Dr. Mark Warren Nelson, DO
- Medicare services, 2024
- 3,064
- Medicare patients, 2024
- 987
- Hospital affiliations
- 4
- Industry payments
- $156
- Medical groups
- 4
- Practice address
- 1380 East Medical Center Drive, Saint George, UT 84790
- Practice phone
- Call (435) 251-2100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Mark Warren Nelson is a pathologist in Saint George, Utah
Dr. Nelson practices at St. George Regional Hospital in Saint George, Utah, part of Intermountain Health.
Dr. Nelson's NPI, 1346496163, was assigned on August 12, 2008. Dr. Nelson graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2006. Dr. Nelson holds Ohio license 34.009868.
- NPI
- 1346496163NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709063100
- NPI enumeration date
- August 12, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (435) 251-2100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Warren Nelson practices at St. George Regional Hospital in Saint George, Utah
Dr. Nelson's primary practice is St. George Regional Hospital, at 1380 East Medical Center Drive, Saint George, UT 84790 in Washington County. The practice phone is (435) 251-2100.
- St. George Regional Hospital1380 East Medical Center Drive, Saint George, UT 84790 · Washington CountyPhone(435) 251-2100
Source: Dmand AI Affiliation Data
Dr. Mark Warren Nelson is affiliated with 5 sites of care and 4 medical groups
Dr. Nelson's primary practice is St. George Regional Hospital in Saint George, Utah, part of Intermountain Health. Dr. Nelson is also affiliated with University Hospitals TriPoint Medical Center. The medical group on file is Pathology Experts. Dmand AI also links Dr. Nelson to 2 more hospitals, 3 medical groups and 1 behavioral health center, 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. Mark Warren Nelson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nelson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. George Regional Hospital | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Warren Nelson is one of 95 pathologists in Utah
Anatomic pathology and clinical pathology is Dr. Nelson's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Nelson is licensed in Ohio.
Specialties and state licenses
- Anatomic pathology and clinical pathology, OhioPrimary
Pathologists near Dr. Nelson
Counts of pathologists 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. Mark Warren Nelson billed Medicare for 3,064 services in 2024
CMS data shows 3,064 Medicare services from Dr. Nelson across 14 procedure codes in 2024, for 987 Medicare patients. Medicare paid $85,705 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nelson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,6792024: 3,03813%
- Other services
- 2023: 142024: 2686%
Dr. Nelson compared with the Utah median for pathologists, 2024
- Dr. Nelson
- Utah median
- Medicare services
- 3,064vs 1,2762.4 times
- Medicare patients
- 987vs 4812.1 times
Medians across 87 pathologists in Utah with Dmand AI profiles that report each measure.
Dr. Nelson'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nelson and other pathologists in Utah.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Warren Nelson treated 987 Medicare patients in 2024, average age 75
CMS counts 987 Medicare patients who saw Dr. Nelson in 2024. The largest group is 65 to 74, with 443 patients. 74% of them have high blood pressure, and 69% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nelson's median patient age at 67, with 57% women.
Dr. Nelson's Medicare patients by age, 2024
Dr. Nelson's Medicare patients by sex, 2024
- Women51152%
- Men47648%
Chronic conditions among Dr. Nelson's Medicare patients, 2024
- High blood pressure74%
- High cholesterol69%
- Arthritis47%
- Diabetes30%
- Ischemic heart disease30%
- Cancer29%
- Chronic kidney disease26%
- Mood disorders26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nelson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Mark Warren Nelson takes part in Medicare
Dr. Nelson 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. Mark Warren Nelson received $156 in industry payments from 2019 to 2024
CMS Open Payments shows 3 general payments to Dr. Nelson from 3 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Galvanize Therapeutics, Inc paid the most, $122.
General payments to Dr. Nelson by program year, 2019 to 2024
Companies that paid Dr. Nelson the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Warren Nelson graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Nelson graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Warren Nelson'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) |
| 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. Mark Warren Nelson
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. Mark Warren Nelson's NPI number?
Dr. Mark Warren Nelson's NPI number is 1346496163. It was assigned on August 12, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Warren Nelson?
Dr. Mark Warren Nelson is a pathologist in Saint George, Utah. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Mark Warren Nelson practice?
Dr. Nelson practices at 1380 East Medical Center Drive, Saint George, UT 84790. Dr. Nelson's primary practice is St. George Regional Hospital in Saint George, Utah, part of Intermountain Health. Dmand AI also links Dr. Nelson to 2 hospitals, 3 medical groups and 1 behavioral health center.
What is Dr. Mark Warren Nelson's office phone number?
The practice phone on file for Dr. Nelson is (435) 251-2100.
What is Dr. Mark Warren Nelson's medical license number?
Dr. Nelson holds Ohio license 34.009868.
Which hospitals is Dr. Mark Warren Nelson affiliated with?
Dr. Nelson practices at St. George Regional Hospital in Saint George, Utah. Dr. Nelson is also affiliated with University Hospitals TriPoint Medical Center. Dmand AI links Dr. Nelson to 2 more hospitals.
What medical group is Dr. Mark Warren Nelson part of?
Dr. Nelson is linked to Pathology Experts. Dmand AI links Dr. Nelson to 3 more medical groups.
Does Dr. Mark Warren Nelson accept Medicare?
Yes. CMS data shows Dr. Nelson billed Medicare for 3,064 services in 2024, and Dr. Nelson accepts Medicare assignment.
How many Medicare patients does Dr. Mark Warren Nelson see?
CMS counts 987 Medicare patients who saw Dr. Nelson in 2024, with an average age of 75.
What services does Dr. Mark Warren Nelson bill to Medicare?
In 2024, Dr. Nelson's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88342).
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Where did Dr. Mark Warren Nelson go to medical school?
Dr. Nelson graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2006.
Has Dr. Mark Warren Nelson received payments from drug or device companies?
CMS Open Payments shows $156 in general payments to Dr. Nelson from 3 companies from 2019 to 2024. The largest total came from Galvanize Therapeutics, Inc.
How long has Dr. Mark Warren Nelson been practicing?
Dr. Nelson graduated from medical school in 2006, 20 years ago.
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