Dr. Mark K. Arness, MD
- Medicare services, 2024
- 249
- Medicare patients, 2024
- 158
- Part D claims, 2024
- 211
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 5 Garrett Avenue, La Plata, MD 20646
- Practice phone
- Call (301) 609-4265
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Arness' professional email, personal email and mobile number
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Dr. Mark K. Arness is a preventive medicine/occupational environmental medicine physician in La Plata, Maryland
Dr. Arness practices at University of Maryland Charles Regional Medical Center in La Plata, Maryland, part of University of Maryland Medical System.
Dr. Arness' NPI, 1831114115, was assigned on July 13, 2006. Dr. Arness holds Virginia license 0101243162.
- NPI
- 1831114115NPI Registry (opens in a new tab)
- NPI enumeration date
- July 13, 2006
- NPI status
- Active
- Practice phone
- (301) 609-4265
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark K. Arness practices at University of Maryland Charles Regional Medical Center in La Plata, Maryland
Dr. Arness' primary practice is University of Maryland Charles Regional Medical Center, at 5 Garrett Avenue, La Plata, MD 20646 in Charles County. The practice phone is (301) 609-4265.
- University of Maryland Charles Regional Medical Center5 Garrett Avenue, La Plata, MD 20646 · Charles CountyPhone(301) 609-4265
Source: Dmand AI Affiliation Data
Dr. Mark K. Arness is affiliated with 1 site of care and 1 medical group
Dr. Arness' primary practice is University of Maryland Charles Regional Medical Center in La Plata, Maryland, part of University of Maryland Medical System. The medical group on file is Signify Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark K. Arness' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Arness practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Maryland Charles Regional Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark K. Arness is one of 15 preventive medicine/occupational environmental medicine physicians in Maryland
Preventive medicine/occupational environmental medicine is Dr. Arness' primary specialty in the NPI Registry, under taxonomy code 2083P0500X. Dmand AI has Dr. Arness' licenses on file in 2 states: Virginia and Maryland.
Specialties and state licenses
- Preventive medicine/occupational environmental medicine, VirginiaPrimary
- Occupational medicine, Maryland
Preventive medicine/occupational environmental medicine physicians near Dr. Arness
Counts of preventive medicine/occupational environmental medicine physicians 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 K. Arness billed Medicare for 249 services in 2024
CMS data shows 249 Medicare services from Dr. Arness across 4 procedure codes in 2024, for 158 Medicare patients. Medicare paid $22,800 for them.
Dr. Arness' Medicare services by type, 2020 to 2024
- 2020
- 2024
- Office and hospital visits
- 2020: 2902024: 24914%
- Other services
- 2020: 132024: 0100%
Where Dr. Arness' Medicare services took place, 2024
- In an office11145%
- In a facility13855%
Dr. Arness' 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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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Mark K. Arness treated 158 Medicare patients in 2024, average age 80
CMS counts 158 Medicare patients who saw Dr. Arness in 2024. The largest group is 75 to 84, with 67 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 52% are also on Medicaid. Their average risk score is 2.08, 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. Arness' median patient age at 77, with 48% women.
Dr. Arness' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Arness' Medicare patients by sex, 2024
- Women9560%
- Men6340%
Chronic conditions among Dr. Arness' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Alzheimer's and dementia60%
- Mood disorders59%
- Depression58%
- Chronic kidney disease52%
- Ischemic heart disease47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Arness' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark K. Arness wrote 211 Medicare Part D claims in 2024
In 2024, Dr. Arness wrote 211 Medicare Part D claims for 39 patients. 93% of them were for generic drugs. CMS names the drug for 75 of them, across 5 drugs with 11 or more claims each, at $962 in total drug cost. In 2021, CMS named 76 claims across 5 drugs.
Dr. Arness' Part D claims by kind of drug, 2024
- Generic197 claims93%
- Brand-name14 claims7%
Dr. Arness' 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 Dr. Arness' Part D claims, 2024
- Opioids8%17 of 211 claims
- Antipsychotics, patients 65 and over5%11 of 211 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, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 762024: 751%
Drugs named by CMS: 5 in 2024, 5 in 2021.
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
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Sources for Dr. Mark K. Arness'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) |
| 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) |
| 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 K. Arness
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 K. Arness' NPI number?
Dr. Mark K. Arness' NPI number is 1831114115. It was assigned on July 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark K. Arness?
Dr. Mark K. Arness is a preventive medicine/occupational environmental medicine physician in La Plata, Maryland. The primary specialty in the NPI Registry is Preventive Medicine/Occupational Environmental Medicine Physician (taxonomy code 2083P0500X).
Where does Dr. Mark K. Arness practice?
Dr. Arness practices at 5 Garrett Avenue, La Plata, MD 20646. Dr. Arness' primary practice is University of Maryland Charles Regional Medical Center in La Plata, Maryland, part of University of Maryland Medical System.
What is Dr. Mark K. Arness' office phone number?
The practice phone on file for Dr. Arness is (301) 609-4265.
What is Dr. Mark K. Arness' medical license number?
Dr. Arness holds Virginia license 0101243162, one of the licenses on file in 2 states.
Which states has Dr. Mark K. Arness been licensed in?
Dmand AI has state licenses on file for Dr. Arness in Virginia and Maryland.
Which hospitals is Dr. Mark K. Arness affiliated with?
Dr. Arness practices at University of Maryland Charles Regional Medical Center in La Plata, Maryland.
What medical group is Dr. Mark K. Arness part of?
Dr. Arness is linked to Signify Health.
Does Dr. Mark K. Arness accept Medicare?
Yes. CMS data shows Dr. Arness billed Medicare for 249 services in 2024.
How many Medicare patients does Dr. Mark K. Arness see?
CMS counts 158 Medicare patients who saw Dr. Arness in 2024, with an average age of 80.
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What services does Dr. Mark K. Arness bill to Medicare?
In 2024, Dr. Arness' most billed Medicare services were nursing facility care (99309), nursing facility care (99308) and nursing facility care (99306).
What drugs does Dr. Mark K. Arness prescribe most?
In 2024 Medicare Part D data, Dr. Arness' most prescribed drugs by claims were Donepezil HCl, Pravastatin Sodium and Sertraline HCl.
How long has Dr. Mark K. Arness been practicing?
Dr. Arness' NPI was assigned in 2006.
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