Katherine O'Brien, MD
Hospice and Palliative Medicine (Internal Medicine) Physician · Saint Louis, MO
Katherine O'Brien, MD is a hospice and palliative medicine (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1033452479, issued on Apr 4, 2013. Check the license (Missouri 2023008636, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Katherine O'Brien
- Credential
- MD
- Primary taxonomy
- Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X
- License number
- 2023008636 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 454-7376
- Enumerated
- Apr 4, 2013
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-9878
- Medicaid ID
- 200129891 MO
- Medicare enrollment
- Enrolled (PECOS I20230912003799); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hospice and palliative medicine (internal medicine) physician records → All 49 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2023008636Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average hospice and palliative medicine (internal medicine) physician in 2024
1,312 Medicare Part D claims for 115 beneficiaries, against an average of 741 among the 1,607 providers of this specialty who prescribed in Part D. 210 claims were for opioids.
Most prescribed
- Atorvastatin Calcium124 claims
- Oxycodone Hcl76 claims
- Morphine Sulfate Er67 claims
- Amlodipine Besylate60 claims
- Levothyroxine Sodium48 claims
- Omeprazole36 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Washington UniversitySaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine O'Brien among 49 hospice and palliative medicine (internal medicine) physician records in Missouri
Katherine O'Brien, MD is one of 49 hospice and palliative medicine (internal medicine) physician records with a practice address in Missouri. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 80% of them.
- NPI issued2013 · 80% of these records are older, 12% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2013 · median 2006 among the 30 with a school on file
- Record last updated2025 · 27% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0002X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospice and Palliative Medicine (Internal Medicine) Physician providers in Missouri
There are 49 hospice and palliative medicine (internal medicine) physician records in Missouri.
All 49 in Missouri → Every provider in Saint Louis → Hospice and Palliative Medicine (Internal Medicine) Physician nationwide →
The 8 hospice and palliative medicine (internal medicine) physician records with the nearest ZIP codes
- Erin Bakanas, MDSaint Louis, MO 631101043229974
- Hermann Koller, MDSaint Louis, MO 631101578771812
- Eberechi Nwogu-Onyemkpa, MDSaint Louis, MO 631101487090932
- Devin Odom, MDSaint Louis, MO 631101497065452
- Daniel Paget, MDSaint Louis, MO 631101225370489
- Megan Rau, MDSaint Louis, MO 631101720346265
- Michelle Schultz, MDSaint Louis, MO 631101114954708
- James Shear, MDSaint Louis, MO 631101215953443
Common questions
What is Katherine O'Brien, MD's NPI number?
Katherine O'Brien, MD's National Provider Identifier (NPI) is 1033452479, issued on Apr 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Katherine O'Brien, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 454-7376. Providers update this record themselves, so call before visiting.
How can I verify Katherine O'Brien, MD's license?
NPPES lists Missouri license number 2023008636, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine O'Brien, MD prescribe under Medicare Part D?
In 2024, Katherine O'Brien, MD had 1,312 Medicare Part D claims for 115 beneficiaries; the average among hospice and palliative medicine (internal medicine) physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Katherine O'Brien, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.