Question 1

What is John Constantine Gretes, MD's email address?

Accepted Answer

John Constantine Gretes, MD's email address is available to verified Dmand AI users. Their primary practice is located at Rai Care Center Gloucester in Newport News, Virginia. Sign up for a free trial to reveal their direct contact information.

Question 2

What is John Constantine Gretes, MD's phone number?

Accepted Answer

John Constantine Gretes, MD's direct phone number is available to Dmand AI subscribers. To access their direct number, start a free trial.

Question 3

Where does John Constantine Gretes, MD practice?

Accepted Answer

John Constantine Gretes, MD is a Nephrology Physician physician currently practicing at Rai Care Center Gloucester in Newport News, Virginia. They hold admitting privileges at 5 hospital(s), including Rai Care Center Gloucester. To see all the affiliations of John Constantine Gretes, MD, start a free trial.

Question 4

What is John Constantine Gretes, MD's specialty?

Accepted Answer

John Constantine Gretes, MD is a board-certified Nephrology Physician physician with a subspecialty in Nephrology. They practice at Rai Care Center Gloucester in Newport News, Virginia.

Question 5

What procedures does John Constantine Gretes, MD perform?

Accepted Answer

John Constantine Gretes, MD performs procedures across 1003 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 Constantine Gretes, MD's NPI number?

Accepted Answer

John Constantine Gretes, MD's National Provider Identifier (NPI) is 1043248453. 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 John Constantine Gretes, MD use?

Accepted Answer

The EHR and practice technology used by John Constantine Gretes, MD at Rai Care Center Gloucester is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Question 8

What insurance does John Constantine Gretes, MD accept?

Accepted Answer

John Constantine Gretes, MD accepts 0 insurance plans. A full list of accepted payers is available in the profile above.

Question 9

What hospital is John Constantine Gretes, MD affiliated with?

Accepted Answer

John Constantine Gretes, MD holds hospital privileges at 5 institution(s). Their primary affiliation is Rai Care Center Gloucester in Newport News, Virginia.

Question 10

What are John Constantine Gretes, MD's board certifications?

Accepted Answer

John Constantine Gretes, MD's board certification details are available to Dmand AI subscribers.

Question 11

Where did John Constantine Gretes, MD go to medical school?

Accepted Answer

John Constantine Gretes, MD's education history is available to Dmand AI subscribers.

Question 12

How many patients does John Constantine Gretes, MD see per year?

Accepted Answer

Based on CMS Medicare Part B claims data, John Constantine Gretes, MD served approximately 596 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Question 13

What group practice does John Constantine Gretes, MD belong to?

Accepted Answer

John Constantine Gretes, MD is affiliated with RIVERSIDE PHYSICIAN SERVICES INC, a large (20+ physician) practice with 420 physicians based in Newport News, Virginia. The practice is independently owned.

Question 14

Does John Constantine Gretes, MD conduct clinical research or trials?

Accepted Answer

John Constantine Gretes, MD has 0 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	212	396
2	99213Established patient office or other outpatient visit, typically 15 minutes	90	101
3	90960Dialysis services (4 or more physician visits per month), patient 20 years of age and older	42	137
4	90961Dialysis services (2-3 physician visits per month), patient 20 years of age and older	39	70
5	99232Subsequent hospital inpatient care, typically 25 minutes per day	39	60

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John Constantine Gretes, MD

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