Dr. Patrick Mark O'Brien, MD
- Medicare services, 2024
- 539
- Medicare patients, 2024
- 205
- Part D claims, 2024
- 138
- Hospital affiliations
- 5
- Industry payments
- $17,779
- Practice address
- 911 E 20th St, Sioux Falls, SD 57105
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Avera Orthopedics Back & Neck - HOPD
Acute Care Hospital outpatient department · Sioux Falls, South Dakota
Find Dr. O'Brien'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. Patrick Mark O'Brien is an orthopedic surgeon in Sioux Falls, South Dakota
Dr. O'Brien practices at Avera Orthopedics Back & Neck - HOPD in Sioux Falls, South Dakota.
Dr. O'Brien's NPI, 1861615155, was assigned on April 11, 2007. Dr. O'Brien graduated from Creighton University School of Medicine in 2007. Dr. O'Brien holds South Dakota license 10105.
- NPI
- 1861615155NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032344403
- NPI enumeration date
- April 11, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick Mark O'Brien practices at Avera Orthopedics Back & Neck - HOPD in Sioux Falls, South Dakota
Dr. O'Brien's primary practice is Avera Orthopedics Back & Neck - HOPD, at 911 E 20th St, Sioux Falls, SD 57105.
- Avera Orthopedics Back & Neck - HOPD911 E 20th St, Sioux Falls, SD 57105
Source: Dmand AI Affiliation Data
Dr. Patrick Mark O'Brien is affiliated with 7 sites of care and 2 medical groups
Dr. O'Brien's primary practice is Avera Orthopedics Back & Neck - HOPD in Sioux Falls, South Dakota. Dr. O'Brien is also affiliated with Avera McKennan Hospital & University Health Center. The medical group on file is Avera McKennan Hospital & University Health Center. Dmand AI also links Dr. O'Brien to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. O'Brien's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Patrick Mark O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera Orthopedics Back & Neck - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Patrick Mark O'Brien is one of 113 orthopedic surgeons in South Dakota
Orthopaedic surgery is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. O'Brien's licenses on file in 2 states: South Dakota and North Carolina.
Specialties and state licenses
- Orthopaedic surgery, South DakotaPrimary
- North Carolina license
Orthopedic surgeons near Dr. O'Brien
Counts of orthopedic surgeons 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. Patrick Mark O'Brien billed Medicare for 539 services in 2024
CMS data shows 539 Medicare services from Dr. O'Brien across 7 procedure codes in 2024, for 205 Medicare patients. Medicare paid $22,430 for them.
Dr. O'Brien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3362024: 27917%
- Drugs given in the office
- 2023: 1842024: 1882%
- Surgery
- 2023: 772024: 726%
Where Dr. O'Brien's Medicare services took place, 2024
- In an office52698%
- In a facility132%
Dr. O'Brien compared with the South Dakota median for orthopedic surgeons, 2024
- Dr. O'Brien
- South Dakota median
- Medicare services
- 539vs 5827% below
- Medicare patients
- 205vs 24215% below
- Part D claims
- 76vs 79Close to median
Medians across 116 orthopedic surgeons in South Dakota with Dmand AI profiles that report each measure.
Dr. O'Brien'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. O'Brien and other orthopedic surgeons in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick Mark O'Brien treated 205 Medicare patients in 2024, average age 72
CMS counts 205 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 119 patients. 71% of them have arthritis, and 70% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 53, with 55% women.
Dr. O'Brien's Medicare patients by age, 2024
Dr. O'Brien's Medicare patients by sex, 2024
- Women11154%
- Men9446%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- Arthritis71%
- High blood pressure70%
- High cholesterol68%
- Mood disorders26%
- Anxiety25%
- Depression24%
- Diabetes24%
- Ischemic heart disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick Mark O'Brien wrote 138 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 138 Medicare Part D claims for 42 patients. 82% of them were for generic drugs. CMS names the drug for 76 of them, across 5 drugs with 11 or more claims each, at $5,602 in total drug cost. In 2023, CMS named 67 claims across 4 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic113 claims82%
- Brand-name25 claims18%
Dr. O'Brien'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 Dr. O'Brien's Part D claims, 2024
- Opioids8%11 of 138 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 672024: 7613%
Drugs named by CMS: 5 in 2024, 4 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. Patrick Mark O'Brien ranks in the 92nd percentile for lower limb (leg) arthroscopy (minimally invasive joint repair) in Medicare
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 20 procedures of lower limb (leg) arthroscopy (minimally invasive joint repair) by Dr. O'Brien, more than 92% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. O'Brien ranks in Medicare procedure volume
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 79th percentile36 procedures
- Lower limb (leg) arthroscopy (minimally invasive joint repair)
- 92nd percentile20 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Patrick Mark O'Brien received $17,779 in industry payments from 2016 to 2025
CMS Open Payments shows 90 general payments to Dr. O'Brien from 15 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 41% of the total. Smith & Nephew, Inc. paid the most, $4,745.
General payments to Dr. O'Brien by program year, 2016 to 2025
General payments to Dr. O'Brien by kind, 2016 to 2025
- Travel and lodging$7,21341%
- Education$4,26524%
- Food and beverage$3,79521%
- Speaker and faculty fees$2,50014%
- Entertainment$60%
Companies that paid Dr. O'Brien 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. Patrick Mark O'Brien graduated from Creighton University School of Medicine
Dr. O'Brien graduated from Creighton University School of Medicine in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Patrick Mark O'Brien'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 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 National Downloadable File (CMS) (opens in a new tab)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. Patrick Mark O'Brien
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. Patrick Mark O'Brien's NPI number?
Dr. Patrick Mark O'Brien's NPI number is 1861615155. It was assigned on April 11, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick Mark O'Brien?
Dr. Patrick Mark O'Brien is an orthopedic surgeon in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Patrick Mark O'Brien practice?
Dr. O'Brien practices at 911 E 20th St, Sioux Falls, SD 57105. Dr. O'Brien's primary practice is Avera Orthopedics Back & Neck - HOPD in Sioux Falls, South Dakota. Dmand AI also links Dr. O'Brien to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Patrick Mark O'Brien's medical license number?
Dr. O'Brien holds South Dakota license 10105, one of the licenses on file in 2 states.
Which states has Dr. Patrick Mark O'Brien been licensed in?
Dmand AI has state licenses on file for Dr. O'Brien in South Dakota and North Carolina.
Which hospitals is Dr. Patrick Mark O'Brien affiliated with?
Dr. O'Brien is affiliated with Avera McKennan Hospital & University Health Center. Dmand AI links Dr. O'Brien to 4 more hospitals.
What medical group is Dr. Patrick Mark O'Brien part of?
Dr. O'Brien is linked to Avera McKennan Hospital & University Health Center. Dmand AI links Dr. O'Brien to 1 more medical group.
Does Dr. Patrick Mark O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 539 services in 2024, and Dr. O'Brien accepts Medicare assignment.
How many Medicare patients does Dr. Patrick Mark O'Brien see?
CMS counts 205 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 72.
What services does Dr. Patrick Mark O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99214) and surgery: bones and joints (20610).
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Where did Dr. Patrick Mark O'Brien go to medical school?
Dr. O'Brien graduated from Creighton University School of Medicine in 2007.
What drugs does Dr. Patrick Mark O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Meloxicam, Januvia and Atorvastatin Calcium.
Has Dr. Patrick Mark O'Brien received payments from drug or device companies?
CMS Open Payments shows $17,779 in general payments to Dr. O'Brien from 15 companies from 2016 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Dr. Patrick Mark O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2007, 19 years ago.
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