Stephen Warshafsky, M.D.
NPI 1598846073 · Internal Medicine Physician · Ardsley, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Warshafsky, M.D. is a Internal Medicine Physician provider in Ardsley, NY (NPI 1598846073).
Provider details
- NPI number
- 1598846073
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 60188090 (NY)
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
4,235 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) |
|---|---|---|
| Complex Chronic Care Management Services for Two Or More Chronic Conditions, Each Additional 60 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99489 | 1,805 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 625 | $137 |
| Complex Chronic Care Management Services for Two Or More Chronic Conditions, First 60 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99487 | 589 | $145 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 379 | $195 |
| Chronic Care Management Services for Two Or More Chronic Conditions, First 30 Minutes Provided Personally By Health Care Professional, Per Calendar Month99491 | 332 | $91 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 152 | 44 |
| Amlodipine Besylate | 103 | 33 |
| Losartan Potassium | 80 | 26 |
| Rosuvastatin Calcium | 70 | 21 |
| Metoprolol Succinate | 52 | 14 |
| Metformin Hcl | 45 | 17 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2009-01-27
Frequently asked questions
- What is Stephen Warshafsky's NPI number?
- Stephen Warshafsky's National Provider Identifier (NPI) is 1598846073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Warshafsky's specialty?
- Stephen Warshafsky is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Warshafsky located?
- Stephen Warshafsky's practice location on file with NPPES is 1055 Saw Mill River Rd, Ardsley, NY 10502-1050.
- What is Stephen Warshafsky's phone number?
- The practice phone number listed in the NPPES registry for Stephen Warshafsky is (914) 591-0733.
- Does Stephen Warshafsky accept Medicare?
- Stephen Warshafsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Warshafsky's NPI active?
- Yes — Stephen Warshafsky's NPI (1598846073) is active in the NPPES registry as of the last update on 2009-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.