Dr. Umashankar Subramaniam, MD
- Part D claims, 2024
- 87
- Hospital affiliations
- 2
- Industry payments
- $89
- Medical groups
- 2
- State licenses
- 2
- Practice address
- 1000 Fourth Street SW, Mason City, IA 50401
- Practice phone
- Call (641) 428-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Subramaniam's professional email, personal email and mobile number
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Dr. Umashankar Subramaniam is a hospitalist in Mason City, Iowa
Dr. Subramaniam practices at MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health.
Dr. Subramaniam's NPI, 1487768032, was assigned on August 19, 2006. Dr. Subramaniam holds Iowa license MD-36760.
- NPI
- 1487768032NPI Registry (opens in a new tab)
- NPI enumeration date
- August 19, 2006
- NPI status
- Active
- Practice phone
- (641) 428-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Umashankar Subramaniam practices at MercyOne North Iowa Medical Center in Mason City, Iowa
Dr. Subramaniam's primary practice is MercyOne North Iowa Medical Center, at 1000 Fourth Street SW, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 428-7000.
- MercyOne North Iowa Medical Center1000 Fourth Street SW, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 428-7000
Source: Dmand AI Affiliation Data
Dr. Umashankar Subramaniam is affiliated with 3 sites of care and 2 medical groups
Dr. Subramaniam's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. The medical group on file is Mayo Clinic Health System in Mankato. Dmand AI also links Dr. Subramaniam to 1 more hospital, 1 hospice and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Umashankar Subramaniam's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Subramaniam practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne North Iowa Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Umashankar Subramaniam is one of 262 hospitalists in Iowa
Hospitalist is Dr. Subramaniam's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Subramaniam's licenses on file in 2 states: Iowa and Illinois.
Specialties and state licenses
- Hospitalist, IowaPrimary
- Pediatrics, Illinois
Hospitalists near Dr. Subramaniam
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Umashankar Subramaniam's patients have a median age of 28
Across all payers, Dmand AI patient panel data puts Dr. Subramaniam's median patient age at 28, with 47% women.
Dr. Subramaniam's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 28
Patient panel by sex, all payers
- Women47%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Umashankar Subramaniam wrote 87 Medicare Part D claims in 2024
In 2024, Dr. Subramaniam wrote 87 Medicare Part D claims for 55 patients. 92% of them were for generic drugs. CMS names the drug for 21 of them, across 1 drug with 11 or more claims each, at $75 in total drug cost. In 2021, CMS named 11 claims across 1 drug.
Dr. Subramaniam's Part D claims by kind of drug, 2024
- Generic80 claims92%
- Brand-name and other7 claims8%
Dr. Subramaniam's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Subramaniam's Part D claims, 2024
- Antibiotics48%42 of 87 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 112024: 2191%
Drugs named by CMS: 1 in 2024, 1 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Umashankar Subramaniam received $89 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Subramaniam from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Kowa Pharmaceuticals America, Inc. paid the most, $89.
Companies that paid Dr. Subramaniam the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Umashankar Subramaniam's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Umashankar Subramaniam
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Umashankar Subramaniam's NPI number?
Dr. Umashankar Subramaniam's NPI number is 1487768032. It was assigned on August 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Umashankar Subramaniam?
Dr. Umashankar Subramaniam is a hospitalist in Mason City, Iowa. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Umashankar Subramaniam practice?
Dr. Subramaniam practices at 1000 Fourth Street SW, Mason City, IA 50401. Dr. Subramaniam's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Subramaniam to 1 hospital, 1 hospice and 1 medical group.
What is Dr. Umashankar Subramaniam's office phone number?
The practice phone on file for Dr. Subramaniam is (641) 428-7000.
What is Dr. Umashankar Subramaniam's medical license number?
Dr. Subramaniam holds Iowa license MD-36760, one of the licenses on file in 2 states.
Which states has Dr. Umashankar Subramaniam been licensed in?
Dmand AI has state licenses on file for Dr. Subramaniam in Iowa and Illinois.
Which hospitals is Dr. Umashankar Subramaniam affiliated with?
Dr. Subramaniam practices at MercyOne North Iowa Medical Center in Mason City, Iowa. Dmand AI links Dr. Subramaniam to 1 more hospital.
What medical group is Dr. Umashankar Subramaniam part of?
Dr. Subramaniam is linked to Mayo Clinic Health System in Mankato. Dmand AI links Dr. Subramaniam to 1 more medical group.
What drugs does Dr. Umashankar Subramaniam prescribe most?
In 2024 Medicare Part D data, Dr. Subramaniam's most prescribed drugs by claims were Amoxicillin.
Has Dr. Umashankar Subramaniam received payments from drug or device companies?
CMS Open Payments shows $89 in general payments to Dr. Subramaniam from 1 company from 2019 to 2019. The largest total came from Kowa Pharmaceuticals America, Inc.
How long has Dr. Umashankar Subramaniam been practicing?
Dr. Subramaniam's NPI was assigned in 2006.
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