Dr. Justin William Grunewald, MD
- Medicare services, 2024
- 229
- Medicare patients, 2024
- 233
- Part D claims, 2018
- 36
- MIPS score, 2024
- 86
- Hospital affiliations
- 5
- Practice address
- 2250 26th Street Northwest, Owatonna, MN 55060
- Practice phone
- Call (507) 451-3850
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grunewald's professional email, personal email and mobile number
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Dr. Justin William Grunewald is an internist in Owatonna, Minnesota
Dr. Grunewald practices at Owatonna Hospital in Owatonna, Minnesota, part of Sutter Health.
Dr. Grunewald's NPI, 1932514650, was assigned on June 23, 2014. Dr. Grunewald graduated from University of Minnesota Medical School in 2014. Dr. Grunewald holds Minnesota license 59403.
- NPI
- 1932514650NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062719321
- NPI enumeration date
- June 23, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (507) 451-3850
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Justin William Grunewald practices at Owatonna Hospital in Owatonna, Minnesota
Dr. Grunewald's primary practice is Owatonna Hospital, at 2250 26th Street Northwest, Owatonna, MN 55060 in Steele County. The practice phone is (507) 451-3850.
- Owatonna Hospital2250 26th Street Northwest, Owatonna, MN 55060 · Steele CountyPhone(507) 451-3850
Source: Dmand AI Affiliation Data
Dr. Justin William Grunewald is affiliated with 5 sites of care and 1 medical group
Dr. Grunewald's primary practice is Owatonna Hospital in Owatonna, Minnesota, part of Sutter Health. Dr. Grunewald is also affiliated with Abbott Northwestern Hospital. The medical group on file is Buffalo Hospital. Dmand AI also links Dr. Grunewald to 3 more hospitals, 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. Justin William Grunewald's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grunewald practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Owatonna Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justin William Grunewald is one of 2,322 internists in Minnesota
Internal medicine is Dr. Grunewald's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Grunewald is licensed in Minnesota.
Specialties and state licenses
- Internal medicine, MinnesotaPrimary
Internists near Dr. Grunewald
Counts of internists 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. Justin William Grunewald billed Medicare for 229 services in 2024
CMS data shows 229 Medicare services from Dr. Grunewald across 2 procedure codes in 2024, for 233 Medicare patients. Medicare paid $27,733 for them.
Dr. Grunewald's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2272024: 2291%
Where Dr. Grunewald's Medicare services took place, 2024
- In an office3114%
- In a facility19886%
Dr. Grunewald compared with the Minnesota median for internists, 2024
- Dr. Grunewald
- Minnesota median
- Medicare services
- 229vs 33632% below
- Medicare patients
- 233vs 14857% above
- Part D claims
- 36vs 14475% below
Medians across 2,238 internists in Minnesota with Dmand AI profiles that report each measure.
Dr. Grunewald'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. Justin William Grunewald treated 233 Medicare patients in 2024, average age 73
CMS counts 233 Medicare patients who saw Dr. Grunewald in 2024. The largest group is 75 to 84, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 2.83, 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. Grunewald's median patient age at 65, with 61% women.
Dr. Grunewald's Medicare patients by age, 2024
Dr. Grunewald's Medicare patients by sex, 2024
- Women12855%
- Men10545%
Chronic conditions among Dr. Grunewald's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders54%
- Arthritis52%
- Chronic kidney disease52%
- Ischemic heart disease51%
- Depression50%
- Heart failure49%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grunewald'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
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justin William Grunewald wrote 36 Medicare Part D claims in 2018
In 2018, Dr. Grunewald wrote 36 Medicare Part D claims. They cover 3 drugs, with $424 in total drug cost. In 2017, CMS named 22 claims across 2 drugs.
Dr. Grunewald's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 222018: 3664%
Drugs named by CMS: 3 in 2018, 2 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Justin William Grunewald scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Grunewald for performance year 2024, reported as part of a group. Dr. Grunewald accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grunewald as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Grunewald's MIPS scores, performance year 2024
- 86of 100Final score
- 72.5of 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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Dr. Justin William Grunewald graduated from University of Minnesota Medical School
Dr. Grunewald graduated from University of Minnesota Medical School in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Justin William Grunewald'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) |
| 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 Dr. Justin William Grunewald
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. Justin William Grunewald's NPI number?
Dr. Justin William Grunewald's NPI number is 1932514650. It was assigned on June 23, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Justin William Grunewald?
Dr. Justin William Grunewald is an internist in Owatonna, Minnesota. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Justin William Grunewald practice?
Dr. Grunewald practices at 2250 26th Street Northwest, Owatonna, MN 55060. Dr. Grunewald's primary practice is Owatonna Hospital in Owatonna, Minnesota, part of Sutter Health. Dmand AI also links Dr. Grunewald to 3 hospitals.
What is Dr. Justin William Grunewald's office phone number?
The practice phone on file for Dr. Grunewald is (507) 451-3850.
What is Dr. Justin William Grunewald's medical license number?
Dr. Grunewald holds Minnesota license 59403.
Which hospitals is Dr. Justin William Grunewald affiliated with?
Dr. Grunewald practices at Owatonna Hospital in Owatonna, Minnesota. Dr. Grunewald is also affiliated with Abbott Northwestern Hospital. Dmand AI links Dr. Grunewald to 3 more hospitals.
What medical group is Dr. Justin William Grunewald part of?
Dr. Grunewald is linked to Buffalo Hospital.
Does Dr. Justin William Grunewald accept Medicare?
Yes. CMS data shows Dr. Grunewald billed Medicare for 229 services in 2024, and Dr. Grunewald accepts Medicare assignment.
Does Dr. Justin William Grunewald offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grunewald as offering telehealth services.
What is Dr. Justin William Grunewald's MIPS score?
Dr. Grunewald's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Justin William Grunewald see?
CMS counts 233 Medicare patients who saw Dr. Grunewald in 2024, with an average age of 73.
What services does Dr. Justin William Grunewald bill to Medicare?
In 2024, Dr. Grunewald's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
Where did Dr. Justin William Grunewald go to medical school?
Dr. Grunewald graduated from University of Minnesota Medical School in 2014.
What drugs does Dr. Justin William Grunewald prescribe most?
In 2018 Medicare Part D data, Dr. Grunewald's most prescribed drugs by claims were Oxycodone HCl, Isosorbide Mononitrate ER and Prednisone.
How long has Dr. Justin William Grunewald been practicing?
Dr. Grunewald graduated from medical school in 2014, 12 years ago.
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