Quick answers
- Does Alan K. Matsumoto accept Medicare assignment?
- Yes. Medicare's clinician data says Alan K. Matsumoto 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 Alan K. Matsumoto see?
- In 2024, CMS data shows 1,266 Original Medicare patients and 192,940 services for Alan K. Matsumoto. This counts Original Medicare only and measures volume, not quality.
- What is Alan K. Matsumoto's NPI number?
- 1043219298. 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 Alan K. Matsumoto, 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 | 1,266 |
|---|---|
| Services billed to Medicare | 192,940 |
| Different services or procedures | 127 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, tocilizumab, 1 mg (J3262)39,720 services
- Injection, romosozumab-aqqg, 1 mg (J3111)32,130 services
- Injection, denosumab, 1 mg (J0897)26,880 services
- Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)13,950 services
- Injection, golimumab, 1 mg, for intravenous use (J1602)13,150 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 cholesterol75%
- Arthritis75%
- High blood pressure73%
- Osteoporosis58%
- Diabetes25%
- Ischemic heart disease20%
Practice locations
Addresses where Alan K. Matsumoto is enrolled with Medicare (CMS data updated October 2, 2026).
- 6410 Rockledge Dr, Suite 600Bethesda, MD 20817
Group practices
Medicare enrollment lists Alan K. Matsumoto as a member of this group (CMS data updated October 2, 2026).
- Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Other clinicians in Suburban/Nrh Medical Rehabilitation Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043219298 |
| 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