William Maher, M.D.
NPI 1194835637 · Internal Medicine Physician · Newton Lower Falls, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Maher, M.D. is a Internal Medicine Physician provider in Newton Lower Falls, MA (NPI 1194835637).
Provider details
- NPI number
- 1194835637
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 78946 (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
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
1,674 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 | 374 | $139 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 302 | $141 |
| 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 | 229 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 217 | $99 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 119 | $21 |
| Annual Alcohol Misuse Screening, 5 to 15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 621 | 185 |
| Lisinopril | 369 | 106 |
| Amlodipine Besylate | 303 | 92 |
| Metoprolol Succinate | 220 | 65 |
| Losartan Potassium | 214 | 65 |
| Levothyroxine Sodium | 162 | 45 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2008-05-14
Frequently asked questions
- What is William Maher's NPI number?
- William Maher's National Provider Identifier (NPI) is 1194835637, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Maher's specialty?
- William Maher is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Maher located?
- William Maher's practice location on file with NPPES is 2000 Washington St, Newton Lower Falls, MA 02462-1650.
- What is William Maher's phone number?
- The practice phone number listed in the NPPES registry for William Maher is (617) 964-5020.
- Does William Maher accept Medicare?
- William Maher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Maher's NPI active?
- Yes — William Maher's NPI (1194835637) is active in the NPPES registry as of the last update on 2008-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.