Quick answers
- Which hospitals does Sumathi Chellappa work at?
- Medicare's official clinician data lists Sumathi Chellappa at 1 hospital: Mary Greeley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sumathi Chellappa see patients?
- Medicare's clinician data lists 4 practice locations, including Ames, IA and Story City, IA. Call before your visit to confirm the address.
- What is Sumathi Chellappa's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Sumathi Chellappa accept Medicare assignment?
- Yes. Medicare's clinician data says Sumathi Chellappa accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Sumathi Chellappa?
- (515) 239-4400, as listed in official Medicare / NPI Registry data.
- What is Sumathi Chellappa's NPI number?
- 1649479551. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sumathi Chellappa works
Medicare's Facility Affiliation Data lists Sumathi Chellappa at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · CCN 160030
Practice locations
Addresses where Sumathi Chellappa is enrolled with Medicare (CMS data updated 2026-10-02).
- 1015 Duff AveAmes, IA 50010 (515) 239‑4400
- 1215 Duff AveAmes, IA 50010 (515) 239‑4400
- 3500 University Blvd, Suite 1001Ames, IA 50010 (515) 239‑3040
- 705 8th StStory City, IA 50248 (515) 733‑5191
Group practices
Medicare enrollment lists Sumathi Chellappa as a member of this group (CMS data updated 2026-10-02).
- McFarland Clinic PC363 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Ames
Clinicians with the same Medicare primary specialty in Ames, IA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649479551 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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