Quick answers
- Does Vallikantha Nellaiappan accept Medicare assignment?
- Yes. Medicare's clinician data says Vallikantha Nellaiappan 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 Vallikantha Nellaiappan see?
- In 2024, CMS data shows 155 Original Medicare patients and 565 services for Vallikantha Nellaiappan. This counts Original Medicare only and measures volume, not quality.
- What is Vallikantha Nellaiappan's NPI number?
- 1548557812. 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 Vallikantha Nellaiappan, 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 | 155 |
|---|---|
| Services billed to Medicare | 565 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)150 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)95 services
- Blood glucose (sugar) test performed by hand-held instrument (82962)80 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)56 services
- Hemoglobin a1c level (83036)34 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%
- High blood pressure74%
- Arthritis49%
- Diabetes45%
- Osteoporosis41%
- Chronic kidney disease39%
Hospitals where Vallikantha Nellaiappan works
Medicare's Facility Affiliation Data lists Vallikantha Nellaiappan 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.
- Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520138
- West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520139
Practice locations
Addresses where Vallikantha Nellaiappan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1055 N Mayfair RdWauwatosa, WI 53226 (414) 476‑8450
- 2801 W Kinnickinnic River PkwyMilwaukee, WI 53215 (414) 385‑8600
- 4448 W Loomis RdGreenfield, WI 53220 (414) 281‑5150
Group practices
Medicare enrollment lists Vallikantha Nellaiappan as a member of these groups (CMS data updated October 2, 2026).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Aurora Advanced Healthcare, Inc.1,124 clinicians in the group
- Lakeshore Medical Clinic LLC379 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Wauwatosa
Clinicians with the same Medicare primary specialty in Wauwatosa, WI — not a recommendation.
Other clinicians in Aurora Medical Group, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 (18 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) | 1548557812 |
| 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