Quick answers
- Does Sudha Karupaiah accept Medicare assignment?
- Yes. Medicare's clinician data says Sudha Karupaiah 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 Karupaiah see?
- In 2024, CMS data shows 429 Original Medicare patients and 1,239 services for Sudha Karupaiah. This counts Original Medicare only and measures volume, not quality.
- What is Sudha Karupaiah's NPI number?
- 1316984800. 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 Karupaiah, 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 | 429 |
|---|---|
| Services billed to Medicare | 1,239 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)968 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)79 services
- Sleep study in sleep lab (6 years or older) (95810)63 services
- Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)42 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)20 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%
- Diabetes40%
- Arthritis37%
- Ischemic heart disease34%
- Atrial fibrillation24%
Hospitals where Sudha Karupaiah works
Medicare's Facility Affiliation Data lists Sudha Karupaiah at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050380
Practice locations
Addresses where Sudha Karupaiah is enrolled with Medicare (CMS data updated October 2, 2026).
- 65 N 14th StSan Jose, CA 95112 (408) 279‑1400
Specialties
- Sleep Medicineprimary
Other sleep medicine doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1316984800 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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