Doctor profile · Federal record
Dr. Joshua Tarkan, M.D.
Nephrology Physician (CMS: Nephrology) · Newburyport, MA
- NPI 1922104884
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
260 Merrimac St
Newburyport, MA 019502192
(978) 499-7400
fax (978) 499-7326
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- April 23, 2016
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Massachusetts #220460
- Medicaid
- MA #110037949A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1922104884. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
7,837
Distinct HCPCS
10
Medicare allowed
$614,072
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
Q5106 |
Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units | 3,100 | 17 | $8 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 1,454 | 207 | $80 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 767 | 518 | $130 | |
J0885 |
Injection, epoetin alfa, (for non-esrd use), 1000 units | 560 | 11 | $7 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 519 | 269 | $120 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 346 | 44 | $356 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 273 | 229 | $175 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 181 | 139 | $182 | |
99291 |
Critical care, first 30-74 minutes | 154 | 60 | $214 | |
96372 |
Injection of drug or substance under skin or into muscle | 125 | 23 | $15 |
In context: peer comparison
Among 1 peers in Newburyport Nephrology Physician, average services per provider: 559. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,636
Patients
522
Total drug cost
$110,938
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Calcitriol | Generic | 539 | 154 | $9,370 |
| Lisinopril | Generic | 181 | 61 | $2,073 |
| Furosemide | Generic | 163 | 63 | $1,901 |
| Amlodipine Besylate | Generic | 136 | 49 | $1,624 |
| Losartan Potassium | Generic | 100 | 38 | $2,024 |
| Sevelamer Carbonate | Generic | 66 | 23 | $20,222 |
| Hydralazine Hcl | Generic | 65 | 18 | $1,972 |
| Allopurinol | Generic | 62 | 18 | $907 |
| Metoprolol Succinate | Generic | 62 | 22 | $1,846 |
| Torsemide | Generic | 60 | 18 | $3,354 |
Hospital affiliations
Frequently asked questions
What is Dr. Joshua Tarkan's medical specialty?
Dr. Joshua Tarkan practices Nephrology Physician in Newburyport, MA.
Where does Dr. Joshua Tarkan practice?
Dr. Joshua Tarkan practices at 260 Merrimac St, Newburyport, MA 019502192. Office phone: 9784997400.
What is Dr. Joshua Tarkan's NPI?
Dr. Joshua Tarkan's National Provider Identifier (NPI) is 1922104884, issued by NPPES.
Does Dr. Joshua Tarkan accept Medicare assignment?
Yes. Dr. Joshua Tarkan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joshua Tarkan commonly perform?
Top Medicare-reported procedures in 2023: Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units (HCPCS Q5106); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.