Stephen Adler, MD
NPI 1164421020 · Nephrology Physician · Hawthorne, NY
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Adler, MD is a Nephrology Physician provider in Hawthorne, NY (NPI 1164421020).
Provider details
- NPI number
- 1164421020
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 166372 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
236 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 126 | $143 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 72 | $385 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 26 | $320 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 12 | $230 |
Typical Medicare-allowed amounts for these services range $143–$385 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 69 | 18 |
| Calcitriol | 47 | 11 |
| Losartan Potassium | 42 | 14 |
| Sevelamer Carbonate | 34 | — |
| Carvedilol | 34 | — |
| Calcium Acetate | 29 | — |
| Nifedipinebrand: Nifedipine Er | 21 | — |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-21
- Last updated
- 2021-05-27
- Certified
- 2021-05-27
Frequently asked questions
- What is Stephen Adler's NPI number?
- Stephen Adler's National Provider Identifier (NPI) is 1164421020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Adler's specialty?
- Stephen Adler is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Adler located?
- Stephen Adler's practice location on file with NPPES is 19 Bradhurst Ave, Hawthorne, NY 10532-2140.
- What is Stephen Adler's phone number?
- The practice phone number listed in the NPPES registry for Stephen Adler is (914) 493-7701.
- Does Stephen Adler accept Medicare?
- Stephen Adler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Adler's NPI active?
- Yes — Stephen Adler's NPI (1164421020) is active in the NPPES registry as of the last update on 2021-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.