Michael Zaslow, M.D.
NPI 1588662985 · Internal Medicine Physician · Winchester, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Zaslow, M.D. is a Internal Medicine Physician provider in Winchester, MA (NPI 1588662985).
Provider details
- NPI number
- 1588662985
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 48969 (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
821 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 250 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 218 | $99 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 77 | $196 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 66 | $4 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 66 | $16 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 47 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 234 | 55 |
| Lisinopril | 160 | 36 |
| Amlodipine Besylate | 84 | 15 |
| Metoprolol Succinate | 73 | 12 |
| Furosemide | 70 | — |
| Lovastatin | 68 | 11 |
| Apixabanbrand: Eliquis | 60 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-09
- Last updated
- 2008-06-02
Frequently asked questions
- What is Michael Zaslow's NPI number?
- Michael Zaslow's National Provider Identifier (NPI) is 1588662985, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Zaslow's specialty?
- Michael Zaslow is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Zaslow located?
- Michael Zaslow's practice location on file with NPPES is 955 Main Street, Winchester, MA 01890-1961.
- What is Michael Zaslow's phone number?
- The practice phone number listed in the NPPES registry for Michael Zaslow is (781) 729-8070.
- Does Michael Zaslow accept Medicare?
- Michael Zaslow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Zaslow's NPI active?
- Yes — Michael Zaslow's NPI (1588662985) is active in the NPPES registry as of the last update on 2008-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.