Kathleen Mary Obrien, MD
Emergency Medicine Physician · Reno, NV
Kathleen Mary Obrien, MD is an emergency medicine physician with a practice address in Reno, Nevada, and NPI 1427236975, issued on Feb 7, 2008. Check the license (Nevada 17437, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Kathleen Mary Obrien
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 17437 NV
A134513 CA
77459 AZ
254591 MA
Self-reported in NPPES; status is on the state search - Practice location
- 550 W Plumb LN # B245, Reno, NV 89509
- Phone
- (508) 769-3310
- Enumerated
- Feb 7, 2008
- Record last updated
- Feb 25, 2025
- Medicare enrollment
- Enrolled (PECOS I20171206001954); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2006
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 575 in Nevada → Look up another NPI →
Verify Kathleen Mary Obrien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 17437Check 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 emergency medicine physician in 2024
90 Medicare Part D claims for 59 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
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): 84.5 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 4 group practices
- California Emergency Physicians Medical Group A Professional CorpTruckee, CA
- Carson Tahoe Emergency PhysiciansCarson City, NV
- Cep America - CaliforniaTruckee, CA
- Tahoe Forest Hospital DistrictTruckee, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Mary Obrien among 575 emergency medicine physician records in Nevada
Kathleen Mary Obrien, MD is one of 575 emergency medicine physician records with a practice address in Nevada. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2006 · median 2014 among the 366 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Nevada
There are 575 emergency medicine physician records in Nevada.
All 575 in Nevada → Every provider in Reno → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Laning Andrews, M.D.Reno, NV 895091750481750
- Sally MandichakReno, NV 895091124547930
- Douglas Canham, MDReno, NV 895111588640445
- Alexis Georgallides, MDReno, NV 895111164085270
- Onna Jernigan, MDReno, NV 895111336108547
- Ryan Ley, M.D.Reno, NV 895071073637203
- Curtis Marino, DOReno, NV 895111023638988
- Dan Snow, MDReno, NV 895111417989120
Common questions
What is Kathleen Mary Obrien, MD's NPI number?
Kathleen Mary Obrien, MD's National Provider Identifier (NPI) is 1427236975, issued on Feb 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Mary Obrien, MD located?
The NPPES record lists a practice address at 550 W Plumb LN # B245, Reno, NV, 89509. Phone: (508) 769-3310. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Mary Obrien, MD's license?
NPPES lists Nevada license number 17437, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathleen Mary Obrien, MD prescribe under Medicare Part D?
In 2024, Kathleen Mary Obrien, MD had 90 Medicare Part D claims for 59 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Kathleen Mary Obrien, MD's MIPS final score?
The 2023 MIPS final score is 84.5 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.