Joshua Tarkan, M.D.
NPI 1922104884 · Nephrology Physician · Newburyport, MA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joshua Tarkan, M.D. is a Nephrology Physician provider in Newburyport, MA (NPI 1922104884).
Provider details
- NPI number
- 1922104884
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 220460 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
4,719 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,138 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 788 | $129 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 691 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 557 | $117 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 315 | $15 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 667 | 185 |
| Furosemide | 177 | 66 |
| Lisinopril | 163 | 51 |
| Amlodipine Besylate | 154 | 52 |
| Sevelamer Carbonate | 116 | 35 |
| Losartan Potassium | 90 | 36 |
| Carvedilol | 64 | 22 |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-16
- Last updated
- 2016-04-23
Frequently asked questions
- What is Joshua Tarkan's NPI number?
- Joshua Tarkan's National Provider Identifier (NPI) is 1922104884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joshua Tarkan's specialty?
- Joshua Tarkan is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Joshua Tarkan located?
- Joshua Tarkan's practice location on file with NPPES is 260 Merrimac St, Newburyport, MA 01950-2192.
- What is Joshua Tarkan's phone number?
- The practice phone number listed in the NPPES registry for Joshua Tarkan is (978) 499-7400.
- Does Joshua Tarkan accept Medicare?
- Joshua Tarkan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joshua Tarkan's NPI active?
- Yes — Joshua Tarkan's NPI (1922104884) is active in the NPPES registry as of the last update on 2016-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.