Dr. John Robert Gray, MD
- Medicare services, 2024
- 816
- Medicare patients, 2024
- 360
- Part D claims, 2024
- 1,039
- Hospital affiliations
- 6
- Industry payments
- $23
- Practice address
- 6200 Shingle Creek Pkwy, Minneapolis, MN 55430
- Practice phone
- Call (763) 421-1032
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fresenius Medical Care of Champlin
Minneapolis, Minnesota
Find Dr. Gray's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Robert Gray is a nephrologist in Minneapolis, Minnesota
Dr. Gray practices at Fresenius Medical Care of Champlin in Minneapolis, Minnesota.
Dr. Gray's NPI, 1619998499, was assigned on July 21, 2006. Dr. Gray graduated from University of North Dakota School of Medicine in 1987. Dr. Gray holds Minnesota license 32388.
- NPI
- 1619998499NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911990452
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (763) 421-1032
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Robert Gray practices at Fresenius Medical Care of Champlin in Minneapolis, Minnesota
Dr. Gray's primary practice is Fresenius Medical Care of Champlin, at 6200 Shingle Creek Pkwy, Minneapolis, MN 55430 in Hennepin County. The practice phone is (763) 421-1032.
- Fresenius Medical Care of Champlin6200 Shingle Creek Pkwy, Minneapolis, MN 55430 · Hennepin CountyPhone(763) 421-1032
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Robert Gray is affiliated with 11 sites of care and 3 medical groups
Dr. Gray's primary practice is Fresenius Medical Care of Champlin in Minneapolis, Minnesota. Dr. Gray is also affiliated with Abbott Northwestern Hospital. The medical group on file is North Memorial Health. Dmand AI also links Dr. Gray to 5 more hospitals, 2 dialysis centers, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Robert Gray's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gray practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fresenius Medical Care of Champlin | Available with a free account |
| +10 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Robert Gray is one of 213 nephrologists in Minnesota
Nephrology is Dr. Gray's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Gray is licensed in Minnesota.
Specialties and state licenses
- Nephrology, MinnesotaPrimary
Nephrologists near Dr. Gray
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Robert Gray billed Medicare for 816 services in 2024
CMS data shows 816 Medicare services from Dr. Gray across 11 procedure codes in 2024, for 360 Medicare patients. Medicare paid $89,521 for them.
Dr. Gray's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4732024: 56920%
- Tests and treatments
- 2023: 2282024: 2478%
Where Dr. Gray's Medicare services took place, 2024
- In an office37746%
- In a facility43954%
Dr. Gray compared with the Minnesota median for nephrologists, 2024
- Dr. Gray
- Minnesota median
- Medicare services
- 816vs 49366% above
- Medicare patients
- 360vs 18595% above
- Part D claims
- 884vs 3722.4 times
Medians across 200 nephrologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Gray's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Gray?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gray and other nephrologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Robert Gray treated 360 Medicare patients in 2024, average age 72
CMS counts 360 Medicare patients who saw Dr. Gray in 2024. The largest group is 65 to 74, with 124 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 28% are also on Medicaid. Their average risk score is 4.14, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gray's median patient age at 69, with 46% women.
Dr. Gray's Medicare patients by age, 2024
Dr. Gray's Medicare patients by sex, 2024
- Women16245%
- Men19855%
Chronic conditions among Dr. Gray's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes56%
- Heart failure54%
- Ischemic heart disease49%
- Arthritis40%
- Atrial fibrillation40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gray's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Robert Gray wrote 1,039 Medicare Part D claims in 2024
In 2024, Dr. Gray wrote 1,039 Medicare Part D claims for 182 patients. 83% of them were for generic drugs. CMS names the drug for 884 of them, across 21 drugs with 11 or more claims each, at $209,668 in total drug cost. In 2023, CMS named 835 claims across 20 drugs.
Dr. Gray's Part D claims by kind of drug, 2024
- Generic861 claims83%
- Brand-name178 claims17%
Dr. Gray's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Gray's Part D claims, 2024
- Antibiotics2%19 of 1,039 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8352024: 8846%
Drugs named by CMS: 21 in 2024, 20 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John Robert Gray offers telehealth to Medicare patients
Dr. Gray accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gray as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Robert Gray received $23 in industry payments from 2016 to 2025
CMS Open Payments shows 3 general payments to Dr. Gray from 2 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 89% of the total. Relypsa, Inc. paid the most, $21.
General payments to Dr. Gray by program year, 2016 to 2025
General payments to Dr. Gray by kind, 2016 to 2025
- Food and beverage$2189%
- Education$311%
Companies that paid Dr. Gray the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Robert Gray graduated from University of North Dakota School of Medicine
Dr. Gray graduated from University of North Dakota School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Robert Gray's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Robert Gray
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Robert Gray's NPI number?
Dr. John Robert Gray's NPI number is 1619998499. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Robert Gray?
Dr. John Robert Gray is a nephrologist in Minneapolis, Minnesota. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. John Robert Gray practice?
Dr. Gray practices at 6200 Shingle Creek Pkwy, Minneapolis, MN 55430. Dr. Gray's primary practice is Fresenius Medical Care of Champlin in Minneapolis, Minnesota. Dmand AI also links Dr. Gray to 5 hospitals, 2 dialysis centers, 2 group practices and clinics and 2 medical groups.
What is Dr. John Robert Gray's office phone number?
The practice phone on file for Dr. Gray is (763) 421-1032.
What is Dr. John Robert Gray's medical license number?
Dr. Gray holds Minnesota license 32388.
Which hospitals is Dr. John Robert Gray affiliated with?
Dr. Gray is affiliated with Abbott Northwestern Hospital. Dmand AI links Dr. Gray to 5 more hospitals.
What medical group is Dr. John Robert Gray part of?
Dr. Gray is linked to North Memorial Health. Dmand AI links Dr. Gray to 2 more medical groups.
Does Dr. John Robert Gray accept Medicare?
Yes. CMS data shows Dr. Gray billed Medicare for 816 services in 2024, and Dr. Gray accepts Medicare assignment.
Does Dr. John Robert Gray offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gray as offering telehealth services.
How many Medicare patients does Dr. John Robert Gray see?
CMS counts 360 Medicare patients who saw Dr. Gray in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. John Robert Gray bill to Medicare?
In 2024, Dr. Gray's most billed Medicare services were hospital inpatient care (99232), dialysis (90960) and office visit, established patient (99215).
Where did Dr. John Robert Gray go to medical school?
Dr. Gray graduated from University of North Dakota School of Medicine in 1987.
What drugs does Dr. John Robert Gray prescribe most?
In 2024 Medicare Part D data, Dr. Gray's most prescribed drugs by claims were Jardiance, Torsemide and Calcitriol.
Has Dr. John Robert Gray received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Gray from 2 companies from 2016 to 2025. The largest total came from Relypsa, Inc.
How long has Dr. John Robert Gray been practicing?
Dr. Gray graduated from medical school in 1987, 39 years ago.
Selling to nephrology practices?
See nephrologists in Minnesota by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card