Clinicians affiliated with University Professional Services

1,724 clinicians on file with this group · most practice in Portland-Vancouver-Hillsboro, OR-WA · PAC ID 4880760107

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

1,276 clinicians affiliated with University Professional Services are in the 2024 Medicare Part B data, 917 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Physician Assistant (183) · Nurse Practitioner (140) · Family Practice (78) · Internal Medicine (60) · Emergency Medicine (51) · Ophthalmology (51) · Neurology (48) · Diagnostic Radiology (46) · General Surgery (41) · Hospitalist (41) · Pathology (31) · Medical Oncology (30) · Hematology-Oncology (28) · Orthopedic Surgery (27) · Cardiology (25) · Gastroenterology (21) · Infectious Disease (21) · Obstetrics & Gynecology (21) · Pulmonary Disease (20) · Dermatology (19) · Psychiatry (19) · Endocrinology (18) · Nephrology (18) · Otolaryngology (18) · Interventional Radiology (17) · Urology (17) · Psychologist, Clinical (16) · Anesthesiology (15) · Neurosurgery (14) · Optometry (11) · Radiation Oncology (10) · Plastic and Reconstructive Surgery (9) · Surgical Oncology (9) · Critical Care (Intensivists) (8) · Pediatric Medicine (8) · Rheumatology (8) · Vascular Surgery (8) · Hospice and Palliative Care (7) · Cardiac Surgery (5) · Clinical Cardiac Electrophysiology (5) · Hematology (5) · Allergy/ Immunology (4) · Colorectal Surgery (Proctology) (4) · Gynecological Oncology (4) · Licensed Clinical Social Worker (4) · Physical Medicine and Rehabilitation (4) · Thoracic Surgery (4) · Geriatric Medicine (3) · Interventional Cardiology (3) · Podiatry (3) · Micrographic Dermatologic Surgery (2) · Nuclear Medicine (2) · Oral Surgery (Dentist only) (2) · Pain Management (2) · Sleep Medicine (2) · Addiction Medicine (1) · Adult Congenital Heart Disease (1) · Hand Surgery (1) · Maxillofacial Surgery (1) · Medical Genetics and Genomics (1) · Sports Medicine (1)

Specialty links go to the specialty in Portland-Vancouver-Hillsboro, OR-WA.

Clinicians affiliated with University Professional Services, 2024

Alphabetical by last name; 601–700 of 1,276.

NameSpecialtyCity
Lauren LaminaNurse PractitionerPortland, OR
Brian F Lane, M.D.General SurgeryPortland, OR
Michael A Lane, M.D.NeurologyPortland, OR
Lisa Langmesser, PA-CPhysician AssistantPortland, OR
Gurion S LantzCardiac SurgeryPortland, OR
Kendrick M Lau, MDFamily PracticePortland, OR
Andreas K Lauer, MDOphthalmologyPortland, OR
Rachel K Laursen, MDNeurologyPortland, OR
Maia Lavarias, PAPhysician AssistantPortland, OR
Brenda A Lavigne, PA-CPhysician AssistantPortland, OR
Nhat Q Le, FNP-BCNurse PractitionerGresham, OR
Sancy A Leachman, M.D.DermatologyMurray, UT
Amy E Leatherwood, N.P.Nurse PractitionerPortland, OR
Yaowaree Leavell, MDNeurologyPortland, OR
Amie Leaverton, M.D.Obstetrics & GynecologyPortland, OR
Catherine M Leclair, MDObstetrics & GynecologyPortland, OR
Justin E LeeFamily PracticePortland, OR
Mary Carroll Lee, M.D.Emergency MedicinePortland, OR
Peter M Lee, M.D., M.H.S.Pulmonary DiseasePortland, OR
Justin J Leitenberger, M.D.Micrographic Dermatologic SurgeryPortland, OR
Abigail A Lenhart, M.D.Internal MedicinePortland, OR
Jessica T Leonard, M.D.Hematology-OncologyPortland, OR
Linda B Lester, MDEndocrinologyPortland, OR
Ximena A Levander, M.D.HospitalistPortland, OR
Benjamin R Levin, M.D.CardiologyPortland, OR
Cara Levin, M.D.Hospice and Palliative CarePortland, OR
Corey Lewis, PAPhysician AssistantPortland, OR
Dekey Y Lhewa, MDGastroenterologyPortland, OR
Amy Li, MDNephrologyPortland, OR
Ryan J Li, M.D.OtolaryngologyPortland, OR
Yan LiPathologyPortland, OR
Sophia M Lichenstein-Hill, ARNPNurse PractitionerPortland, OR
Michael Lieberman, M.D.Internal MedicinePortland, OR
Timothy K Liem, MDVascular SurgeryPortland, OR
Gabriela L Lilly, MDOtolaryngologyPortland, OR
James Y Lim, M.D.Surgical OncologyPortland, OR
Clifford Lin, BSC, MD, MASC, FRCSCOrthopedic SurgeryPortland, OR
Allison Lindauer, FNPNurse PractitionerPortland, OR
Angelo B Lipira, M.D.Plastic and Reconstructive SurgeryPortland, OR
Adam B Lipson, MDNeurosurgeryPortland, OR
Kellie Littlefield, D.O.HospitalistPortland, OR
Benjamin Liu, M. D.PsychiatrySacramento, CA
Jen-Jane Liu, M.D.UrologyPortland, OR
Jesse Y LiuDermatologyPortland, OR
Jesse J Liu, M.D.NeurosurgeryPortland, OR
Patricia Liu, MDInternal MedicinePortland, OR
Winnie Y Liu, MDEndocrinologyPortland, OR
Zhongfeng Liu, PA-CPhysician AssistantPortland, OR
Monica M Llado-Farrulla, MDPlastic and Reconstructive SurgeryPortland, OR
Stephanie Locicero, PA-CPhysician AssistantPortland, OR
Ian A Logan, M.D.Physical Medicine and RehabilitationPortland, OR
Melissa LoganFamily PracticePortland, OR
Charles D Lopez, M.D.Hematology-OncologyPortland, OR
Marc M Loriaux, MDPathologyPortland, OR
Derek J Louie, BS, MS, ODOptometryPortland, OR
Sarah Lowry, NP, ACNP-BCNurse PractitionerBeaverton, OR
Myriam D Loyo Martinez, MDOtolaryngologyPortland, OR
Kim C Lu, MDColorectal Surgery (Proctology)Portland, OR
Zouyan Lu, M.D.Infectious DiseasePortland, OR
Casey Luce, M.D.AnesthesiologyPortland, OR
Olivia M Lucero, MDDermatologyPortland, OR
Joshin A Luiz, PA-CPhysician AssistantPortland, OR
Brandon Lujan, MDOphthalmologyPortland, OR
Audrey Lukey, ODOptometryHood River, OR
Nathalie Lunden, M.D.AnesthesiologyPortland, OR
Joshua R Lupton, MD, MPH, MPHILEmergency MedicinePortland, OR
Jacob T Luty, M.D.HospitalistPortland, OR
Canary Y Ly, DNP, FNP-BC, RNNurse PractitionerPortland, OR
Phong Ly, PA-CPhysician AssistantPortland, OR
Maureen D Lyons, MDInternal MedicinePortland, OR
Patrick G Lyons, MDPulmonary DiseasePortland, OR
Conrad J Macon, M.D.CardiologyPortland, OR
Christina R Macrosty, DOInternal MedicinePortland, OR
Dana L Madison, MD, PHDEndocrinologyPortland, OR
Marissa MaierInfectious DiseasePortland, OR
Jina T Makadia, M.D.Infectious DiseasePortland, OR
Nadine Mallak, MDDiagnostic RadiologyPortland, OR
Michael D MallonPhysician AssistantPortland, OR
Haley E Manella, MDEmergency MedicinePortland, OR
Robert D Mangrum, PA-CPhysician AssistantPortland, OR
Vishnu Manoranjan, MDInternal MedicineBeaverton, OR
Andre M Mansoor, MDInternal MedicinePortland, OR
Steven E Mansoor, M.D., PH.D.CardiologyPortland, OR
Louise E Marasco, PH.D.Psychologist, ClinicalPortland, OR
Jennifer March, MD, MSOtolaryngologyLake Oswego, OR
John L Marshall, MDEmergency MedicinePortland, OR
Kylee L Martens, MDMedical OncologyPortland, OR
Robert G Martindale, MDGeneral SurgeryPortland, OR
Nanette C Marty, MDInternal MedicinePortland, OR
Luke I Masha, M.D.CardiologyPortland, OR
Ahmad M Masri, M.DCardiologyPortland, OR
Mikel Matto, M.D.PsychiatryPortland, OR
Brian Mau, MDPathologyPortland, OR
Kimberly M Mauer, M.D.AnesthesiologyPortland, OR
Brandon C Maughan, MDEmergency MedicinePortland, OR
Ryanne J Mayersak, MDEmergency MedicinePortland, OR
Erin C Maynard, MDGeneral SurgeryLexington, KY
Sara A Mayo, M.D.Internal MedicinePortland, OR
Skye C Mayo, M.D., M.P.H.Surgical OncologyNew York, NY
Richard T Maziarz, MDHematology-OncologyPortland, OR

Practice locations

Listed practice locations in Oregon, Washington.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations