Grzegorz Majcher, M.D.
NPI 1003849233 · Specialist · Torrance, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grzegorz Majcher, M.D. is a Specialist provider in Torrance, CA (NPI 1003849233).
Provider details
- NPI number
- 1003849233
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A54351 (CA)
Specialties & taxonomies
Other Service Providers
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
2,539 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,622 | $122 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 453 | $194 |
| Critical Care, First 30-74 Minutes99291 | 114 | $217 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $138 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 68 | $368 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 59 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 53 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 122 | 35 |
| Atorvastatin Calcium | 90 | 27 |
| Doxazosin Mesylate | 87 | 27 |
| Furosemide | 86 | 25 |
| Losartan Potassium | 77 | 24 |
| Lisinopril | 67 | 24 |
| Amlodipine Besylate | 62 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-09
- Last updated
- 2007-07-09
Frequently asked questions
- What is Grzegorz Majcher's NPI number?
- Grzegorz Majcher's National Provider Identifier (NPI) is 1003849233, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grzegorz Majcher's specialty?
- Grzegorz Majcher is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Grzegorz Majcher located?
- Grzegorz Majcher's practice location on file with NPPES is 3858 W Carson St, Torrance, CA 90503-6709.
- What is Grzegorz Majcher's phone number?
- The practice phone number listed in the NPPES registry for Grzegorz Majcher is (310) 316-1015.
- Does Grzegorz Majcher accept Medicare?
- Grzegorz Majcher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grzegorz Majcher's NPI active?
- Yes — Grzegorz Majcher's NPI (1003849233) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.