Sumathi Chellappa, MD
NPI 1649479551 · Family Medicine Physician · Ames, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sumathi Chellappa, MD is a Family Medicine Physician provider in Ames, IA (NPI 1649479551).
Provider details
- NPI number
- 1649479551
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 38122 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,930 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 494 | $118 |
| 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'SG2211 | 360 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 333 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 224 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 211 | $13 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 89 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 236 | 62 |
| Levothyroxine Sodium | 192 | 43 |
| Losartan Potassium | 158 | 36 |
| Amlodipine Besylate | 153 | 35 |
| Lisinopril | 152 | 31 |
| Omeprazole | 144 | 35 |
| Simvastatin | 114 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-12
- Last updated
- 2020-11-11
- Certified
- 2020-11-11
Frequently asked questions
- What is Sumathi Chellappa's NPI number?
- Sumathi Chellappa's National Provider Identifier (NPI) is 1649479551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sumathi Chellappa's specialty?
- Sumathi Chellappa is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sumathi Chellappa located?
- Sumathi Chellappa's practice location on file with NPPES is 3815 Stange Rd, Ames, IA 50010-3914.
- What is Sumathi Chellappa's phone number?
- The practice phone number listed in the NPPES registry for Sumathi Chellappa is (515) 956-4050.
- Does Sumathi Chellappa accept Medicare?
- Sumathi Chellappa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sumathi Chellappa's NPI active?
- Yes — Sumathi Chellappa's NPI (1649479551) is active in the NPPES registry as of the last update on 2020-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.