Extracorporeal Membrane OxygenationRespiratory InsufficiencyShock, Cardiogenic
Dr. David S. Grenda, MD, PhD
NPI1336344928PAC ID9234379264
- Medicare services, 2024
- 228
- Medicare patients, 2024
- 271
- Publications
- 2
- Hospital affiliations
- 2
- Industry payments
- $95
- Practice address
- 1221 Whipple St, Eau Claire, WI 54703
- Practice phone
- Call (715) 838-3311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grenda's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David S. Grenda is an anesthesiologist in Eau Claire, Wisconsin
Dr. Grenda practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic.
Dr. Grenda's NPI, 1336344928, was assigned on June 15, 2007. Dr. Grenda holds Georgia license 69909.
NPI and contact details
- NPI
- 1336344928NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234379264
- NPI enumeration date
- June 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (715) 838-3311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David S. Grenda practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin
Dr. Grenda's primary practice is Mayo Clinic Health System in Eau Claire, at 1221 Whipple St, Eau Claire, WI 54703 in Eau Claire County. The practice phone is (715) 838-3311.
- Mayo Clinic Health System in Eau Claire1221 Whipple St, Eau Claire, WI 54703 · Eau Claire CountyPhone(715) 838-3311
Source: Dmand AI Affiliation Data
Dr. David S. Grenda is affiliated with 5 sites of care and 9 medical groups
Dr. Grenda's primary practice is Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic. Dr. Grenda is also affiliated with Mayo Clinic Health System in La Crosse. The medical group on file is Mayo Clinic Health System in Eau Claire. Dmand AI also links Dr. Grenda to 8 more medical groups and 3 group practices and clinics, each named with a free account.
Mayo Clinic Health System in La CrosseMayo Clinic Health System in Eau Claire8 medical groupsNames with a free account3 group practices and clinicsNames with a free account
See all 14 affiliations for Dr. GrendaSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David S. Grenda's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenda practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Health System in Eau Claire | Available with a free account |
| +4 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. David S. Grenda is one of 1,001 anesthesiologists in Wisconsin
Anesthesiology is Dr. Grenda's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Grenda is licensed in Georgia.
Specialties and state licenses
- Anesthesiology, GeorgiaPrimary
Anesthesiologists near Dr. Grenda
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
1,001anesthesiologists in Wisconsin31anesthesiologists in Eau Claire22anesthesiologists at Mayo Clinic Health System in Eau Claire
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David S. Grenda billed Medicare for 228 services in 2024
CMS data shows 228 Medicare services from Dr. Grenda across 5 procedure codes in 2024, for 271 Medicare patients. Medicare paid $26,333 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024228
Medicare patients271
Paid by Medicare$26,333
Procedure codes5
Dr. Grenda's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2052024: 1869%
- Anesthesia
- 2023: 272024: 3115%
- Surgery
- 2023: 132024: 1115%
Dr. Grenda compared with the Wisconsin median for anesthesiologists, 2024
- Dr. Grenda
- Wisconsin median
- Medicare services
- 228vs 484.8 times
- Medicare patients
- 271vs 1192.3 times
Medians across 995 anesthesiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Grenda'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.
Need commercial claims for Dr. Grenda?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grenda and other anesthesiologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David S. Grenda treated 271 Medicare patients in 2024, average age 75
CMS counts 271 Medicare patients who saw Dr. Grenda in 2024. The largest group is 75 to 84, with 118 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 2.04, 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. Grenda's median patient age at 65, with 52% women.
Medicare patients, 2024271
Average age75
Average risk score2.04
Also on Medicaid10%
Dr. Grenda's Medicare patients by age, 2024
Dr. Grenda's Medicare patients by sex, 2024
- Women12747%
- Men14453%
Chronic conditions among Dr. Grenda's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease48%
- Heart failure44%
- Diabetes41%
- Anxiety38%
- Chronic kidney disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grenda's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. David S. Grenda takes part in Medicare
Dr. Grenda 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. David S. Grenda has 2 publications on record
Dmand AI links 2 papers to Dr. Grenda. Dr. Grenda's most frequent co-authors are James Marlow Blum, MD, Vanessa Moll, MD and Cindy D. Powell, MD.
Papers2
Dr. Grenda's most frequent co-authors
Recent publications by Dr. Grenda
See who Dr. Grenda researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grenda works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David S. Grenda received $95 in industry payments from 2017 to 2023
CMS Open Payments shows 6 general payments to Dr. Grenda from 4 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $47.
General payments to Dr. Grenda by program year, 2017 to 2023
Companies that paid Dr. Grenda the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David S. Grenda'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. David S. Grenda
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. David S. Grenda's NPI number?
Dr. David S. Grenda's NPI number is 1336344928. It was assigned on June 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. David S. Grenda?
Dr. David S. Grenda is an anesthesiologist in Eau Claire, Wisconsin. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. David S. Grenda practice?
Dr. Grenda practices at 1221 Whipple St, Eau Claire, WI 54703. Dr. Grenda's primary practice is Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin, part of Mayo Clinic. Dmand AI also links Dr. Grenda to 8 medical groups and 3 group practices and clinics.
What is Dr. David S. Grenda's office phone number?
The practice phone on file for Dr. Grenda is (715) 838-3311.
What is Dr. David S. Grenda's medical license number?
Dr. Grenda holds Georgia license 69909.
Which hospitals is Dr. David S. Grenda affiliated with?
Dr. Grenda practices at Mayo Clinic Health System in Eau Claire in Eau Claire, Wisconsin. Dr. Grenda is also affiliated with Mayo Clinic Health System in La Crosse.
What medical group is Dr. David S. Grenda part of?
Dr. Grenda is linked to Mayo Clinic Health System in Eau Claire. Dmand AI links Dr. Grenda to 8 more medical groups.
Does Dr. David S. Grenda accept Medicare?
Yes. CMS data shows Dr. Grenda billed Medicare for 228 services in 2024, and Dr. Grenda accepts Medicare assignment.
How many Medicare patients does Dr. David S. Grenda see?
CMS counts 271 Medicare patients who saw Dr. Grenda in 2024, with an average age of 75.
What services does Dr. David S. Grenda bill to Medicare?
In 2024, Dr. Grenda's most billed Medicare services were critical care (99291), hospital inpatient care (99233) and anesthesia (00731).
Show 4 more questionsShow fewer questions
Has Dr. David S. Grenda received payments from drug or device companies?
CMS Open Payments shows $95 in general payments to Dr. Grenda from 4 companies from 2017 to 2023. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. David S. Grenda been practicing?
Dr. Grenda graduated from medical school in 2007, 19 years ago.
Does Dr. David S. Grenda do research?
Dmand AI links 2 publications to Dr. Grenda.
Who does Dr. David S. Grenda publish with?
Dr. Grenda's most frequent co-authors are James Marlow Blum, MD (2 shared papers), Vanessa Moll, MD (1 shared paper) and Cindy D. Powell, MD (1 shared paper).
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