Question 1

What is DR. William Sierra, M.D.'s email address?

Accepted Answer

DR. William Sierra, M.D.'s email address is available to verified Dmand AI users. Their primary practice is located at in Los Angeles, California. Sign up for a free trial to reveal their direct contact information.

Question 2

What is DR. William Sierra, M.D.'s phone number?

Accepted Answer

DR. William Sierra, 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 DR. William Sierra, M.D. practice?

Accepted Answer

DR. William Sierra, M.D. is a Ophthalmology Physician physician currently practicing at in Los Angeles, California. They hold admitting privileges at 0 hospital(s), including . To see all the affiliations of DR. William Sierra, M.D., start a free trial.

Question 4

What is DR. William Sierra, M.D.'s specialty?

Accepted Answer

DR. William Sierra, M.D. is a board-certified Ophthalmology Physician physician. They practice at in Los Angeles, California.

Question 5

What procedures does DR. William Sierra, M.D. perform?

Accepted Answer

DR. William Sierra, M.D. performs procedures across 0 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. William Sierra, M.D.'s NPI number?

Accepted Answer

DR. William Sierra, M.D.'s National Provider Identifier (NPI) is 1275552796. This is a public identifier issued by CMS and can be verified at the NPPES NPI Registry. Their primary taxonomy code is 207W00000X, corresponding to Ophthalmology Physician.

Question 7

What EHR does DR. William Sierra, M.D. use?

Accepted Answer

The EHR and practice technology used by DR. William Sierra, M.D. at is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Question 8

What insurance does DR. William Sierra, M.D. accept?

Accepted Answer

DR. William Sierra, M.D. accepts 8 insurance plans. A full list of accepted payers is available in the profile above.

Question 9

What hospital is DR. William Sierra, M.D. affiliated with?

Accepted Answer

DR. William Sierra, M.D. holds hospital privileges at 0 institution(s). Their primary affiliation is in , .

Question 10

What are DR. William Sierra, M.D.'s board certifications?

Accepted Answer

DR. William Sierra, M.D. is board certified by American Board of Ophthalmology in Ophthalmology. They have maintained this certification since .

Question 11

Where did DR. William Sierra, M.D. go to medical school?

Accepted Answer

DR. William Sierra, M.D. received their medical degree from Loma Linda University School Of Medicine in 1975. They completed their Ophthalmology residency at Adventist Health White Memorial.

Question 12

How many patients does DR. William Sierra, M.D. see per year?

Accepted Answer

Based on CMS Medicare Part B claims data, DR. William Sierra, M.D. served approximately 0 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Question 13

What group practice does DR. William Sierra, M.D. belong to?

Accepted Answer

DR. William Sierra, M.D.'s group practice affiliation details are available to Dmand AI subscribers.

Question 14

Does DR. William Sierra, M.D. conduct clinical research or trials?

Accepted Answer

DR. William Sierra, M.D. has 2 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.

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DR. William Sierra, M.D.

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