Quick answers
- Does Leonard J. Medeiros accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard J. Medeiros accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Leonard J. Medeiros see?
- In 2024, CMS data shows 189 Original Medicare patients and 666 services for Leonard J. Medeiros. This counts Original Medicare only and measures volume, not quality.
- What is Leonard J. Medeiros's NPI number?
- 1609979335. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Leonard J. Medeiros, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 189 |
|---|---|
| Services billed to Medicare | 666 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)155 services
- Surgical pathology consultation and report on referred slides prepared elsewhere (88321)84 services
- Bone marrow, smear interpretation (85097)77 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)72 services
- Special stained specimen slides to examine tissue, initial procedure (88342)71 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol71%
- Arthritis54%
- Anxiety34%
- Chronic kidney disease33%
- Diabetes32%
Practice locations
Addresses where Leonard J. Medeiros is enrolled with Medicare (CMS data updated October 2, 2026).
- 1515 Holcombe BlvdHouston, TX 77030 (713) 792‑6127
Group practices
Medicare enrollment lists Leonard J. Medeiros as a member of this group (CMS data updated October 2, 2026).
- Physicians Referral Service2,765 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Physicians Referral Service
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 1980 (46 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609979335 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians