Dr. Sandra M. Herrmann, MD

  • Rochester, MN
  • Nephrologist
NPI1790964088PAC ID1850447012
Medicare services, 2024
176
Medicare patients, 2024
90
Part D claims, 2024
52
Publications
101
Hospital affiliations
2
Practice address
1216 Second Street Southwest, Rochester, MN 55902
Practice phone
Call (507) 255-5123
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mayo Clinic Hospital, Saint Marys Campus

Hospital · Rochester, Minnesota

See all 6 affiliations

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Dr. Sandra M. Herrmann is a nephrologist in Rochester, Minnesota

Dr. Herrmann practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.

Dr. Herrmann's NPI, 1790964088, was assigned on November 2, 2007. Dr. Herrmann holds Minnesota license 51936.

NPI and contact details
Medicare PAC ID
1850447012
NPI enumeration date
November 2, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(507) 255-5123
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
55
Medical school graduation
1997

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Sandra M. Herrmann practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota

Dr. Herrmann'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.

Source: Dmand AI Affiliation Data

Dr. Sandra M. Herrmann is affiliated with 3 sites of care and 3 medical groups

Dr. Herrmann's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dr. Herrmann is also affiliated with Mayo Clinic Health System in Cannon Falls. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Herrmann to 2 more medical groups and 1 hospice, each named with a free account.

See all 6 affiliations for Dr. Herrmann

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Sandra M. Herrmann's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herrmann practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mayo Clinic Hospital, Saint Marys CampusAvailable with a free account
+2 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Sandra M. Herrmann is one of 213 nephrologists in Minnesota

Nephrology is Dr. Herrmann's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Herrmann is licensed in Minnesota.

Specialties and state licenses

  • Nephrology, MinnesotaPrimaryLicense 51936 · taxonomy 207RN0300X

Nephrologists near Dr. Herrmann

Counts of nephrologists 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. Sandra M. Herrmann billed Medicare for 176 services in 2024

CMS data shows 176 Medicare services from Dr. Herrmann across 3 procedure codes in 2024, for 90 Medicare patients. Medicare paid $7,786 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024176
Medicare patients90
Paid by Medicare$7,786
Procedure codes3

Dr. Herrmann's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2222024: 13937%
Tests and treatments
2023: 472024: 3721%

Dr. Herrmann compared with the Minnesota median for nephrologists, 2024

  • Dr. Herrmann
  • Minnesota median
Medicare services
176vs 49364% below
Medicare patients
90vs 18551% below
Part D claims
13vs 37297% below

Medians across 200 nephrologists in Minnesota with Dmand AI profiles that report each measure.

Dr. Herrmann'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.

See all procedures by Dr. Herrmann

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Sandra M. Herrmann treated 90 Medicare patients in 2024, average age 71

CMS counts 90 Medicare patients who saw Dr. Herrmann in 2024. The largest group is 65 to 74, with 45 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 4.84, 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. Herrmann's median patient age at 70, with 47% women.

Medicare patients, 202490
Average age71
Average risk score4.84
Also on Medicaid13%

Dr. Herrmann's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Herrmann's Medicare patients by sex, 2024

  • Women3640%
  • Men5460%

Chronic conditions among Dr. Herrmann's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes49%
  5. Heart failure49%
  6. Ischemic heart disease44%
  7. Arthritis40%
  8. Atrial fibrillation37%

Share of Medicare patients with each condition. A patient can have several.

Dr. Herrmann's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women47%
  • Men53%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Sandra M. Herrmann wrote 52 Medicare Part D claims in 2024

In 2024, Dr. Herrmann wrote 52 Medicare Part D claims for 23 patients. 96% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $65 in total drug cost. In 2021, CMS named 44 claims across 3 drugs.

Part D claims, 202452
Drugs named by CMS1
Total drug cost$65
Part D patients23

Dr. Herrmann's Part D claims by kind of drug, 2024

  • Generic50 claims96%
  • Brand-name and other2 claims4%

Dr. Herrmann'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, 2021 to 2024

  • 2021
  • 2024
Claims for drugs CMS names
2021: 442024: 1370%

Drugs named by CMS: 1 in 2024, 3 in 2021.

See all prescribing by Dr. Herrmann

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

Dr. Sandra M. Herrmann offers telehealth to Medicare patients

Dr. Herrmann accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Herrmann as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Sandra M. Herrmann has 101 publications on record

Dmand AI links 101 papers to Dr. Herrmann, published from 2011 to 2025. 2021 was the busiest year, with 11. The most frequent topics are Acute Kidney Injury, Kidney and Renal Artery Obstruction. Dr. Herrmann has published most often in Kidney Int Rep. Dr. Herrmann's most frequent co-authors are Nelson Leung, MD, Latonya J. Hickson, MD and Meghan E. Sise, MD.

Papers101
Years published2011 to 2025

Dr. Herrmann's papers by year, 2016 to 2025

Topics Dr. Herrmann writes about most

  • Acute Kidney Injury
  • Kidney
  • Renal Artery Obstruction
  • Glomerular Filtration Rate
  • Immune Checkpoint Inhibitors
  • Hypertension
  • Nephritis, Interstitial
  • Renal Circulation

Dr. Herrmann's most frequent co-authors

Recent publications by Dr. Herrmann

See all 101 publications and co-authors

See who Dr. Herrmann researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Herrmann works with, so you can find a warm path to the right nephrologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Sources for Dr. Sandra M. Herrmann's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Sandra M. Herrmann

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. Sandra M. Herrmann's NPI number?

Dr. Sandra M. Herrmann's NPI number is 1790964088. It was assigned on November 2, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Sandra M. Herrmann?

Dr. Sandra M. Herrmann is a nephrologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).

Where does Dr. Sandra M. Herrmann practice?

Dr. Herrmann practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Herrmann's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Herrmann to 2 medical groups and 1 hospice.

What is Dr. Sandra M. Herrmann's office phone number?

The practice phone on file for Dr. Herrmann is (507) 255-5123.

What is Dr. Sandra M. Herrmann's medical license number?

Dr. Herrmann holds Minnesota license 51936.

Which hospitals is Dr. Sandra M. Herrmann affiliated with?

Dr. Herrmann practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota. Dr. Herrmann is also affiliated with Mayo Clinic Health System in Cannon Falls.

What medical group is Dr. Sandra M. Herrmann part of?

Dr. Herrmann is linked to Mayo Clinic. Dmand AI links Dr. Herrmann to 2 more medical groups.

Does Dr. Sandra M. Herrmann accept Medicare?

Yes. CMS data shows Dr. Herrmann billed Medicare for 176 services in 2024, and Dr. Herrmann accepts Medicare assignment.

Does Dr. Sandra M. Herrmann offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Herrmann as offering telehealth services.

How many Medicare patients does Dr. Sandra M. Herrmann see?

CMS counts 90 Medicare patients who saw Dr. Herrmann in 2024, with an average age of 71.

Show 5 more questionsShow fewer questions

What services does Dr. Sandra M. Herrmann bill to Medicare?

In 2024, Dr. Herrmann's most billed Medicare services were hospital inpatient care (99231), dialysis (90935) and hospital inpatient care (99221).

What drugs does Dr. Sandra M. Herrmann prescribe most?

In 2024 Medicare Part D data, Dr. Herrmann's most prescribed drugs by claims were Prednisone.

How long has Dr. Sandra M. Herrmann been practicing?

Dr. Herrmann graduated from medical school in 1997, 29 years ago.

Does Dr. Sandra M. Herrmann do research?

Dmand AI links 101 publications to Dr. Herrmann, published from 2011 to 2025.

Who does Dr. Sandra M. Herrmann publish with?

Dr. Herrmann's most frequent co-authors are Nelson Leung, MD (15 shared papers), Latonya J. Hickson, MD (12 shared papers) and Meghan E. Sise, MD (10 shared papers).

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