Question 1

What is Dr. Warren Chang, MD's email address?

Accepted Answer

Dr. Warren Chang, MD's email address is available to verified Dmand AI users. Their primary practice is located at Kaiser Permanente - South San Francisco Medical Center in South San Francisco, California. Sign up for a free trial to reveal their direct contact information.

Question 2

What is Dr. Warren Chang, MD's phone number?

Accepted Answer

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

Question 3

Where does Dr. Warren Chang, MD practice?

Accepted Answer

Dr. Warren Chang, MD is a Nephrology Physician physician currently practicing at Kaiser Permanente - South San Francisco Medical Center in South San Francisco, California. They hold admitting privileges at 1 hospital(s), including KAISER FOUNDATION HOSPITAL - SOUTH SAN FRANCISCO. To see all the affiliations of Dr. Warren Chang, MD, start a free trial.

Question 4

What is Dr. Warren Chang, MD's specialty?

Accepted Answer

Dr. Warren Chang, MD is a board-certified Nephrology Physician physician with a subspecialty in Nephrology. They practice at Kaiser Permanente - South San Francisco Medical Center in South San Francisco, California.

Question 5

What procedures does Dr. Warren Chang, MD perform?

Accepted Answer

Dr. Warren Chang, MD performs procedures across 1370 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 Dr. Warren Chang, MD's NPI number?

Accepted Answer

Dr. Warren Chang, MD's National Provider Identifier (NPI) is 1083674550. This is a public identifier issued by CMS and can be verified at the NPPES NPI Registry. Their primary taxonomy code is 207RN0300X, corresponding to Nephrology Physician.

Question 7

What EHR does Dr. Warren Chang, MD use?

Accepted Answer

The EHR and practice technology used by Dr. Warren Chang, MD at Kaiser Permanente - South San Francisco Medical Center is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Question 8

What insurance does Dr. Warren Chang, MD accept?

Accepted Answer

Dr. Warren Chang, MD accepts 17 insurance plans. A full list of accepted payers is available in the profile above.

Question 9

What hospital is Dr. Warren Chang, MD affiliated with?

Accepted Answer

Dr. Warren Chang, MD holds hospital privileges at 1 institution(s). Their primary affiliation is KAISER FOUNDATION HOSPITAL - SOUTH SAN FRANCISCO in South San Francisco, California.

Question 10

What are Dr. Warren Chang, MD's board certifications?

Accepted Answer

Dr. Warren Chang, MD is board certified by American Board of Internal Medicine in Internal Medicine with subspecialty certification in Nephrology. They have maintained this certification since .

Question 11

Where did Dr. Warren Chang, MD go to medical school?

Accepted Answer

Dr. Warren Chang, MD received their medical degree from UC Davis School of Medicine in 1998. They completed their Internal Medicine residency at University of California Davis Health and a fellowship in Nephrology at University of California Davis Health.

Question 12

How many patients does Dr. Warren Chang, MD see per year?

Accepted Answer

Based on CMS Medicare Part B claims data, Dr. Warren Chang, MD served approximately 648 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Question 13

What group practice does Dr. Warren Chang, MD belong to?

Accepted Answer

Dr. Warren Chang, MD is affiliated with WEST COAST KIDNEY, a large (20+ physician) practice with 44 physicians based in South San Francisco, California. The practice is independently owned.

Question 14

Does Dr. Warren Chang, MD conduct clinical research or trials?

Accepted Answer

Dr. Warren Chang, MD has 12 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	143	327
2	99232Subsequent hospital inpatient care, typically 25 minutes per day	108	211
3	99233Subsequent hospital inpatient care, typically 35 minutes per day	104	210
4	99223Initial hospital inpatient care, typically 70 minutes per day	72	76
5	99215Established patient office or other outpatient, visit typically 40 minutes	56	122

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Dr. Warren Chang, MD

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