Dr. Greg R. Johnson, DO
- Medicare services, 2021
- 17
- Part D claims, 2021
- 14
- Industry payments
- $50
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 3909 New Vision Dr Ppg First Care Walk In Clinic, Fort Wayne, IN 46845-1725
- Practice phone
- Call (260) 373-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Parkview Physicians Group
Primary care practice · Fort Wayne, Indiana
Find Dr. Johnson'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. Greg R. Johnson is a nephrologist in Fort Wayne, Indiana
Dr. Johnson practices at Parkview Physicians Group in Fort Wayne, Indiana.
Dr. Johnson's NPI, 1013960269, was assigned on May 18, 2006. Dr. Johnson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1988. Dr. Johnson holds Indiana license 02001531A.
- NPI
- 1013960269NPI Registry (opens in a new tab)
- NPI enumeration date
- May 18, 2006
- NPI status
- Active
- Practice phone
- (260) 373-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Greg R. Johnson practices at 2 locations in Fort Wayne, Indiana
Dr. Johnson's primary practice is Parkview Physicians Group, at 3909 New Vision Dr Ppg First Care Walk In Clinic, Fort Wayne, IN 46845-1725. The practice phone is (260) 373-8000. The NPI Registry lists Dr. Johnson's practice address as 11109 Parkview Plaza Dr, Fort Wayne, IN 46845.
- Parkview Physicians GroupPrimary3909 New Vision Dr Ppg First Care Walk In Clinic, Fort Wayne, IN 46845-1725Phone(260) 373-8000
- NPI Registry address11109 Parkview Plaza Dr, Fort Wayne, IN 46845 · Allen CountyPhone(260) 469-6602
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Greg R. Johnson is affiliated with 1 site of care and 1 medical group
Dr. Johnson's primary practice is Parkview Physicians Group in Fort Wayne, Indiana. The medical group on file is Parkview Physicians Group.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Greg R. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Parkview Physicians Group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Greg R. Johnson is one of 197 nephrologists in Indiana
Nephrology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Johnson is licensed in Indiana.
Specialties and state licenses
- Nephrology, IndianaPrimary
Nephrologists near Dr. Johnson
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. Greg R. Johnson billed Medicare for 17 services in 2021
CMS data shows 17 Medicare services from Dr. Johnson across 1 procedure code in 2021, all of them office visits. Medicare paid $1,039 for them. Every service was in an office.
Dr. Johnson's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 182021: 176%
Dr. Johnson compared with the Indiana median for nephrologists, 2021
- Dr. Johnson
- Indiana median
- Medicare services
- 17vs 91998% below
- Part D claims
- 14vs 82398% below
Medians across 204 nephrologists in Indiana with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2021
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. Johnson?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other nephrologists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Greg R. Johnson's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 60, with 0% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Greg R. Johnson wrote 14 Medicare Part D claims in 2021
In 2021, Dr. Johnson wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $186 in total drug cost. In 2018, CMS named 15 claims across 1 drug.
Dr. Johnson's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2021
- 2018
- 2021
- Claims for drugs CMS names
- 2018: 152021: 147%
Drugs named by CMS: 1 in 2021, 1 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Greg R. Johnson received $50 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Johnson from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Idorsia Pharmaceuticals US Inc paid the most, $25.
General payments to Dr. Johnson by program year, 2024 to 2025
Companies that paid Dr. Johnson the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Greg R. Johnson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Johnson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Greg R. Johnson'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Greg R. Johnson
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. Greg R. Johnson's NPI number?
Dr. Greg R. Johnson's NPI number is 1013960269. It was assigned on May 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Greg R. Johnson?
Dr. Greg R. Johnson is a nephrologist in Fort Wayne, Indiana. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Greg R. Johnson practice?
Dr. Johnson practices at 3909 New Vision Dr Ppg First Care Walk In Clinic, Fort Wayne, IN 46845-1725. Dr. Johnson also practices at 11109 Parkview Plaza Dr, Fort Wayne, IN 46845. Dr. Johnson's primary practice is Parkview Physicians Group in Fort Wayne, Indiana.
What is Dr. Greg R. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (260) 373-8000.
What is Dr. Greg R. Johnson's medical license number?
Dr. Johnson holds Indiana license 02001531A.
What medical group is Dr. Greg R. Johnson part of?
Dr. Johnson is linked to Parkview Physicians Group.
Does Dr. Greg R. Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 17 services in 2021.
What services does Dr. Greg R. Johnson bill to Medicare?
In 2021, Dr. Johnson's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Greg R. Johnson go to medical school?
Dr. Johnson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1988.
What drugs does Dr. Greg R. Johnson prescribe most?
In 2021 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Atenolol.
Has Dr. Greg R. Johnson received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Johnson from 2 companies from 2024 to 2025. The largest total came from Idorsia Pharmaceuticals US Inc.
How long has Dr. Greg R. Johnson been practicing?
Dr. Johnson graduated from medical school in 1988, 38 years ago.
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