William Friedman, M.D.
NPI 1427015379 · Family Medicine Physician · Westminster, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Friedman, M.D. is a Family Medicine Physician provider in Westminster, MA (NPI 1427015379).
Provider details
- NPI number
- 1427015379
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 46095 (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
38 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $79 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 15 | $204 |
Typical Medicare-allowed amounts for these services range $79–$204 (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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 75 | 38 |
| Amlodipine Besylate | 69 | 25 |
| Lovastatin | 63 | 26 |
| Hydrochlorothiazide | 61 | 31 |
| Metformin Hclbrand: Metformin Hcl Er | 50 | 19 |
| Levothyroxine Sodium | 50 | 16 |
| Atorvastatin Calcium | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Friedman's NPI number?
- William Friedman's National Provider Identifier (NPI) is 1427015379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Friedman's specialty?
- William Friedman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Friedman located?
- William Friedman's practice location on file with NPPES is 116 Main St, Westminster, MA 01473-1444.
- What is William Friedman's phone number?
- The practice phone number listed in the NPPES registry for William Friedman is (978) 874-0535.
- Does William Friedman accept Medicare?
- William Friedman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Friedman's NPI active?
- Yes — William Friedman's NPI (1427015379) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.