Doctor profile · Federal record
Dr. Samuel Johnson, MD
Nephrology Physician (CMS: Nephrology) · Marietta, GA
- NPI 1225255128
- Accepts Medicare
- MIPS 91.1 / 100 · 2023
- 24 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
55 Whitcher St Ne, Suite 460
Marietta, GA 300601155
(770) 427-7389
fax (770) 427-1492 - Mailing address
-
55 Whitcher Street, Suite 460
Marietta, GA 300601155
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- August 1, 2019
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Georgia #54909
- Medicaid (21)
- GA #003123548D · GA #003123548G · GA #003123548J · GA #003123548F · GA #003123548H · GA #003123548I · GA #003123548U · GA #003123548V · GA #003123548E · GA #003123548O · GA #003123548P · GA #003123548K · GA #003123548M · GA #003123548B · GA #003123548C · GA #003123548S · GA #003123548L · GA #003123548R · GA #003123548T · GA #003123548N · GA #003123548Q
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225255128. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,560
Distinct HCPCS
10
Medicare allowed
$385,914
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 866 | 343 | $79 | |
76937 |
Ultrasonic guidance for blood vessel access | 346 | 185 | $14 | |
99152 |
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | 335 | 178 | $12 | |
36902 |
Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | 281 | 162 | $223 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 254 | 221 | $89 | |
81000 |
Manual urinalysis test with examination using microscope, non-automated | 222 | 167 | $4 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 222 | 29 | $353 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 169 | 157 | $172 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 158 | 84 | $120 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 128 | 95 | $129 |
In context: peer comparison
Among 6 peers in Marietta Nephrology Physician, average services per provider: 176. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$448
Transactions
20
Manufacturers
10
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 7 | $137.14 | |
| Baxter Healthcare | 1 | $80.60 | |
| Fresenius USA Marketing, INC. | 3 | $51.87 | |
| Travere Therapeutics, INC. | 2 | $37.92 | |
| Otsuka America Pharmaceutical, INC. | 2 | $32.27 | |
| Alexion Pharmaceuticals, INC. | 1 | $28.10 | |
| Calliditas Therapeutics US INC. | 1 | $21.27 | |
| Bayer Healthcare Pharmaceuticals INC. | 1 | $20.70 | |
| ConvaTec INC. | 1 | $20.14 | |
| Bard Peripheral Vascular, INC. | 1 | $18.43 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
772
Patients
214
Total drug cost
$38,253
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 101 | 35 | $649 |
| Furosemide | Generic | 89 | 32 | $407 |
| Carvedilol | Generic | 73 | 26 | $807 |
| Losartan Potassium | Generic | 67 | 26 | $862 |
| Nifedipine ER (Nifedipine) | Brand | 65 | 22 | $3,851 |
| Allopurinol | Generic | 56 | 18 | $777 |
| Torsemide | Generic | 50 | 18 | $1,367 |
| Lisinopril | Generic | 45 | 14 | $374 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 37 | 0 | $26,113 |
| Pantoprazole Sodium | Generic | 35 | 11 | $1,063 |
Hospital affiliations
Frequently asked questions
What is Dr. Samuel Johnson's medical specialty?
Dr. Samuel Johnson practices Nephrology Physician in Marietta, GA.
Where does Dr. Samuel Johnson practice?
Dr. Samuel Johnson practices at 55 Whitcher St Ne, Marietta, GA 300601155. Office phone: 7704277389.
What is Dr. Samuel Johnson's NPI?
Dr. Samuel Johnson's National Provider Identifier (NPI) is 1225255128, issued by NPPES.
Does Dr. Samuel Johnson accept Medicare assignment?
Yes. Dr. Samuel Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Samuel Johnson commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Ultrasonic guidance for blood vessel access (HCPCS 76937); Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older) (HCPCS 99152). Source: CMS Medicare Physician & Other Practitioners file.