Doctor profile · Federal record
Dr. Sumathy Iyengar, M.D.,
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Mason City, IA
- NPI 1013173723
- Accepts Medicare
- 38 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1000 4Th St Sw, Mercy Medical Center-Hospitalist Dept
Mason City, IA 504012800
(641) 428-7000
Credentials & registration
- NPI registered
- August 2008 — 18 yrs on file
- Profile last updated
- August 3, 2020
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- Iowa #39427
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1013173723. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,633
Distinct HCPCS
7
Medicare allowed
$171,080
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 616 | 280 | $111 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 500 | 201 | $74 | |
99239 |
Hospital discharge day management, more than 30 minutes | 270 | 258 | $107 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 183 | 176 | $161 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 28 | 28 | $121 | |
99497 |
Advance care planning, first 30 minutes | 25 | 25 | $71 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $198 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 294. This provider delivers 5.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
227
Patients
185
Total drug cost
$1,528
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Furosemide | Generic | 34 | 21 | $105 |
| Atorvastatin Calcium | Generic | 25 | 15 | $187 |
| Prednisone | Generic | 25 | 25 | $107 |
| Azithromycin | Generic | 21 | 21 | $115 |
| Cephalexin | Generic | 21 | 21 | $164 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 19 | 14 | $217 |
| Cefdinir | Generic | 18 | 18 | $188 |
| Metoprolol Tartrate | Generic | 17 | 15 | $98 |
| Amlodipine Besylate | Generic | 12 | 0 | $60 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 12 | 12 | $111 |
Frequently asked questions
What is Dr. Sumathy Iyengar's medical specialty?
Dr. Sumathy Iyengar practices Hospitalist Physician in Mason City, IA.
Where does Dr. Sumathy Iyengar practice?
Dr. Sumathy Iyengar practices at 1000 4Th St Sw, Mason City, IA 504012800. Office phone: 6414287000.
What is Dr. Sumathy Iyengar's NPI?
Dr. Sumathy Iyengar's National Provider Identifier (NPI) is 1013173723, issued by NPPES.
Does Dr. Sumathy Iyengar accept Medicare assignment?
Yes. Dr. Sumathy Iyengar accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sumathy Iyengar commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.