John Danziger, M.D.
NPI 1730161142 · Nephrology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Danziger, M.D. is a Nephrology Physician provider in Boston, MA (NPI 1730161142).
Provider details
- NPI number
- 1730161142
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 213443 (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
20 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
2,062 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, Per Day, Less Than Full Month Service (20 Years Or Older)90970 | 341 | $10 |
| Hemodialysis Procedure With Physician Evaluation90935 | 217 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 162 | $102 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 105 | $372 |
| 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 | 105 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 124 | 40 |
| Dapagliflozin Propanediolbrand: Farxiga | 83 | 20 |
| Lisinopril | 64 | 18 |
| Amlodipine Besylate | 61 | 28 |
| Torsemide | 54 | 21 |
| Clonidine Hcl | 47 | 17 |
| Empagliflozinbrand: Jardiance | 33 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-20
- Last updated
- 2011-02-25
Frequently asked questions
- What is John Danziger's NPI number?
- John Danziger's National Provider Identifier (NPI) is 1730161142, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Danziger's specialty?
- John Danziger is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is John Danziger located?
- John Danziger's practice location on file with NPPES is 185 Pilgrim Rd, Boston, MA 02215-5324.
- What is John Danziger's phone number?
- The practice phone number listed in the NPPES registry for John Danziger is (617) 632-9880.
- Does John Danziger accept Medicare?
- John Danziger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Danziger's NPI active?
- Yes — John Danziger's NPI (1730161142) is active in the NPPES registry as of the last update on 2011-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.