Robert Niznik, MD
NPI 1922447069 · Nephrology Physician · Bellingham, WA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Niznik, MD is a Nephrology Physician provider in Bellingham, WA (NPI 1922447069).
Provider details
- NPI number
- 1922447069
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60296 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
727 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) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 174 | $329 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 170 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 112 | $72 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $84 |
| 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 | 45 | $15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 113 | 35 |
| Lisinopril | 111 | 35 |
| Torsemide | 88 | 26 |
| Empagliflozinbrand: Jardiance | 82 | 23 |
| Losartan Potassium | 64 | 27 |
| Calcitriol | 56 | 14 |
| Furosemide | 55 | 20 |
Practice location
Mailing address
Additional practice locations (2)
- Mayo Clinic 200 1st St SwRochester, MN 55905-0001Phone: (507) 284-2511
- Mayo Clinic 200 1st St SwRochester, MN 55905-0001Phone: (507) 284-2511
Registry dates
- Enumerated
- 2013-06-21
- Last updated
- 2025-09-11
- Certified
- 2025-09-11
Frequently asked questions
- What is Robert Niznik's NPI number?
- Robert Niznik's National Provider Identifier (NPI) is 1922447069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Niznik's specialty?
- Robert Niznik is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Niznik located?
- Robert Niznik's practice location on file with NPPES is 3104 Squalicum Pkwy Ste 101, Bellingham, WA 98225-1941.
- What is Robert Niznik's phone number?
- The practice phone number listed in the NPPES registry for Robert Niznik is (360) 734-9233.
- Does Robert Niznik accept Medicare?
- Robert Niznik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Niznik's NPI active?
- Yes — Robert Niznik's NPI (1922447069) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.