Dr. Jon Mark Grudem, MD
- Medicare services, 2024
- 69,335
- Medicare patients, 2024
- 338
- Part D claims, 2024
- 286
- Hospital affiliations
- 5
- Industry payments
- $365,837
- Practice address
- 575 Sioux Point Rd, North Sioux City, SD 57049
- Practice phone
- Call (605) 217-2667
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cnos
North Sioux City, South Dakota
Find Dr. Grudem'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. Jon Mark Grudem is a neurologist in North Sioux City, South Dakota
Dr. Grudem practices at Cnos in North Sioux City, South Dakota.
Dr. Grudem's NPI, 1477649531, was assigned on October 5, 2006. Dr. Grudem graduated from Oregon Health Sciences University School of Medicine in 2004. Dr. Grudem holds South Dakota license 7354.
- NPI
- 1477649531NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921150087
- NPI enumeration date
- October 5, 2006
- NPI status
- Active
- Practice phone
- (605) 217-2667
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Jon Mark Grudem practices at Cnos in North Sioux City, South Dakota
Dr. Grudem's primary practice is Cnos, at 575 Sioux Point Rd, North Sioux City, SD 57049 in Union County. The practice phone is (605) 217-2667.
- Cnos575 Sioux Point Rd, North Sioux City, SD 57049 · Union CountyPhone(605) 217-2667
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jon Mark Grudem is affiliated with 9 sites of care and 4 medical groups
Dr. Grudem's primary practice is Cnos in North Sioux City, South Dakota. Dr. Grudem is also affiliated with UnityPoint Health - St. Luke's. The medical group on file is CNOS. Dmand AI also links Dr. Grudem to 4 more hospitals, 3 group practices and clinics and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jon Mark Grudem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grudem practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cnos | Available with a free account |
| +8 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jon Mark Grudem is one of 56 neurologists in South Dakota
Neurology is Dr. Grudem's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Grudem's licenses on file in 2 states: South Dakota and Iowa.
Specialties and state licenses
- Neurology, South DakotaPrimary
- Iowa license
Neurologists near Dr. Grudem
Counts of neurologists 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. Jon Mark Grudem billed Medicare for 69,335 services in 2024
CMS data shows 69,335 Medicare services from Dr. Grudem across 17 procedure codes in 2024, for 338 Medicare patients. Medicare paid $426,939 for them. Every service was in an office.
Dr. Grudem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 65,8012024: 68,3424%
- Tests and treatments
- 2023: 5622024: 5997%
- Surgery
- 2023: 2012024: 28441%
- Office and hospital visits
- 2023: 1602024: 11031%
- Imaging
- 2023: 172024: 0100%
Dr. Grudem compared with the South Dakota median for neurologists, 2024
- Dr. Grudem
- South Dakota median
- Medicare services
- 69,335vs 429161.6 times
- Medicare patients
- 338vs 24637% above
- Part D claims
- 213vs 213Close to median
Medians across 52 neurologists in South Dakota with Dmand AI profiles that report each measure.
Dr. Grudem'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. Grudem?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grudem and other neurologists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jon Mark Grudem treated 338 Medicare patients in 2024, average age 72
CMS counts 338 Medicare patients who saw Dr. Grudem in 2024. The largest group is 65 to 74, with 171 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grudem's median patient age at 59, with 60% women.
Dr. Grudem's Medicare patients by age, 2024
Dr. Grudem's Medicare patients by sex, 2024
- Women19959%
- Men13941%
Chronic conditions among Dr. Grudem's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Depression32%
- Mood disorders32%
- Anxiety31%
- Diabetes28%
- Chronic kidney disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grudem's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jon Mark Grudem wrote 286 Medicare Part D claims in 2024
In 2024, Dr. Grudem wrote 286 Medicare Part D claims for 79 patients. 63% of them were for generic drugs. CMS names the drug for 213 of them, across 10 drugs with 11 or more claims each, at $146,516 in total drug cost. In 2023, CMS named 250 claims across 11 drugs.
Dr. Grudem's Part D claims by kind of drug, 2024
- Generic179 claims63%
- Brand-name107 claims37%
Dr. Grudem'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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2502024: 21315%
Drugs named by CMS: 10 in 2024, 11 in 2023.
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. Jon Mark Grudem ranks in the 65th percentile for skin biopsy in Medicare
CMS counts 28 procedures of skin biopsy by Dr. Grudem, more than 65% of the clinicians it reports for that procedure.
Where Dr. Grudem ranks in Medicare procedure volume
- Skin biopsy
- 65th percentile28 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Jon Mark Grudem received $365,837 in industry payments from 2016 to 2025
CMS Open Payments shows 641 general payments to Dr. Grudem from 21 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 81% of the total. Allergan Inc. paid the most, $176,333.
General payments to Dr. Grudem by program year, 2016 to 2025
General payments to Dr. Grudem by kind, 2016 to 2025
- Speaker and faculty fees$297,08081%
- Consulting fees$29,5408%
- Travel and lodging$25,1627%
- Food and beverage$11,1303%
- Honoraria$2,9251%
Companies that paid Dr. Grudem the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jon Mark Grudem graduated from Oregon Health Sciences University School of Medicine
Dr. Grudem graduated from Oregon Health Sciences University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jon Mark Grudem'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Jon Mark Grudem
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. Jon Mark Grudem's NPI number?
Dr. Jon Mark Grudem's NPI number is 1477649531. It was assigned on October 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jon Mark Grudem?
Dr. Jon Mark Grudem is a neurologist in North Sioux City, South Dakota. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Jon Mark Grudem practice?
Dr. Grudem practices at 575 Sioux Point Rd, North Sioux City, SD 57049. Dr. Grudem's primary practice is Cnos in North Sioux City, South Dakota. Dmand AI also links Dr. Grudem to 4 hospitals, 3 group practices and clinics and 3 medical groups.
What is Dr. Jon Mark Grudem's office phone number?
The practice phone on file for Dr. Grudem is (605) 217-2667.
What is Dr. Jon Mark Grudem's medical license number?
Dr. Grudem holds South Dakota license 7354, one of the licenses on file in 2 states.
Which states has Dr. Jon Mark Grudem been licensed in?
Dmand AI has state licenses on file for Dr. Grudem in South Dakota and Iowa.
Which hospitals is Dr. Jon Mark Grudem affiliated with?
Dr. Grudem is affiliated with UnityPoint Health - St. Luke's. Dmand AI links Dr. Grudem to 4 more hospitals.
What medical group is Dr. Jon Mark Grudem part of?
Dr. Grudem is linked to CNOS. Dmand AI links Dr. Grudem to 3 more medical groups.
Does Dr. Jon Mark Grudem accept Medicare?
Yes. CMS data shows Dr. Grudem billed Medicare for 69,335 services in 2024.
How many Medicare patients does Dr. Jon Mark Grudem see?
CMS counts 338 Medicare patients who saw Dr. Grudem in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Jon Mark Grudem bill to Medicare?
In 2024, Dr. Grudem's most billed Medicare services were injected or infused drug (J0585), nerve and brain test (95874) and nerve and brain test (95886).
Where did Dr. Jon Mark Grudem go to medical school?
Dr. Grudem graduated from Oregon Health Sciences University School of Medicine in 2004.
What drugs does Dr. Jon Mark Grudem prescribe most?
In 2024 Medicare Part D data, Dr. Grudem's most prescribed drugs by claims were Carbidopa-Levodopa, Nurtec ODT and Ubrelvy.
Has Dr. Jon Mark Grudem received payments from drug or device companies?
CMS Open Payments shows $365,837 in general payments to Dr. Grudem from 21 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. Jon Mark Grudem been practicing?
Dr. Grudem graduated from medical school in 2004, 22 years ago.
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