Quick answers
- Does Nasser Nasseri Asl accept Medicare assignment?
- Yes. Medicare's clinician data says Nasser Nasseri Asl 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 Nasser Nasseri Asl see?
- In 2024, CMS data shows 876 Original Medicare patients and 218,206 services for Nasser Nasseri Asl. This counts Original Medicare only and measures volume, not quality.
- What is Nasser Nasseri Asl's NPI number?
- 1437119047. 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 Nasser Nasseri Asl, 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 | 876 |
|---|---|
| Services billed to Medicare | 218,206 |
| Different services or procedures | 106 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, tocilizumab, 1 mg (J3262)50,800 services
- Injection, golimumab, 1 mg, for intravenous use (J1602)29,260 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)14,000 services
- Hyaluronan or derivative, gelsyn-3, for intra-articular injection, 0.1 mg (J7328)12,098 services
- Injection, methylprednisolone acetate, 1 mg (J1010)11,783 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 cholesterol75%
- Arthritis75%
- Diabetes33%
- Osteoporosis30%
- Anxiety26%
Practice locations
Addresses where Nasser Nasseri Asl is enrolled with Medicare (CMS data updated October 2, 2026).
- 700 Geipe Rd, Suite 200Catonsville, MD 21228 (410) 744‑0661
Group practices
Medicare enrollment lists Nasser Nasseri Asl as a member of this group (CMS data updated October 2, 2026).
- Nasseri Clinic of Arthritic and Rheumatic Diseases LLC9 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 Nasseri Clinic of Arthritic and Rheumatic Diseases LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437119047 |
| 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