Louis Berk, M.D.
NPI 1730501875 · Family Medicine Physician · Acton, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Berk, M.D. is a Family Medicine Physician provider in Acton, MA (NPI 1730501875).
Provider details
- NPI number
- 1730501875
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 142888 (CA)
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
12 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
1,794 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 | 306 | $141 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 265 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 220 | $100 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 176 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 165 | $10 |
| 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'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 315 | 106 |
| Lisinopril | 167 | 59 |
| Amlodipine Besylate | 150 | 49 |
| Losartan Potassium | 143 | 46 |
| Hydrochlorothiazide | 136 | 47 |
| Rosuvastatin Calcium | 78 | 25 |
| Simvastatin | 61 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-01-08
- Last updated
- 2020-06-12
- Certified
- 2020-06-12
Frequently asked questions
- What is Louis Berk's NPI number?
- Louis Berk's National Provider Identifier (NPI) is 1730501875, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Berk's specialty?
- Louis Berk is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Berk located?
- Louis Berk's practice location on file with NPPES is 321 Main St, Acton, MA 01720-3799.
- What is Louis Berk's phone number?
- The practice phone number listed in the NPPES registry for Louis Berk is (978) 635-8700.
- Does Louis Berk accept Medicare?
- Louis Berk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Berk's NPI active?
- Yes — Louis Berk's NPI (1730501875) is active in the NPPES registry as of the last update on 2020-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.