Quick answers
- Does Sudha Nagalingam accept Medicare assignment?
- Yes. Medicare's clinician data says Sudha Nagalingam 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 Sudha Nagalingam see?
- In 2024, CMS data shows 31 Original Medicare patients and 412 services for Sudha Nagalingam. This counts Original Medicare only and measures volume, not quality.
- What is Sudha Nagalingam's NPI number?
- 1811126303. 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 Sudha Nagalingam, 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 | 31 |
|---|---|
| Services billed to Medicare | 412 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)55 services
- Blood test, comprehensive group of blood chemicals (80053)52 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)50 services
- Hemoglobin a1c level (83036)42 services
- Blood test, lipids (cholesterol and triglycerides) (80061)32 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 cholesterol74%
- High blood pressure65%
- Chronic kidney disease52%
- Depression45%
- Diabetes39%
- Anxiety39%
Practice locations
Addresses where Sudha Nagalingam is enrolled with Medicare (CMS data updated October 2, 2026).
- 320 W Prince RdTucson, AZ 85705 (520) 670‑3909
- 3655 E Grant RdTucson, AZ 85716 (520) 670‑3909
- 6950 E Golf Links RdTucson, AZ 85730 (520) 670‑3909
- 839 W Congress StTucson, AZ 85745 (520) 670‑3909
Group practices
Medicare enrollment lists Sudha Nagalingam as a member of this group (CMS data updated October 2, 2026).
- El Rio Santa Cruz Neighborhood Health Center, Inc.275 clinicians in the group
Specialties
- Internal Medicineprimary
- Infectious Diseasealso
Other internal medicine doctors in Tucson
Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.
Other clinicians in El Rio Santa Cruz Neighborhood Health Center, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811126303 |
| 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