Dr. Samuel Andrew Johnson, MD
- Medicare services, 2024
- 3,755
- Medicare patients, 2024
- 805
- Part D claims, 2024
- 1,533
- MIPS score, 2024
- 93
- Hospital affiliations
- 4
- Practice address
- 55 Whitcher NE St, Marietta, GA 30060
- Practice phone
- Call (770) 479-0259
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Renal Care Center of North Georgia Bma
Marietta, Georgia
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. Samuel Andrew Johnson is a nephrologist in Marietta, Georgia
Dr. Johnson practices at Renal Care Center of North Georgia Bma in Marietta, Georgia.
Dr. Johnson's NPI, 1225255128, was assigned on April 20, 2007. Dr. Johnson graduated from Temple University School of Medicine in 2002. Dr. Johnson holds Georgia license 54909.
- NPI
- 1225255128NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214037373
- NPI enumeration date
- April 20, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (770) 479-0259
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Samuel Andrew Johnson practices at Renal Care Center of North Georgia Bma in Marietta, Georgia
Dr. Johnson's primary practice is Renal Care Center of North Georgia Bma, at 55 Whitcher NE St, Marietta, GA 30060 in Cobb County. The practice phone is (770) 479-0259.
- Renal Care Center of North Georgia Bma55 Whitcher NE St, Marietta, GA 30060 · Cobb CountyPhone(770) 479-0259
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Samuel Andrew Johnson is affiliated with 11 sites of care and 6 medical groups
Dr. Johnson's primary practice is Renal Care Center of North Georgia Bma in Marietta, Georgia. Dr. Johnson is also affiliated with Wellstar Kennestone Regional Medical Center. The medical group on file is Preferred Vascular Group. Dmand AI also links Dr. Johnson to 3 more hospitals, 5 medical groups, 3 group practices and clinics, 1 dialysis center, 1 home health agency and 1 ambulatory surgery center, 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. Samuel Andrew Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Renal Care Center of North Georgia Bma | Available with a free account |
| +10 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Samuel Andrew Johnson is one of 381 nephrologists in Georgia
Nephrology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Johnson is licensed in Georgia.
Specialties and state licenses
- Nephrology, GeorgiaPrimary
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. Samuel Andrew Johnson billed Medicare for 3,755 services in 2024
CMS data shows 3,755 Medicare services from Dr. Johnson across 30 procedure codes in 2024, for 805 Medicare patients. Medicare paid $298,456 for them.
Dr. Johnson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,6102024: 2,07929%
- Tests and treatments
- 2023: 6872024: 61211%
- Surgery
- 2023: 5852024: 45223%
- Imaging
- 2023: 4562024: 35323%
- Lab and pathology
- 2023: 2222024: 25917%
Where Dr. Johnson's Medicare services took place, 2024
- In an office1,69345%
- In a facility2,06255%
Dr. Johnson compared with the Georgia median for nephrologists, 2024
- Dr. Johnson
- Georgia median
- Medicare services
- 3,755vs 1,1243.3 times
- Medicare patients
- 805vs 3182.5 times
- Part D claims
- 1,176vs 1,0928% above
Medians across 377 nephrologists in Georgia with Dmand AI profiles that report each measure.
Dr. Johnson'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johnson and other nephrologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel Andrew Johnson treated 805 Medicare patients in 2024, average age 73
CMS counts 805 Medicare patients who saw Dr. Johnson in 2024. The largest group is 75 to 84, with 293 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 19% are also on Medicaid. Their average risk score is 4.37, 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. Johnson's median patient age at 71, with 47% women.
Dr. Johnson's Medicare patients by age, 2024
Dr. Johnson's Medicare patients by sex, 2024
- Women39649%
- Men40951%
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes57%
- Ischemic heart disease55%
- Heart failure52%
- Arthritis47%
- Atrial fibrillation39%
Share of Medicare patients with each condition. A patient can have several.
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 71
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. Samuel Andrew Johnson wrote 1,533 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 1,533 Medicare Part D claims for 255 patients. 87% of them were for generic drugs. CMS names the drug for 1,176 of them, across 38 drugs with 11 or more claims each, at $93,389 in total drug cost. In 2023, CMS named 1,263 claims across 44 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic1,337 claims87%
- Brand-name196 claims13%
Dr. Johnson'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. Johnson's Part D claims, 2024
- Opioids1%13 of 1,533 claims
- Antibiotics3%42 of 1,533 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: 1,2632024: 1,1767%
Drugs named by CMS: 38 in 2024, 44 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. Samuel Andrew Johnson scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Johnson for performance year 2024, reported individually. Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Johnson's MIPS scores, performance year 2024
- 93of 100Final score
- 66.7of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Samuel Andrew Johnson received $4,705 in industry payments from 2016 to 2025
CMS Open Payments shows 199 general payments to Dr. Johnson from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 83% of the total. Medtronic, Inc. paid the most, $969.
General payments to Dr. Johnson by program year, 2016 to 2025
General payments to Dr. Johnson by kind, 2016 to 2025
- Food and beverage$3,91883%
- Travel and lodging$60413%
- Education$1834%
Companies that paid Dr. Johnson 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. Samuel Andrew Johnson graduated from Temple University School of Medicine
Dr. Johnson graduated from Temple University School of Medicine in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Samuel Andrew 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 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)Clinician Public Reporting: Overall MIPS Performance (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. Samuel Andrew 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. Samuel Andrew Johnson's NPI number?
Dr. Samuel Andrew Johnson's NPI number is 1225255128. It was assigned on April 20, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel Andrew Johnson?
Dr. Samuel Andrew Johnson is a nephrologist in Marietta, Georgia. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Samuel Andrew Johnson practice?
Dr. Johnson practices at 55 Whitcher NE St, Marietta, GA 30060. Dr. Johnson's primary practice is Renal Care Center of North Georgia Bma in Marietta, Georgia. Dmand AI also links Dr. Johnson to 3 hospitals, 5 medical groups, 3 group practices and clinics, 1 dialysis center, 1 home health agency and 1 ambulatory surgery center.
What is Dr. Samuel Andrew Johnson's office phone number?
The practice phone on file for Dr. Johnson is (770) 479-0259.
What is Dr. Samuel Andrew Johnson's medical license number?
Dr. Johnson holds Georgia license 54909.
Which hospitals is Dr. Samuel Andrew Johnson affiliated with?
Dr. Johnson is affiliated with Wellstar Kennestone Regional Medical Center. Dmand AI links Dr. Johnson to 3 more hospitals.
What medical group is Dr. Samuel Andrew Johnson part of?
Dr. Johnson is linked to Preferred Vascular Group. Dmand AI links Dr. Johnson to 5 more medical groups.
Does Dr. Samuel Andrew Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 3,755 services in 2024, and Dr. Johnson accepts Medicare assignment.
What is Dr. Samuel Andrew Johnson's MIPS score?
Dr. Johnson's MIPS final score for performance year 2024 is 93 out of 100, reported individually.
How many Medicare patients does Dr. Samuel Andrew Johnson see?
CMS counts 805 Medicare patients who saw Dr. Johnson in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Samuel Andrew Johnson bill to Medicare?
In 2024, Dr. Johnson's most billed Medicare services were hospital inpatient care (99232), lab and pathology test (81000) and special service (99152).
Where did Dr. Samuel Andrew Johnson go to medical school?
Dr. Johnson graduated from Temple University School of Medicine in 2002.
What drugs does Dr. Samuel Andrew Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Amlodipine Besylate, Furosemide and Nifedipine ER.
Has Dr. Samuel Andrew Johnson received payments from drug or device companies?
CMS Open Payments shows $4,705 in general payments to Dr. Johnson from 31 companies from 2016 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Samuel Andrew Johnson been practicing?
Dr. Johnson graduated from medical school in 2002, 24 years ago.
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