Providers Marie Duffin to Christine Duffy, MSPT
300 individual NPIs in the federal registry, part 5,856 of 24,427 of the A to Z by surname. Each row is the registry's record: the name and credential, the NPI, the primary specialty, the practice city and the year the NPI was issued. 92 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Marie Duffin | 1003320110 | Mental Health Counselor | Champaign, IL | 2017 |
| Martha Ann Duffin, D.O. | 1730147828 | Pediatrics Physician | Kansas City, MO | 2006 |
| Matthew Duffin, MD | 1528452745 | Orthopaedic Surgery Physician | Rock Hill, SC | 2015 |
| Megan Duffin, DPT | 1487329629 | Physical Therapist | Birmingham, AL | 2021 |
| Michael Duffin, PHARMD | 1255764460 | Pharmacist | Mount Royal, NJ | 2013 |
| Michael Duffin, M.D. | 1578587309 | Rheumatology Physician | Torrance, CA | 2006 |
| Monet Duffin | 1669321071 | Behavior Technician | Riverside, CA | 2026 |
| Natalie Duffin | 1679406185 | Student in an Organized Health Care Education/Training Program | Charleston, SC | 2026 |
| Nathan Duffin, D.O. | 1497016190 | Internal Medicine Physician | Mesa, AZ | 2012 |
| Nicolette Duffin | 1871268078 | Behavior Analyst | Palm Beach Gardens, FL | 2021 |
| Preston Duffin, D.D.S, M.S. | 1003044991 | Orofacial Pain Dentistry | Tyndall Afb, FL | 2009 |
| Rachel Duffin, MS, CCC-SLP | 1518476480 | Speech-Language Pathologist | Littleton, CO | 2017 |
| Ralph Duffin, D.D.S. | 1699910257 | Dentist | Medford, OR | 2008 |
| Regan Duffin | 1407439086 | Behavior Technician | Salt Lake City, UT | 2021 |
| Riley Duffin | 1922777093 | Behavior Technician | Deerfield Beach, FL | 2021 |
| Robert Duffin, M.D. | 1568647436 | Ophthalmology Physician | Salt Lake City, UT | 2008 |
| Ronald Duffin, DDS | 1033254230 | General Practice Dentistry | Hemet, CA | 2007 |
| Ryan Duffin, LMSW | 1417662859 | Clinical Social Worker | Minot, ND | 2023 |
| Scott Duffin, MD | 1255367991 | Orthopaedic Surgery Physician | Augusta, GA | 2006 |
| Steven Duffin, DDS | 1073699260 | Dentist | Keizer, OR | 2006 |
| Tammy Duffin, LMT | 1497946057 | Massage Therapist | Spring Hill, FL | 2007 |
| Timothy Duffin, MD | 1144291527 | Urology Physician | Clarksville, TN | 2006 |
| Valerie Duffin, OTR/L | 1255714481 | Occupational Therapist | Bountiful, UT | 2015 |
| Wallace Duffin, DDS | 1588710701 | Dentist | Hemet, CA | 2007 |
| Rylee Duffin-Clarke | 1144938705 | Mental Health Counselor | Pottstown, PA | 2022 |
| Alisha Duffina | 1235478066 | Specialist | Medina, NY | 2013 |
| Teresa Duffina, LPN | 1659267409 | Licensed Practical Nurse | Panama City, FL | 2025 |
| Chelsea Duffiney, RDN | 1134981681 | Registered Dietitian | Ann Arbor, MI | 2024 |
| Chloe Duffiney | 1366138992 | Physical Therapy Assistant | Kennett Square, PA | 2023 |
| Tiffany Duffing, PHD | 1033404017 | Clinical Psychologist | Burke, VA | 2011 |
| Amber Duffins | 1063348886 | Behavior Technician | Dallas, TX | 2026 |
| Alvaris Duffis, M.D. | 1073556668 | Diagnostic Radiology Physician | Santa Rosa, CA | 2006 |
| Ennis Duffis, M.D. | 1174674295 | Neurology Physician | Springfield, MA | 2007 |
| Danielle Duffle, DO | 1992509970 | Student in an Organized Health Care Education/Training Program | Columbus, OH | 2025 |
| Megan Duffle | 1588338396 | Behavior Technician | San Diego, CA | 2021 |
| Liji Duffleurand, APRN | 1295417467 | Nurse Practitioner | Riviera Beach, FL | 2023 |
| Emily Duffley, MSW | 1871327783 | Clinical Social Worker | Stoughton, MA | 2024 |
| Emilyann Duffley, AUD | 1205559689 | Audiologist | Houston, TX | 2022 |
| Kathryn Duffley | 1407640196 | Behavior Analyst | Nashville, TN | 2025 |
| Kelsey Duffley | 1518435874 | Case Manager/Care Coordinator | Whitehall, OH | 2018 |
| Sarah Duffley, MSW | 1316371388 | Clinical Social Worker | Lebanon, NH | 2013 |
| Lisa Duffley-Kazmierski, D.T. | 1396963013 | Attendant Care Provider | Cedar Lake, IN | 2007 |
| Melissa Duffman | 1366145690 | Pharmacy Technician | Lima, OH | 2023 |
| Amy Duffner, PT | 1164522322 | Pediatric Physical Therapist | Carlsbad, CA | 2006 |
| Caitlin Duffner, DPT | 1588459465 | Physical Therapist | Chicago, IL | 2025 |
| Cameron Duffner, MD | 1548849573 | Neurology Physician | Danville, IN | 2021 |
| Cortney Duffner, LMSW | 1356739403 | Clinical Social Worker | Lowell, MI | 2014 |
| Emily Duffner, MD | 1528761988 | Student in an Organized Health Care Education/Training Program | New York, NY | 2023 |
| Gerald Duffner, HAS 0741 | 1407605868 | Hearing Instrument Specialist | Mount Pleasant, SC | 2024 |
| Gregory Duffner, D.D.S. | 1225340375 | General Practice Dentistry | Homewood, IL | 2010 |
| Jolie Duffner | 1205687506 | Military Health Care Provider | Dayton, OH | 2024 |
| Kelly Duffner, D.C. | 1235499401 | Chiropractor | Cincinnati, OH | 2012 |
| Kimberly Duffner, APRN | 1700587433 | Family Nurse Practitioner | Boynton Beach, FL | 2023 |
| Madeline Duffner, PA-C | 1851099832 | Surgical Physician Assistant | Milwaukee, WI | 2023 |
| Patricia Duffner, MD | 1942271960 | Neurology with Special Qualifications in Child Neurology Physician | Buffalo, NY | 2006 |
| Patrick Duffner | 1356203285 | Marriage & Family Therapist | San Diego, CA | 2025 |
| Rebekah Duffner, MA | 1730868464 | Professional Counselor | Savannah, GA | 2023 |
| Saskia Duffner | 1790579944 | Attendant Care Provider | Snohomish, WA | 2025 |
| Ulrich Duffner, M.D. | 1235342569 | Pediatric Hematology & Oncology Physician | Grand Rapids, MI | 2007 |
| Caitlin Duffney, CAITLIN | 1851712673 | Behavior Technician | Jacksonville, FL | 2013 |
| Calliegh Duffney | 1447998299 | Mental Health Counselor | Aitkin, MN | 2022 |
| Katie Duffney, MA, CCC-SLP | 1487421855 | Speech-Language Pathologist | Aberdeen, SD | 2023 |
| Kristen Duffney, BCBA | 1750672333 | Behavior Analyst | Jacksonville, FL | 2011 |
| Sunny Duffney, LMSW | 1609763044 | Clinical Social Worker | West Des Moines, IA | 2025 |
| Lauren Duffola, MA, CCC-SLP | 1902305410 | Speech-Language Pathologist | Pittsburgh, PA | 2018 |
| Carla Duffoo, D.O | 1043471014 | Gastroenterology Physician | Tampa, FL | 2008 |
| Frantz Duffoo, M.D. | 1669544953 | Nephrology Physician | Middletown, NY | 2006 |
| Anna Dufford, LMHC | 1093217069 | Counselor | Diamond Point, NY | 2018 |
| Elaine Dufford, LCSW | 1083193148 | Social Worker | Lewiston, ID | 2018 |
| Jennifer Dufford, CRNP | 1932568789 | Nurse Practitioner | Bloomsburg, PA | 2016 |
| Jessica Dufford, RDH | 1699294488 | Dental Hygienist | Queensbury, NY | 2017 |
| Megan Dufford, PSYD | 1063814283 | Clinical Psychologist | Southampton, PA | 2014 |
| Shawn Dufford, MD | 1093846891 | Anesthesiology Physician | Denver, CO | 2007 |
| Vanessa Dufford, LMSW | 1104414044 | Social Worker | Waterville, ME | 2021 |
| Bethany Duffour, LPC | 1043978448 | Mental Health Counselor | Glen Allen, VA | 2021 |
| Rory Duffour, M.D. | 1730149329 | Family Medicine Physician | Slidell, LA | 2006 |
| Madeleine Duffourc, APRN, FNP-C | 1225850233 | Nurse Practitioner | Pensacola, FL | 2024 |
| Rene Duffourc, M.D. | 1720209588 | Psychiatry Physician | Holiday Island, AR | 2007 |
| Anna Duffrin | 1609253970 | Athletic Trainer | Alliance, OH | 2015 |
| Haley Duffrin, LMFT | 1457007494 | Marriage & Family Therapist | University Place, WA | 2022 |
| Henry Duffrin, MD | 1750358198 | Diagnostic Radiology Physician | Wauwatosa, WI | 2006 |
| Patty Duffrin, RN | 1831554542 | Registered Nurse | Wausau, WI | 2015 |
| Ludovic Duffroy, APRN | 1932655032 | Nurse Practitioner | Concord, NH | 2016 |
| Ashley Duffus, LMT | 1194217562 | Massage Therapist | Bellingham, WA | 2018 |
| Claudette Duffus | 1548092224 | Attendant Care Provider | Snellville, GA | 2024 |
| Davhia Duffus | 1649191644 | Registered Nurse | Los Angeles, CA | 2026 |
| Deandrea Duffus, D.P.M | 1073808200 | Foot & Ankle Surgery Podiatrist | Debary, FL | 2011 |
| Emily Duffus, MD | 1043069677 | Student in an Organized Health Care Education/Training Program | Newark, NJ | 2024 |
| Erin Duffus | 1982322731 | Family Medicine Physician | Hardy, VA | 2022 |
| Jacob Duffus, PHARM. D | 1922746387 | Pharmacist | Feeding Hills, MA | 2022 |
| Kevin Duffus, MSPT, CSCS, CERT MDT | 1902847049 | Physical Therapist | Cambridge, MD | 2006 |
| Kimberly Duffus, RN | 1417765785 | Registered Nurse | Maplewood, NJ | 2024 |
| Linea Duffus, ACNPC-AG | 1396539540 | Gerontology Nurse Practitioner | Nokesville, VA | 2025 |
| Lydia Duffus | 1578109088 | Family Nurse Practitioner | Bronx, NY | 2019 |
| Lyndsay Duffus, AU.D. | 1124098629 | Audiologist | Portland, OR | 2006 |
| Monique Duffus | 1942003710 | Student in an Organized Health Care Education/Training Program | Montgomery, OH | 2025 |
| Natalie Duffus | 1447187372 | Registered Nurse | Clark, NJ | 2026 |
| Sade Duffus | 1386146371 | Licensed Practical Nurse | Irvington, NJ | 2018 |
| Sara Duffus, MD | 1770979965 | Pediatric Endocrinology Physician | Chapel Hill, NC | 2015 |
| Sellina Duffus | 1407590896 | Behavior Technician | Mount Dora, FL | 2022 |
| Shamona Duffus | 1356648950 | Clinical Social Worker | Tallahassee, FL | 2011 |
| Umari Duffus, O.D. | 1508178153 | Optometrist | Sparks, NV | 2010 |
| Wayne Duffus, M.D. | 1174590392 | Infectious Disease Physician | Wilmington, DE | 2006 |
| Youlen Duffus, PMHNP | 1174303093 | Psychiatric/Mental Health Nurse Practitioner | Hyattsville, MD | 2023 |
| Doriana Duffus Gamez | 1003748013 | Behavior Technician | Port Charlotte, FL | 2026 |
| Natane Duffus Headley, FNP | 1851190599 | Family Nurse Practitioner | Middletown, VA | 2025 |
| Aaron Duffy, D.D.S. | 1043686074 | Dentist | Roseville, CA | 2015 |
| Abby Duffy, PT, DPT | 1689352221 | Physical Therapist | Omaha, NE | 2023 |
| Abby Duffy, M.ED., BCBA | 1881077089 | Behavior Analyst | Fletcher, NC | 2015 |
| Abigail Duffy, BCBA | 1063006807 | Behavior Technician | Plainfield, IN | 2021 |
| Abigail Duffy, MS CCC-SLP | 1407571995 | Speech-Language Pathologist | Crystal Lake, IL | 2022 |
| Abigail Duffy, MS, RD, LDN | 1578423844 | Registered Dietitian | Walpole, MA | 2025 |
| Abraham Duffy | 1457220469 | Community Health Worker | Santa Fe, NM | 2025 |
| Adrian Duffy, M.D. | 1437226503 | Psychiatry Physician | Anoka, MN | 2006 |
| Aimee Duffy, M.D. | 1528033081 | Family Medicine Physician | Clemson, SC | 2006 |
| Alan Duffy, CSA | 1952320988 | Specialist | Aurora, CO | 2006 |
| Alesia Duffy, R.N. | 1295905883 | Registered Nurse | North Little Rock, AR | 2008 |
| Alexander Duffy, PA-C | 1053774257 | Physician Assistant | Lewisberry, PA | 2016 |
| Alexander Duffy, MD | 1639732464 | Otolaryngology Physician | Philadelphia, PA | 2019 |
| Alexandra Duffy, D.O. | 1316212814 | Neurology Physician | Sacramento, CA | 2012 |
| Alexandra Duffy | 1730900788 | Behavior Technician | El Segundo, CA | 2024 |
| Alexandra Duffy, PSY.D. | 1891856571 | Clinical Psychologist | Charlotte, NC | 2006 |
| Alexus Duffy, PT | 1720756083 | Physical Therapist | Little Rock, AR | 2021 |
| Alfreda Duffy, LPN | 1841596889 | Licensed Practical Nurse | Stockbridge, GA | 2011 |
| Alice Duffy, LCSW | 1619180858 | Clinical Social Worker | Eugene, OR | 2007 |
| Alisha Duffy, NP | 1366266249 | Family Nurse Practitioner | Boston, MA | 2024 |
| Alisha Duffy | 1821731191 | Social Worker | Rockville Centre, NY | 2022 |
| Alison Duffy | 1912379280 | Pharmacist | Elkridge, MD | 2015 |
| Allie Duffy, DPT | 1326416686 | Physical Therapist | Somerville, MA | 2015 |
| Allison Duffy | 1063730471 | Clinical Social Worker | Hamburg, NY | 2010 |
| Allison Duffy | 1396692927 | Registered Nurse | Hartselle, AL | 2026 |
| Allison Duffy, AUD | 1407540107 | Audiologist | Charleston, WV | 2023 |
| Allison Duffy | 1487576971 | Pharmacist | Nashville, TN | 2026 |
| Allison Duffy, M.D. | 1548484835 | Anesthesiology Physician | San Ramon, CA | 2007 |
| Allison Duffy | 1588302335 | Behavior Analyst | Hamden, CT | 2022 |
| Allison Duffy, PA | 1588420566 | Physician Assistant | Wayne, NJ | 2024 |
| Allison Duffy | 1699691550 | Speech-Language Pathologist | Chicago, IL | 2026 |
| Allyson Duffy, MD | 1154399202 | Pediatric Adolescent Medicine Physician | West Hartford, CT | 2006 |
| Allyson Duffy, RPH | 1679085641 | Pharmacist | Columbus, OH | 2017 |
| Alvina Duffy | 1124971627 | Doula | Fitchburg, MA | 2026 |
| Alyssa Duffy | 1982126850 | Behavior Technician | Woburn, MA | 2017 |
| Amanda Duffy | 1033794284 | Speech-Language Pathologist | Brooklyn, NY | 2021 |
| Amanda Duffy, M.ED.,BCBA | 1174988059 | Behavior Analyst | Newtown Square, PA | 2015 |
| Amanda Duffy, NP-C | 1831601798 | Family Nurse Practitioner | Nashville, TN | 2017 |
| Amanda Duffy, NP | 1932627510 | Family Nurse Practitioner | Springfield, MA | 2017 |
| Amanda Duffy, L.I.C.S.W. | 1972738417 | Clinical Social Worker | Somerville, MA | 2009 |
| Amira Duffy | 1497339550 | Behavior Technician | Murrieta, CA | 2021 |
| Amy Duffy, PT, MS | 1548385008 | Physical Therapist | Bethlehem, GA | 2007 |
| Amy Duffy, LSW | 1750346797 | Social Worker | Montrose, PA | 2006 |
| Amy Duffy, LCPC | 1932259983 | Mental Health Counselor | Pontiac, IL | 2007 |
| Amy Duffy, PHD LCMHCS NCC CCTP | 1982903407 | Mental Health Counselor | Raleigh, NC | 2011 |
| Andrea Duffy, LVN | 1669064697 | Licensed Vocational Nurse | Copperas Cove, TX | 2021 |
| Andrea Duffy | 1689178261 | Behavior Analyst | Oakland, CA | 2018 |
| Andrea Duffy, L.M.T | 1760622948 | Mechanotherapist | Hilliard, OH | 2009 |
| Andrew Duffy | 1205268992 | Student in an Organized Health Care Education/Training Program | Berkeley, CA | 2013 |
| Andrew Duffy | 1245083500 | Student in an Organized Health Care Education/Training Program | Rochester, NY | 2024 |
| Andrew Duffy, M. D. | 1386686152 | Surgery Physician | New Haven, CT | 2006 |
| Andrew Duffy, PA-C | 1679839500 | Physician Assistant | Griffin, GA | 2012 |
| Andrew Duffy, MD | 1699775841 | Anesthesiology Physician | Mount Kisco, NY | 2005 |
| Andrew Duffy | 1831555044 | Clinical Social Worker | Tulsa, OK | 2016 |
| Angela Duffy, LCSW | 1225379720 | Clinical Social Worker | Franklinton, LA | 2013 |
| Angela Duffy, RPH | 1285910760 | Pharmacist | Indianapolis, IN | 2011 |
| Angela Duffy, CRNA | 1427287226 | Certified Registered Nurse Anesthetist | Green Bay, WI | 2009 |
| Ann Duffy, P.T. | 1316008824 | Physical Therapist | New York, NY | 2006 |
| Ann Duffy, M.S. CCC SLP | 1346453206 | Speech-Language Pathologist | Louisville, KY | 2007 |
| Ann Duffy | 1366116378 | Social Worker | Greenfield, MA | 2021 |
| Ann Duffy, OTR/L | 1881018455 | Pediatric Occupational Therapist | Dublin, OH | 2014 |
| Ann Duffy | 1922080332 | Psychiatric/Mental Health Registered Nurse | Albuquerque, NM | 2005 |
| Anna Duffy, PA-C | 1174832646 | Physician Assistant | Chicago, IL | 2010 |
| Anna Duffy, COTA/L | 1861785818 | Occupational Therapy Assistant | Henderson, NV | 2011 |
| Anne Duffy, MOT, OTR/L | 1780345611 | Pediatric Occupational Therapist | Chicago, IL | 2022 |
| Ariana Duffy | 1306722269 | Personal Care Attendant | Norfolk, NE | 2025 |
| Arlene Duffy, M.ED | 1750438206 | Professional Counselor | Fitchburg, MA | 2007 |
| Arthur Duffy, ATC, PT | 1578556130 | Sports Physical Therapist | Chester, PA | 2005 |
| Audrey Duffy, FNP | 1073879441 | Adult Health Nurse Practitioner | Astoria, NY | 2012 |
| Autumn Duffy | 1902726441 | Professional Counselor | Williamsburg, VA | 2026 |
| Bailey Duffy, DMD | 1558046995 | Pediatric Dentistry | Hanahan, SC | 2023 |
| Barbara Duffy, M.D. | 1023085156 | Pediatrics Physician | Lutherville, MD | 2006 |
| Barbara Duffy, APRN | 1053408187 | Pediatric Nurse Practitioner | Nashville, TN | 2006 |
| Barbara Duffy, APN | 1285046441 | Psychiatric/Mental Health Registered Nurse | North Haledon, NJ | 2014 |
| Barbara Duffy, CRNA | 1417323809 | Certified Registered Nurse Anesthetist | Austin, TX | 2015 |
| Barbara Duffy, P.T. | 1740300706 | Physical Therapist | Mount Prospect, IL | 2007 |
| Barbara Duffy, R.N. | 1821240987 | Registered Nurse | Sacramento, CA | 2008 |
| Barbara Duffy, CRNP-PMH | 1841460086 | Psychiatric/Mental Health Nurse Practitioner | Towson, MD | 2008 |
| Baron Duffy, PT, DPT, OCS | 1902077399 | Physical Therapist | North Falmouth, MA | 2008 |
| Baylee Duffy | 1861318255 | Behavior Technician | Oklahoma City, OK | 2026 |
| Benjamen Duffy | 1558255919 | Professional Counselor | Boulder, CO | 2025 |
| Benjamin Duffy, NP | 1083487417 | Family Nurse Practitioner | Northampton, MA | 2023 |
| Benjamin Duffy, D.O. | 1144210857 | Obesity Medicine (Internal Medicine) Physician | Neenah, WI | 2005 |
| Benjamin Duffy, NP | 1184090946 | Family Nurse Practitioner | Memphis, TN | 2015 |
| Bennett Duffy | 1093432932 | Behavior Technician | Melbourne, FL | 2022 |
| Beth Duffy, COTA | 1093015349 | Occupational Therapy Assistant | Middletown, NY | 2010 |
| Beth Duffy | 1760658561 | Speech-Language Pathologist | Saint Louis, MO | 2008 |
| Billie Duffy, LPC-S | 1174108252 | Professional Counselor | Lubbock, TX | 2021 |
| Blake Duffy, MD | 1942887252 | Anesthesiology Physician | Baltimore, MD | 2021 |
| Brandi Duffy | 1497603369 | Behavior Technician | Napa, CA | 2026 |
| Brandi Duffy, IBCLC RN | 1780335786 | Lactation Consultant (Registered Nurse) | Ottawa, IL | 2022 |
| Brandon Duffy, CADC I | 1336610674 | Addiction (Substance Use Disorder) Counselor | San Diego, CA | 2018 |
| Brandon Duffy | 1700593449 | Student in an Organized Health Care Education/Training Program | Oakland, CA | 2022 |
| Brandon Duffy | 1750879763 | Emergency Medicine Physician | Enumclaw, WA | 2018 |
| Brandon Duffy | 1922746072 | Athletic Trainer | Seattle, WA | 2022 |
| Brandy Duffy, RD | 1821911413 | Registered Dietitian | Florence, SC | 2026 |
| Brendan Duffy, M.D. | 1497712699 | Interventional Cardiology Physician | Canton, OH | 2006 |
| Brendan Duffy, DMD | 1861328197 | Dentist | Kalamazoo, MI | 2026 |
| Brenna Duffy | 1669961967 | Pharmacist | San Jacinto, CA | 2018 |
| Brian Duffy, PA | 1053318378 | Medical Physician Assistant | Colorado Springs, CO | 2005 |
| Brian Duffy, DPT, OCS | 1134318009 | Physical Therapist | Bradenton, FL | 2007 |
| Brian Duffy | 1144821976 | Community Health Worker | Homer, AK | 2020 |
| Brian Duffy | 1174117188 | Peer Specialist | Xenia, OH | 2021 |
| Brian Duffy | 1417451030 | Internal Medicine Physician | Houston, TX | 2018 |
| Brian Duffy, LMHC | 1447318811 | Mental Health Counselor | West Newton, MA | 2006 |
| Brian Duffy, DPT | 1538105275 | Physical Therapist | Hammonton, NJ | 2006 |
| Brian Duffy, M.D. | 1568721280 | Anesthesiology Physician | Syracuse, NY | 2012 |
| Brian Duffy, DMD | 1588298434 | Pediatric Dentistry | Helena, MT | 2020 |
| Brian Duffy, BA | 1679777601 | Mental Health Counselor | Kenosha, WI | 2007 |
| Brian Duffy | 1902785520 | Physician Assistant | Mount Pleasant, MI | 2025 |
| Brian Duffy, MD | 1952569022 | Pediatric Surgery Physician | Wilmington, DE | 2008 |
| Brianna Duffy | 1073259404 | Behavior Technician | South Yarmouth, MA | 2022 |
| Brianna Duffy, R.N. | 1295285732 | Rehabilitation Registered Nurse | New York, NY | 2016 |
| Brianna Duffy, LMSW | 1396577524 | Clinical Social Worker | Sumter, SC | 2024 |
| Briar Duffy, M.D. | 1275578452 | Internal Medicine Physician | Minneapolis, MN | 2006 |
| Bridget Duffy | 1336804137 | Occupational Therapist | San Francisco, CA | 2021 |
| Bridget Duffy | 1437625886 | Mental Health Counselor | Closter, NJ | 2018 |
| Bridget Duffy, M.S | 1528103942 | Speech-Language Pathologist | Palos Heights, IL | 2007 |
| Bridget Duffy, MD | 1568591923 | Pediatrics Physician | Spokane, WA | 2007 |
| Bridget Duffy | 1861073595 | Case Manager/Care Coordinator | Columbus, OH | 2021 |
| Brittany Duffy, MSW | 1043783541 | Social Worker | Spokane, WA | 2019 |
| Brittany Duffy, RD, LDN | 1063924033 | Registered Dietitian | Providence, RI | 2017 |
| Brittany Duffy | 1457123697 | Certified Registered Nurse Anesthetist | Virginia Beach, VA | 2023 |
| Brittany Duffy | 1760906622 | Behavior Analyst | Columbus, OH | 2017 |
| Brittney Duffy, M. ED | 1568293454 | Behavior Technician | Southborough, MA | 2024 |
| Brooke Duffy, FNP | 1174116024 | Family Nurse Practitioner | New Orleans, LA | 2021 |
| Brooke Duffy, OTR/L | 1194226399 | Occupational Therapist | Walden, NY | 2018 |
| Brooke Duffy, DPT, ATC | 1235692781 | Physical Therapist | Green Bay, WI | 2019 |
| Brooke Duffy | 1467162073 | Behavior Technician | Grand Rapids, MI | 2022 |
| Brooke Duffy | 1720739576 | Certified Registered Nurse Anesthetist | Cleveland, OH | 2022 |
| Bruce Duffy, D.O. | 1366589905 | Geriatric Medicine (Family Medicine) Physician | Salem, OR | 2007 |
| Bryn Duffy, MD | 1235243775 | Internal Medicine Physician | San Rafael, CA | 2006 |
| Caden Duffy, MD | 1366281164 | Otolaryngology Physician | Iowa City, IA | 2024 |
| Caitlin Duffy | 1427974062 | Counselor | Seattle, WA | 2026 |
| Caitlin Duffy, PHARMD | 1528467230 | Pharmacist | Jacksonville, FL | 2014 |
| Caitlin Duffy | 1598583411 | Acute Care Nurse Practitioner | Philadelphia, PA | 2024 |
| Caitlin Duffy, LCSW | 1841587326 | Clinical Social Worker | Jeffersonville, IN | 2011 |
| Caitlyn Duffy, M.D. | 1265886188 | Pediatric Hematology & Oncology Physician | Memphis, TN | 2016 |
| Caitlyn Duffy | 1396662532 | Speech-Language Pathologist | Wilmington, NC | 2026 |
| Calli Duffy | 1578936928 | Case Manager/Care Coordinator | Wasilla, AK | 2015 |
| Cameron Duffy, M.D. | 1306874839 | Family Medicine Physician | Martinsburg, WV | 2006 |
| Cameron Duffy | 1972232874 | Mental Health Counselor | Plymouth, MA | 2022 |
| Campbell Duffy, BSN, RN, MSN, FNP | 1598452633 | Family Nurse Practitioner | Denver, CO | 2023 |
| Candace Duffy | 1285231969 | Mental Health Counselor | Joliet, IL | 2020 |
| Caoimhe Duffy, MD,MSC | 1386250041 | Anesthesiology Physician | Philadelphia, PA | 2020 |
| Carla Duffy, TSHH | 1538451570 | Speech-Language Assistant | Nanuet, NY | 2011 |
| Carlee Duffy, LSW | 1629886296 | Social Worker | Scottsdale, AZ | 2024 |
| Carlena Duffy | 1326681727 | Peer Specialist | Stillwater, OK | 2019 |
| Carlin Duffy, NP, CNM | 1528783552 | Nurse Practitioner | Statesville, NC | 2022 |
| Carly Duffy, MPH, RD/LD | 1124998745 | Registered Dietitian | Charleston, SC | 2025 |
| Carol Duffy, OTR/L, MA ABS | 1346435203 | Occupational Therapist | Port Townsend, WA | 2007 |
| Carol Duffy, D.O. | 1366571663 | Cardiovascular Disease Physician | Shaftsbury, VT | 2007 |
| Caroline Duffy | 1295535706 | Mental Health Counselor | Chelmsford, MA | 2025 |
| Caroline Duffy, MD | 1376248435 | Student in an Organized Health Care Education/Training Program | Chula Vista, CA | 2023 |
| Caroline Duffy | 1730766254 | Physical Therapist | Rochester, NY | 2021 |
| Carolyn Duffy, M.S., CCC-SLP | 1215518188 | Speech-Language Pathologist | Wakefield, MA | 2021 |
| Carrie Duffy, D.O. | 1336467596 | Obstetrics & Gynecology Physician | Kansas City, MO | 2010 |
| Casey Duffy | 1114890886 | Occupational Therapist | Wilkes Barre, PA | 2025 |
| Cassandra Duffy, LAC | 1609414531 | Professional Counselor | Gilbert, AZ | 2019 |
| Cassandra Duffy, M.D. M.P.H. | 1770840274 | Maternal & Fetal Medicine Physician | Boston, MA | 2012 |
| Cassie Duffy | 1912790809 | Marriage & Family Therapist | Valencia, CA | 2025 |
| Catharine Duffy, RPH | 1184976003 | Pharmacist | Bloomsbury, NJ | 2012 |
| Catherine Duffy, PT | 1033812904 | Physical Therapist | Fort Meade, SD | 2023 |
| Catherine Duffy | 1194326173 | Occupational Therapist | Waltham, MA | 2020 |
| Catherine Duffy, MD | 1215905922 | Pediatric Cardiology Physician | Chicago, IL | 2006 |
| Catherine Duffy, APRN-BC | 1255488003 | Adult Health Nurse Practitioner | Danvers, MA | 2007 |
| Catherine Duffy | 1336333061 | Social Worker | Chelsea, MA | 2007 |
| Catherine Duffy, OTR | 1548471352 | Occupational Therapist | New York, NY | 2007 |
| Cathleen Duffy, M.S.N., A.P.N. | 1275522658 | Pediatric Nurse Practitioner | Howell, NJ | 2005 |
| Cecilia Duffy, DC | 1972603090 | Chiropractor | Geneva, OH | 2006 |
| Celina Duffy | 1831928746 | Community Health Worker | Los Angeles, CA | 2024 |
| Chandran Duffy, LMHC | 1578014189 | Mental Health Counselor | Cedar Rapids, IA | 2016 |
| Charissa Duffy, APRN | 1689160442 | Psychiatric/Mental Health Nurse Practitioner | Medina, OH | 2018 |
| Charles Duffy, MD, PHD | 1376578179 | Neurology Physician | Hershey, PA | 2006 |
| Chelsea Duffy | 1265063473 | Occupational Therapist | Oakhurst, NJ | 2020 |
| Chelsea Duffy, MD, FAAP | 1801383823 | Pediatrics Physician | Richardson, TX | 2018 |
| Cherri Duffy, LMFT | 1285757732 | Marriage & Family Therapist | Glendale, CA | 2007 |
| Cheryl Duffy | 1750388898 | Pediatrics Physician | Hermitage, PA | 2005 |
| Chiye Duffy, MPT, C/NDT, CIMI | 1912280447 | Pediatric Physical Therapist | Port Orange, FL | 2011 |
| Chloe Duffy, RBT | 1629797972 | Behavior Technician | Brownsboro, AL | 2022 |
| Chris Duffy, D.C. | 1265588701 | Chiropractor | Lincoln, NE | 2007 |
| Chris Duffy, L.M. | 1568503084 | Midwife | Houston, TX | 2007 |
| Christina Duffy | 1144205006 | Military Health Care Provider | Buzzards Bay, MA | 2005 |
| Christina Duffy, CRNA | 1467613117 | Certified Registered Nurse Anesthetist | Madison, WI | 2008 |
| Christina Duffy, LMFT | 1467819433 | Marriage & Family Therapist | Fair Oaks, CA | 2016 |
| Christina Duffy, DPT | 1619376225 | Physical Therapist | Lake Mary, FL | 2014 |
| Christina Duffy, MOTR/L | 1952778599 | Occupational Therapist | Brookfield, WI | 2015 |
| Christine Duffy, LPC | 1124432331 | Professional Counselor | New Haven, CT | 2014 |
| Christine Duffy, ATC, LAT | 1255007134 | Athletic Trainer | Spanish Fork, UT | 2021 |
| Christine Duffy, MD | 1326087677 | Internal Medicine Physician | Riverside, RI | 2006 |
| Christine Duffy, MSW | 1356664304 | Clinical Social Worker | Raleigh, NC | 2010 |
| Christine Duffy, MS,CCC-SLP | 1407936636 | Speech-Language Pathologist | Wilmington, NC | 2006 |
| Christine Duffy, MSC, LAC | 1417411844 | Mental Health Counselor | Tucson, AZ | 2019 |
| Christine Duffy, MSPT | 1730385873 | Physical Therapist | Falmouth, MA | 2007 |
Source: CMS National Plan and Provider Enumeration System (NPPES) (download.cms.gov). A listing is not a recommendation: check a license with the state board (license lookups).