Dr. Ruth E. Defoster, MD
- Medicare services, 2024
- 252
- Medicare patients, 2024
- 107
- Part D claims, 2024
- 82
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 1216 Second Street Southwest, Rochester, MN 55902
- Practice phone
- Call (507) 255-5123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Ruth E. Defoster is a hospitalist in Rochester, Minnesota
Dr. Defoster practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.
Dr. Defoster's NPI, 1558624700, was assigned on June 22, 2012. Dr. Defoster graduated from Michigan State University College of Human Medicine in 2012. Dr. Defoster holds Minnesota license 56481.
- NPI
- 1558624700NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678719713
- NPI enumeration date
- June 22, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 255-5123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruth E. Defoster practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota
Dr. Defoster's primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.
- Mayo Clinic Hospital, Saint Marys Campus1216 Second Street Southwest, Rochester, MN 55902 · Olmsted CountyPhone(507) 255-5123
Source: Dmand AI Affiliation Data
Dr. Ruth E. Defoster is affiliated with 2 sites of care and 1 medical group
Dr. Defoster's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Defoster to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ruth E. Defoster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Defoster practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital, Saint Marys Campus | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruth E. Defoster is one of 357 hospitalists in Minnesota
Hospitalist is Dr. Defoster's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Defoster is licensed in Minnesota.
Specialties and state licenses
- Hospitalist, MinnesotaPrimary
Hospitalists near Dr. Defoster
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. Ruth E. Defoster billed Medicare for 252 services in 2024
CMS data shows 252 Medicare services from Dr. Defoster across 6 procedure codes in 2024, for 107 Medicare patients. Medicare paid $19,211 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Defoster's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3212024: 25221%
Dr. Defoster compared with the Minnesota median for hospitalists, 2024
- Dr. Defoster
- Minnesota median
- Medicare services
- 252vs 2769% below
- Medicare patients
- 107vs 13118% below
- Part D claims
- 22vs 7370% below
Medians across 344 hospitalists in Minnesota with Dmand AI profiles that report each measure.
Dr. Defoster's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ruth E. Defoster treated 107 Medicare patients in 2024, average age 72
CMS counts 107 Medicare patients who saw Dr. Defoster in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 3.52, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Defoster's median patient age at 74, with 40% women.
Dr. Defoster's Medicare patients by age, 2024
Dr. Defoster's Medicare patients by sex, 2024
- Women5551%
- Men5249%
Chronic conditions among Dr. Defoster's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease63%
- Diabetes53%
- Mood disorders52%
- Arthritis51%
- Heart failure51%
- Ischemic heart disease50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Defoster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women40%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ruth E. Defoster wrote 82 Medicare Part D claims in 2024
In 2024, Dr. Defoster wrote 82 Medicare Part D claims for 22 patients. 68% of them were for generic drugs. CMS names the drug for 22 of them, across 1 drug with 11 or more claims each, at $8,584 in total drug cost. In 2022, CMS named 12 claims across 1 drug.
Dr. Defoster's Part D claims by kind of drug, 2024
- Generic56 claims68%
- Brand-name26 claims32%
Dr. Defoster'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.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 122024: 2283%
Drugs named by CMS: 1 in 2024, 1 in 2022.
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
How Dr. Ruth E. Defoster takes part in Medicare
Dr. Defoster accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ruth E. Defoster graduated from Michigan State University College of Human Medicine
Dr. Defoster graduated from Michigan State University College of Human Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ruth E. Defoster'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Ruth E. Defoster
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What is Dr. Ruth E. Defoster's NPI number?
Dr. Ruth E. Defoster's NPI number is 1558624700. It was assigned on June 22, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruth E. Defoster?
Dr. Ruth E. Defoster is a hospitalist in Rochester, Minnesota. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Ruth E. Defoster practice?
Dr. Defoster practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Defoster's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Defoster to 1 hospice.
What is Dr. Ruth E. Defoster's office phone number?
The practice phone on file for Dr. Defoster is (507) 255-5123.
What is Dr. Ruth E. Defoster's medical license number?
Dr. Defoster holds Minnesota license 56481.
Which hospitals is Dr. Ruth E. Defoster affiliated with?
Dr. Defoster practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota.
What medical group is Dr. Ruth E. Defoster part of?
Dr. Defoster is linked to Mayo Clinic.
Does Dr. Ruth E. Defoster accept Medicare?
Yes. CMS data shows Dr. Defoster billed Medicare for 252 services in 2024, and Dr. Defoster accepts Medicare assignment.
How many Medicare patients does Dr. Ruth E. Defoster see?
CMS counts 107 Medicare patients who saw Dr. Defoster in 2024, with an average age of 72.
What services does Dr. Ruth E. Defoster bill to Medicare?
In 2024, Dr. Defoster's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Show 3 more questionsShow fewer questions
Where did Dr. Ruth E. Defoster go to medical school?
Dr. Defoster graduated from Michigan State University College of Human Medicine in 2012.
What drugs does Dr. Ruth E. Defoster prescribe most?
In 2024 Medicare Part D data, Dr. Defoster's most prescribed drugs by claims were Eliquis.
How long has Dr. Ruth E. Defoster been practicing?
Dr. Defoster graduated from medical school in 2012, 14 years ago.
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