Dr. Gregory J. Merten, MD
- Medicare services, 2024
- 7,308
- Medicare patients, 2024
- 443
- Part D claims, 2024
- 757
- Hospital affiliations
- 4
- Industry payments
- $2,835
- Practice address
- 7903 Providence Rd, Charlotte, NC 28277
- Practice phone
- Call (704) 348-2992
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Metrolina Nephrology Associates, PA
Charlotte, North Carolina
Find Dr. Merten's professional email, personal email and mobile number
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Dr. Gregory J. Merten is a nephrologist in Charlotte, North Carolina
Dr. Merten practices at Metrolina Nephrology Associates, PA in Charlotte, North Carolina.
Dr. Merten's NPI, 1154308435, was assigned on December 28, 2005. Dr. Merten graduated from University of Minnesota Medical School in 2000. Dr. Merten holds North Carolina license 2002-00256.
- NPI
- 1154308435NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163474727
- NPI enumeration date
- December 28, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (704) 348-2992
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory J. Merten practices at Metrolina Nephrology Associates, PA in Charlotte, North Carolina
Dr. Merten's primary practice is Metrolina Nephrology Associates, PA, at 7903 Providence Rd, Charlotte, NC 28277 in Mecklenburg County. The practice phone is (704) 348-2992.
- Metrolina Nephrology Associates, PA7903 Providence Rd, Charlotte, NC 28277 · Mecklenburg CountyPhone(704) 348-2992
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory J. Merten is affiliated with 10 sites of care and 2 medical groups
Dr. Merten's primary practice is Metrolina Nephrology Associates, PA in Charlotte, North Carolina. Dr. Merten is also affiliated with Atrium Health Carolinas Medical Center. The medical group on file is Atrium Health Levine Children's Gastroenterology. Dmand AI also links Dr. Merten to 3 more hospitals, 3 dialysis centers, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory J. Merten's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merten practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Metrolina Nephrology Associates, PA | Available with a free account |
| +9 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory J. Merten is one of 348 nephrologists in North Carolina
Nephrology is Dr. Merten's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Merten is board certified in nephrology by the American Board of Internal Medicine. Dr. Merten is licensed in North Carolina.
Specialties and state licenses
- Nephrology, North CarolinaPrimary
Nephrologists near Dr. Merten
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. Gregory J. Merten billed Medicare for 7,308 services in 2024
CMS data shows 7,308 Medicare services from Dr. Merten across 30 procedure codes in 2024, for 443 Medicare patients. Medicare paid $148,572 for them.
Dr. Merten's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 5,0202024: 3,76025%
- Lab and pathology
- 2023: 2,2692024: 1,85718%
- Office and hospital visits
- 2023: 5542024: 75737%
- Surgery
- 2023: 2652024: 37341%
- Tests and treatments
- 2023: 4662024: 32530%
- Other services
- 2023: 02024: 236
Where Dr. Merten's Medicare services took place, 2024
- In an office7,12698%
- In a facility1822%
Dr. Merten compared with the North Carolina median for nephrologists, 2024
- Dr. Merten
- North Carolina median
- Medicare services
- 7,308vs 1,0467.0 times
- Medicare patients
- 443vs 29749% above
- Part D claims
- 564vs 73223% below
Medians across 346 nephrologists in North Carolina with Dmand AI profiles that report each measure.
Dr. Merten'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. Merten?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merten and other nephrologists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory J. Merten treated 443 Medicare patients in 2024, average age 73
CMS counts 443 Medicare patients who saw Dr. Merten in 2024. The largest group is 75 to 84, with 189 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 12% are also on Medicaid. Their average risk score is 3.61, 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. Merten's median patient age at 70, with 47% women.
Dr. Merten's Medicare patients by age, 2024
Dr. Merten's Medicare patients by sex, 2024
- Women19444%
- Men24956%
Chronic conditions among Dr. Merten's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes57%
- Arthritis40%
- Ischemic heart disease40%
- Heart failure36%
- Atrial fibrillation31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Merten's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory J. Merten wrote 757 Medicare Part D claims in 2024
In 2024, Dr. Merten wrote 757 Medicare Part D claims for 203 patients. 92% of them were for generic drugs. CMS names the drug for 564 of them, across 19 drugs with 11 or more claims each, at $85,522 in total drug cost. In 2023, CMS named 372 claims across 12 drugs.
Dr. Merten's Part D claims by kind of drug, 2024
- Generic695 claims92%
- Brand-name62 claims8%
Dr. Merten'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. Merten's Part D claims, 2024
- Antibiotics3%21 of 757 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: 3722024: 56452%
Drugs named by CMS: 19 in 2024, 12 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. Gregory J. Merten offers telehealth to Medicare patients
Dr. Merten accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Merten as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory J. Merten received $2,835 in industry payments from 2016 to 2025
CMS Open Payments shows 75 general payments to Dr. Merten from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 87% of the total. Mallinckrodt LLC paid the most, $439.
General payments to Dr. Merten by program year, 2016 to 2025
General payments to Dr. Merten by kind, 2016 to 2025
- Food and beverage$2,46887%
- Education$36713%
Companies that paid Dr. Merten 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. Gregory J. Merten graduated from University of Minnesota Medical School
Dr. Merten graduated from University of Minnesota Medical School in 2000.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory J. Merten'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 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. Gregory J. Merten
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. Gregory J. Merten's NPI number?
Dr. Gregory J. Merten's NPI number is 1154308435. It was assigned on December 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory J. Merten?
Dr. Gregory J. Merten is a nephrologist in Charlotte, North Carolina. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gregory J. Merten practice?
Dr. Merten practices at 7903 Providence Rd, Charlotte, NC 28277. Dr. Merten's primary practice is Metrolina Nephrology Associates, PA in Charlotte, North Carolina. Dmand AI also links Dr. Merten to 3 hospitals, 3 dialysis centers, 2 group practices and clinics and 1 medical group.
What is Dr. Gregory J. Merten's office phone number?
The practice phone on file for Dr. Merten is (704) 348-2992.
What is Dr. Gregory J. Merten's medical license number?
Dr. Merten holds North Carolina license 2002-00256.
Which hospitals is Dr. Gregory J. Merten affiliated with?
Dr. Merten is affiliated with Atrium Health Carolinas Medical Center. Dmand AI links Dr. Merten to 3 more hospitals.
What medical group is Dr. Gregory J. Merten part of?
Dr. Merten is linked to Atrium Health Levine Children's Gastroenterology. Dmand AI links Dr. Merten to 1 more medical group.
Does Dr. Gregory J. Merten accept Medicare?
Yes. CMS data shows Dr. Merten billed Medicare for 7,308 services in 2024, and Dr. Merten accepts Medicare assignment.
Does Dr. Gregory J. Merten offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Merten as offering telehealth services.
How many Medicare patients does Dr. Gregory J. Merten see?
CMS counts 443 Medicare patients who saw Dr. Merten in 2024, with an average age of 73.
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Is Dr. Gregory J. Merten board certified?
Yes. Dr. Merten is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Gregory J. Merten bill to Medicare?
In 2024, Dr. Merten's most billed Medicare services were injected or infused drug (J0881), surgery: heart and blood vessels (36415) and lab and pathology test (80069).
Where did Dr. Gregory J. Merten go to medical school?
Dr. Merten graduated from University of Minnesota Medical School in 2000.
What drugs does Dr. Gregory J. Merten prescribe most?
In 2024 Medicare Part D data, Dr. Merten's most prescribed drugs by claims were Calcitriol, Furosemide and Amlodipine Besylate.
Has Dr. Gregory J. Merten received payments from drug or device companies?
CMS Open Payments shows $2,835 in general payments to Dr. Merten from 20 companies from 2016 to 2025. The largest total came from Mallinckrodt LLC.
How long has Dr. Gregory J. Merten been practicing?
Dr. Merten graduated from medical school in 2000, 26 years ago.
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