on CMS Medicare Part B claims data, John O'Brien Clarke III, M.D. served approximately 1020 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Question 13

What group practice does John O'Brien Clarke III, M.D. belong to?

Accepted Answer

John O'Brien Clarke III, M.D. is affiliated with STANFORD HEALTH CARE, a large (20+ physician) practice with 2197 physicians based in Stanford, California. The practice is independently owned.

Question 14

Does John O'Brien Clarke III, M.D. conduct clinical research or trials?

Accepted Answer

John O'Brien Clarke III, M.D. has 157 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	185	256
2	43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope	171	174
3	99204New patient office or other outpatient visit, 45-59 minutes	78	78
4	91010Measurement of esophageal swallowing movement	68	70
5	91037Monitoring and recording of esophageal function through nasal tube with electrode	68	69

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John O'Brien Clarke III, M.D.

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