Nathan Daniel Gundacker, BS
- Medicare services, 2021
- 25
- Part D claims, 2024
- 61
- MIPS score, 2024
- 88
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Practice phone
- Call (414) 805-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Nathan Daniel Gundacker is an infectious disease specialist in Milwaukee, Wisconsin
Nathan Gundacker practices at Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health.
Nathan Gundacker's NPI, 1952690133, was assigned on March 28, 2011. Nathan Gundacker graduated from University of Wisconsin School of Medicine in 2011. Nathan Gundacker holds Wisconsin license 67678.
- NPI
- 1952690133NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537476072
- NPI enumeration date
- March 28, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (414) 805-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan Daniel Gundacker practices at Froedtert Hospital in Milwaukee, Wisconsin
Nathan Gundacker's primary practice is Froedtert Hospital, at 9200 W Wisconsin Ave, Milwaukee, WI 53226 in Milwaukee County. The practice phone is (414) 805-3000.
- Froedtert Hospital9200 W Wisconsin Ave, Milwaukee, WI 53226 · Milwaukee CountyPhone(414) 805-3000
Source: Dmand AI Affiliation Data
Nathan Daniel Gundacker is affiliated with 1 site of care and 2 medical groups
Nathan Gundacker's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. The medical group on file is Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI also links Nathan Gundacker to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Nathan Daniel Gundacker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Gundacker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Froedtert Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Nathan Daniel Gundacker is one of 154 infectious disease specialists in Wisconsin
Infectious disease is Nathan Gundacker's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dmand AI has Nathan Gundacker's licenses on file in 2 states: Wisconsin and Alabama.
Specialties and state licenses
- Infectious disease, WisconsinPrimary
- Internal medicine, Alabama
Infectious disease specialists near Nathan Gundacker
Counts of infectious disease specialists 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
Nathan Daniel Gundacker billed Medicare for 25 services in 2021
CMS data shows 25 Medicare services from Nathan Gundacker across 1 procedure code in 2021. Medicare paid $1,926 for them. Every service was in a facility, such as a hospital, rather than an office.
Nathan Gundacker's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1072021: 2577%
Nathan Gundacker compared with the Wisconsin median for infectious disease specialists, 2021
- Nathan Gundacker
- Wisconsin median
- Medicare services
- 25vs 19787% below
- Part D claims
- 13vs 15592% below
Medians across 148 infectious disease specialists in Wisconsin with Dmand AI profiles that report each measure.
Nathan Gundacker's most billed Medicare procedure codes, 2021
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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Medicare shows one payer. Book a meeting to get commercial claims data for Nathan Gundacker and other infectious disease specialists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Nathan Daniel Gundacker's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Nathan Gundacker's median patient age at 54, with 57% women.
Nathan Gundacker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
Nathan Daniel Gundacker wrote 61 Medicare Part D claims in 2024
In 2024, Nathan Gundacker wrote 61 Medicare Part D claims for 30 patients. 33% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $2,068 in total drug cost. In 2019, CMS named 39 claims across 2 drugs.
Nathan Gundacker's Part D claims by kind of drug, 2024
- Generic20 claims33%
- Brand-name41 claims67%
Nathan Gundacker'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 Nathan Gundacker's Part D claims, 2024
- Antibiotics18%11 of 61 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, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 392024: 1367%
Drugs named by CMS: 1 in 2024, 2 in 2019.
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
Nathan Daniel Gundacker scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Nathan Gundacker for performance year 2024, reported as part of a group. Nathan Gundacker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Nathan Gundacker's MIPS scores, performance year 2024
- 88of 100Final score
- 82.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Nathan Daniel Gundacker graduated from University of Wisconsin School of Medicine
Nathan Gundacker graduated from University of Wisconsin School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Nathan Daniel Gundacker'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (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 Nathan Daniel Gundacker
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What is Nathan Daniel Gundacker's NPI number?
Nathan Daniel Gundacker's NPI number is 1952690133. It was assigned on March 28, 2011, and it is active in the NPI Registry.
What does Nathan Daniel Gundacker specialize in?
Nathan Daniel Gundacker is an infectious disease specialist in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Nathan Daniel Gundacker practice?
Nathan Gundacker practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. Nathan Gundacker's primary practice is Froedtert Hospital in Milwaukee, Wisconsin, part of Froedtert ThedaCare Health. Dmand AI also links Nathan Gundacker to 1 medical group.
What is Nathan Daniel Gundacker's office phone number?
The practice phone on file for Nathan Gundacker is (414) 805-3000.
What is Nathan Daniel Gundacker's medical license number?
Nathan Gundacker holds Wisconsin license 67678, one of the licenses on file in 2 states.
Which states has Nathan Daniel Gundacker been licensed in?
Dmand AI has state licenses on file for Nathan Gundacker in Wisconsin and Alabama.
Which hospitals is Nathan Daniel Gundacker affiliated with?
Nathan Gundacker practices at Froedtert Hospital in Milwaukee, Wisconsin.
What medical group is Nathan Daniel Gundacker part of?
Nathan Gundacker is linked to Froedtert & the Medical College of Wisconsin Community Physicians. Dmand AI links Nathan Gundacker to 1 more medical group.
Does Nathan Daniel Gundacker accept Medicare?
Yes. CMS data shows Nathan Gundacker billed Medicare for 25 services in 2021, and Nathan Gundacker accepts Medicare assignment.
What is Nathan Daniel Gundacker's MIPS score?
Nathan Gundacker's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
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What services does Nathan Daniel Gundacker bill to Medicare?
In 2021, Nathan Gundacker's most billed Medicare services were hospital inpatient care (99233).
Where did Nathan Daniel Gundacker go to medical school?
Nathan Gundacker graduated from University of Wisconsin School of Medicine in 2011.
What drugs does Nathan Daniel Gundacker prescribe most?
In 2024 Medicare Part D data, Nathan Gundacker's most prescribed drugs by claims were Typhim Vi.
How long has Nathan Daniel Gundacker been practicing?
Nathan Gundacker graduated from medical school in 2011, 15 years ago.
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