Patrick Mark O'Brien, M.D.
Orthopaedic Surgery Physician · Sioux Falls, SD
Patrick Mark O'Brien, M.D. is an orthopaedic surgery physician with a practice address in Sioux Falls, South Dakota, and NPI 1861615155, issued on Apr 11, 2007. Check the license (South Dakota 10105, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Patrick Mark O'Brien
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- 10105 SD
2014-01725 NC
Self-reported in NPPES; status is on the state search - Practice location
- 911 E 20TH St Ste 300, Sioux Falls, SD 57105
- Phone
- (605) 322-1300
- Enumerated
- Apr 11, 2007
- Record last updated
- Oct 31, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (605) 322-1301
- Medicare enrollment
- Enrolled (PECOS I20191014003429); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 113 in South Dakota → Look up another NPI →
Also registered at 911 E 20TH St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Clark, CNPNurse Practitioner1033981774
- Kathlyn Drexler, M.D.Orthopaedic Hand Surgery Physician1497048896
- Timothy Fagerness, CNPOrthopaedic Surgery of the Spine Physician1649993817
- John Faryna, MDOrthopaedic Surgery Physician1164734422
- Tiffany Johnston, CNPNurse Practitioner1437670965
Verify Patrick Mark O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 10105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
138 Medicare Part D claims for 42 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 11 claims were for opioids.
Most prescribed
- Meloxicam20 claims
- Januvia18 claims
- Atorvastatin Calcium13 claims
- Methylprednisolone13 claims
- Brimonidine Tartrate12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $52.32
2 payments; by number, the most common kind was food and beverage; the largest payer was Conetic Solutions, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Avera MckennanRock Rapids, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Patrick Mark O'Brien among 113 orthopaedic surgery physician records in South Dakota
Patrick Mark O'Brien, M.D. is one of 113 orthopaedic surgery physician records with a practice address in South Dakota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2007 · median 2005 among the 83 with a school on file
- Record last updated2019 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in South Dakota
There are 113 orthopaedic surgery physician records in South Dakota.
All 113 in South Dakota → Every provider in Sioux Falls → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Gail Benson, MDSioux Falls, SD 571051184659500
- Walter Carlson, MDSioux Falls, SD 571051003823170
- John Faryna, MDSioux Falls, SD 571051164734422
- Anthony Fiegen, MDSioux Falls, SD 571051659877736
- Geoffrey Haft, M.D.Sioux Falls, SD 571051497752810
- Daniel Johnson, MDSioux Falls, SD 571051548229875
- Mitchell Johnson, DOSioux Falls, SD 571051275568693
- Jeffrey Kalo, DOSioux Falls, SD 571051982665253
Common questions
What is Patrick Mark O'Brien, M.D.'s NPI number?
Patrick Mark O'Brien, M.D.'s National Provider Identifier (NPI) is 1861615155, issued on Apr 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Patrick Mark O'Brien, M.D. located?
The NPPES record lists a practice address at 911 E 20TH St Ste 300, Sioux Falls, SD, 57105. Phone: (605) 322-1300. Providers update this record themselves, so call before visiting.
How can I verify Patrick Mark O'Brien, M.D.'s license?
NPPES lists South Dakota license number 10105, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Patrick Mark O'Brien, M.D. prescribe under Medicare Part D?
In 2024, Patrick Mark O'Brien, M.D. had 138 Medicare Part D claims for 42 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.