Providers Neil Mast, PA-C to George Master, DMD
300 individual NPIs in the federal registry, part 13,785 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. 100 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Neil Mast, PA-C | 1598313793 | Physician Assistant | Bellefontaine, OH | 2019 |
| Nicholas Mast, MD | 1932399698 | Orthopaedic Surgery Physician | Novato, CA | 2007 |
| Nicole Mast, LSW | 1205289451 | Clinical Social Worker | Wooster, OH | 2016 |
| Olivia Mast | 1033008933 | Registered Nurse | Spokane, WA | 2025 |
| Olivia Mast | 1982382255 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Durham, NC | 2023 |
| Pamela Mast | 1487102604 | Other Technician | Sandusky, MI | 2016 |
| Patricia Mast | 1033490164 | Pharmacist | Huntington, WV | 2011 |
| Patricia Mast | 1780235309 | Mental Health Counselor | San Diego, CA | 2019 |
| Paul Mast, DO | 1992644389 | Student in an Organized Health Care Education/Training Program | Huntington, NY | 2026 |
| Paula Mast | 1700548856 | School Registered Nurse | Dover, DE | 2021 |
| Peter Mast, CPSW | 1114754223 | Case Manager/Care Coordinator | Santa Fe, NM | 2024 |
| Peyton Mast, FNP | 1730981580 | Family Nurse Practitioner | Columbus, OH | 2025 |
| Rachel Mast | 1669214847 | Behavior Technician | Holland, MI | 2024 |
| Rachel Mast, CPM, LM | 1730445974 | Midwife | Boise, ID | 2012 |
| Rachel Mast, D.O. | 1952552812 | Internal Medicine Physician | Beavercreek, OH | 2008 |
| Rachel Mast | 1972004174 | Behavior Technician | El Cajon, CA | 2018 |
| Rodney Mast, RPH | 1902995921 | Pharmacist | Berlin, OH | 2006 |
| Rorra Mast | 1619651601 | Behavior Technician | Woodbury, MN | 2023 |
| Ryan Mast, D.O. | 1376714675 | Psychiatry Physician | Dayton, OH | 2008 |
| Ryan Mast, TLLP | 1710609896 | Psychologist | Southfield, MI | 2022 |
| Samantha Mast, M.D. | 1962661595 | Maternal & Fetal Medicine Physician | Cincinnati, OH | 2008 |
| Samuel Mast, M.D. | 1780970426 | Internal Medicine Physician | Fort Collins, CO | 2011 |
| Sarah Mast | 1366183675 | Psychologist | Temecula, CA | 2022 |
| Sarah Mast, RN | 1609515485 | Registered Nurse | Canandaigua, NY | 2022 |
| Sarah Mast, LCSW | 1821431792 | Clinical Social Worker | Austin, TX | 2013 |
| Shari Mast, PT | 1184625386 | Physical Therapist | Harrisonburg, VA | 2005 |
| Sharon Mast, LICSW | 1700520095 | Clinical Social Worker | Seattle, WA | 2022 |
| Shekinah Mast, AUD | 1205234705 | Audiologist | Seaford, DE | 2014 |
| Shelby Mast, DO | 1851898456 | Pediatrics Physician | Skowhegan, ME | 2018 |
| Shelley Mast, LVN | 1558834812 | Licensed Vocational Nurse | Fresno, CA | 2019 |
| Sherry Mast, NUTRITIONIST | 1447083290 | Nutritionist | Watsontown, PA | 2024 |
| Stephanie Mast | 1336604313 | Licensed Vocational Nurse | Ceres, CA | 2019 |
| Stephen Mast, L.M.S.W. | 1558671735 | Social Worker | West Sayville, NY | 2010 |
| Steven Mast, MD | 1174522429 | Interventional Cardiology Physician | Traverse City, MI | 2005 |
| Susie Mast, CF-SLP | 1427934041 | Speech-Language Pathologist | Atlanta, GA | 2025 |
| Sylvia Mast, DO | 1023959079 | Student in an Organized Health Care Education/Training Program | Tacoma, WA | 2026 |
| Tara Mast, PT, DPT | 1285181941 | Physical Therapist | Mount Pleasant, SC | 2016 |
| Taylor Mast | 1497634109 | Speech-Language Pathologist | San Ramon, CA | 2025 |
| Taylor Mast, LCSW-C | 1528933660 | Clinical Social Worker | Severna Park, MD | 2025 |
| Taylor Mast, DMD | 1700575701 | Dentist | Wilmington, NC | 2023 |
| Terry Mast, MNT | 1518455930 | Nutritionist | Longmont, CO | 2018 |
| Thomas Mast | 1669889556 | Pharmacist | Kokomo, IN | 2014 |
| Tracy Mast, APRN | 1710362538 | Pediatric Nurse Practitioner | Ponca City, OK | 2015 |
| Twila Mast, COTA/L | 1114174430 | Occupational Therapy Assistant | Pickerington, OH | 2008 |
| Vicki Mast, PSY.D. | 1083958367 | School Psychologist | Hawthorne, NY | 2012 |
| Vivian Mast, PT | 1740250620 | Physical Therapist | Raleigh, NC | 2006 |
| Walter Mast | 1386255842 | Behavior Technician | Farmington Hills, MI | 2020 |
| William Mast, FNP-C | 1659089811 | Family Nurse Practitioner | Greenville, TX | 2022 |
| Wilma Mast, PCC | 1053973040 | Professional Counselor | Mansfield, OH | 2019 |
| Brigitta Mast Drolet, M.D. | 1457738999 | Obstetrics & Gynecology Physician | Bellingham, WA | 2015 |
| Linda Mast-Cataldi, RN | 1740737832 | Registered Nurse | Moraine, OH | 2016 |
| Beatrice Mastacciuola, RPH | 1598943623 | Pharmacist | Oyster Bay, NY | 2008 |
| Leonardo Mastache, APRN | 1104699297 | Psychiatric/Mental Health Nurse Practitioner | Naples, FL | 2023 |
| Nicole Mastacouris, MD | 1992400014 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2023 |
| Jennifer Mastafiak-Carron, MA, CCC-SLP | 1518272731 | Speech-Language Pathologist | Ardsley, NY | 2010 |
| Abbigail Mastagh | 1750096541 | Behavior Technician | Muncie, IN | 2023 |
| Victor Mastaglio, DDS | 1972789949 | Dentist | Grand Rapids, MI | 2008 |
| Chelsea Mastagni | 1205698859 | Student in an Organized Health Care Education/Training Program | Kirksville, MO | 2024 |
| Ashley Mastaj, DPT | 1720533383 | Physical Therapist | Woburn, MA | 2016 |
| Lynann Mastaj, DMD | 1447590344 | Orthodontics and Dentofacial Orthopedics Dentistry | Bryn Mawr, PA | 2013 |
| Michael Mastaj | 1073957601 | Physical Therapist | Sparta, NJ | 2013 |
| Enea Mastaka | 1336033240 | Mental Health Counselor | Buffalo Grove, IL | 2025 |
| Sophia Mastakas, LCSW | 1386511764 | Clinical Social Worker | Alexandria, VA | 2025 |
| Thomas Mastakouris, M.D | 1144277443 | Internal Medicine Physician | Astoria, NY | 2006 |
| Stephanie Mastal | 1124849773 | School Psychologist | Annapolis, MD | 2024 |
| Michele Mastalarz, MSW, LCSW | 1851668669 | Clinical Social Worker | Milwaukee, WI | 2011 |
| Samantha Mastaler | 1740062082 | Clinical Social Worker | Denver, CO | 2023 |
| Blake Mastalerz, MD | 1093658411 | Student in an Organized Health Care Education/Training Program | Memphis, TN | 2026 |
| Frank Mastalerz, DDS | 1114132552 | General Practice Dentistry | Oakland, MD | 2007 |
| Joanna Mastalerz | 1376917914 | Physical Therapist | Columbia, TN | 2015 |
| Jordan Mastalerz, PA-C | 1508417205 | Physician Assistant | Franklin, TN | 2019 |
| Justyna Mastalerz, PHARMD | 1780467076 | Pharmacist | Hines, IL | 2023 |
| Kaitlin Mastalerz, PA-C | 1023404886 | Physician Assistant | Lake Forest, IL | 2015 |
| Katarzyna Mastalerz, M.D. | 1861514275 | Hospitalist Physician | Denver, CO | 2007 |
| Krystyna Mastalerz | 1548660657 | Massage Therapist | Grayslake, IL | 2014 |
| Kylie Mastalerz, MD | 1801737382 | Student in an Organized Health Care Education/Training Program | Memphis, TN | 2026 |
| Magdalena Mastalerz | 1114554177 | Student in an Organized Health Care Education/Training Program | Lexington, KY | 2020 |
| Mary Mastalerz, MSW | 1487914594 | Clinical Social Worker | Springfield, MA | 2012 |
| Megan Mastalerz | 1093695447 | Physician Assistant | Elmhurst, IL | 2025 |
| Megan Mastalerz, PHD | 1669728168 | Clinical Psychologist | Baltimore, MD | 2012 |
| Paige Mastalerz, MD | 1487358461 | Student in an Organized Health Care Education/Training Program | Springfield, MA | 2023 |
| William Mastalerz, PT | 1316903552 | Physical Therapist | Franklin, TN | 2006 |
| Ali Mastali, M.D. | 1821401258 | General Practice Physician | San Juan, PR | 2014 |
| Farid Mastali, DMD | 1881075760 | General Practice Dentistry | Altamonte Springs, FL | 2015 |
| Kourosh Mastali, M.D. | 1518907310 | Interventional Cardiology Physician | Towson, MD | 2006 |
| Macie Mastali | 1114713369 | Behavior Technician | Los Angeles, CA | 2025 |
| Mohammad Mastali, M.D. | 1689762924 | Gastroenterology Physician | Davenport, FL | 2006 |
| Brooke Mastalir, OTR | 1710185715 | Occupational Therapist | Beatrice, NE | 2007 |
| Donna Mastalir | 1073044160 | Professional Counselor | Oklahoma City, OK | 2017 |
| Richelle Mastalir | 1447726575 | Addiction (Substance Use Disorder) Counselor | Waukesha, WI | 2018 |
| Kira Mastalka | 1598479446 | Community Health Worker | Reno, NV | 2023 |
| Caryn Mastalli, FNP | 1538242789 | Anesthesiology Physician | Durham, NC | 2006 |
| John Mastalski, D.O. | 1538188446 | Emergency Medicine Physician | Riviera Beach, FL | 2006 |
| Julia Mastalski | 1700342698 | Clinical Social Worker | Rio Grande, NJ | 2019 |
| Richard Mastalski, OTR/L | 1720541287 | Occupational Therapist | Bridgeport, WV | 2019 |
| Alina Mastan, M.D. | 1285620245 | Internal Medicine Physician | New York, NY | 2005 |
| Asif Mastan, MD | 1689985020 | Hospitalist Physician | Matthews, NC | 2010 |
| Momina Mastan | 1407496250 | Registered Nurse | Ithaca, NY | 2020 |
| Linda Mastan-Kamath, RN | 1518636380 | Administrator Registered Nurse | Albany, NY | 2021 |
| Mozmin Mastan-Olivera | 1184447096 | Community Health Worker | Oakland, CA | 2024 |
| Alexa Mastando | 1215525209 | Speech-Language Pathologist | Pooler, GA | 2021 |
| Denise Mastando | 1558542159 | Physical Therapist | Riverhead, NY | 2007 |
| Madison Mastando | 1841028156 | Student in an Organized Health Care Education/Training Program | Ocean, NJ | 2024 |
| Nicole Mastando, DC | 1871574392 | Chiropractor | Marshfield, MA | 2005 |
| Toni-Ann Mastando | 1861807596 | Mental Health Counselor | Poughkeepsie, NY | 2014 |
| Alison Mastandrea, RN | 1235467952 | Medical-Surgical Registered Nurse | Roscoe, NY | 2009 |
| Angela Mastandrea, CPS | 1669351417 | Peer Specialist | Malden, MA | 2025 |
| Carmine Mastandrea, D.D.S. | 1336488592 | Dentist | Pittsburgh, PA | 2013 |
| Chastity Mastandrea | 1932632015 | Other Technician | Pittsburgh, PA | 2017 |
| Domenico Mastandrea, D.O. | 1013236389 | Emergency Medicine Physician | Poughkeepsie, NY | 2010 |
| Ellexa Mastandrea | 1164385290 | Behavior Technician | Lithia, FL | 2025 |
| Frank Mastandrea, M.D. | 1538165444 | Specialist | Tampa, FL | 2005 |
| Gabrielle Mastandrea | 1891464202 | Speech-Language Assistant | Lynchburg, VA | 2021 |
| Jessica Mastandrea | 1235702101 | Behavior Technician | Lithia, FL | 2021 |
| Jessica Mastandrea, FNP | 1568063543 | Family Nurse Practitioner | Ellenville, NY | 2020 |
| John Mastandrea, M.D. | 1518999697 | Radiation Oncology Physician | Easton, MD | 2006 |
| Joseph Mastandrea, D.O. | 1649262924 | Internal Medicine Physician | Kettering, OH | 2005 |
| Katherine Mastandrea | 1073192456 | Student in an Organized Health Care Education/Training Program | Pittsburgh, PA | 2021 |
| Kurtus Mastandrea | 1760187041 | Case Manager/Care Coordinator | Akron, OH | 2023 |
| Renee Mastandrea, RBT | 1801639851 | Behavior Technician | Plainfield, IL | 2024 |
| Sophia Mastandrea | 1669106274 | Social Worker | Huntington, NY | 2022 |
| Stephanie Mastandrea | 1124539804 | Behavior Technician | Sweetwater, FL | 2017 |
| Traci Mastandrea, PH.D. | 1831234277 | Clinical Child & Adolescent Psychologist | Redondo Beach, CA | 2007 |
| Tracy Mastandrea, RD,LD/N | 1710113410 | Registered Dietitian | Wellington, FL | 2009 |
| Vanessa Mastandrea, LMFT | 1306535273 | Marriage & Family Therapist | Victorville, CA | 2023 |
| Samantha Mastanduno, D.O. | 1770937419 | Physical Medicine & Rehabilitation Physician | New York, NY | 2016 |
| Sarah Ann Mastanduno, LPN | 1346134475 | Licensed Practical Nurse | Brentwood, NY | 2025 |
| Andrew Mastanduono, M.D. | 1861837106 | Emergency Medicine Physician | New Hyde Park, NY | 2013 |
| Eric Mastanduono | 1770393894 | Oral and Maxillofacial Radiology Dentistry | Lynbrook, NY | 2025 |
| Kathleen Mastantuono, LCSW | 1982958393 | Clinical Social Worker | Pittsburgh, PA | 2012 |
| Teresa Mastantuono | 1912730201 | Speech-Language Pathologist | Frederick, MD | 2024 |
| Brooke Mastarone, WHNP-BC, CRNP | 1497470504 | Women's Health Nurse Practitioner | Aliquippa, PA | 2022 |
| Jennifer Mastas | 1457717233 | Behavior Analyst | Dracut, MA | 2016 |
| Jill Mastascusa, PHARMD | 1982722799 | Pharmacist | Cedar Rapids, IA | 2007 |
| Maribeth Mastascusa, CRNP | 1407060973 | Nurse Practitioner | Pittsburgh, PA | 2007 |
| Nic Mastascusa, PHARMD | 1609202076 | Nuclear Pharmacist | Iowa City, IA | 2013 |
| Joan Mastascuso | 1235856667 | Behavior Technician | Metairie, LA | 2022 |
| Amy Mastaski, MSN RN | 1598201774 | Community Health Worker | Geneva, OH | 2017 |
| Amber Mastaso | 1508611757 | Behavior Technician | Fort Myers, FL | 2024 |
| Gerald Mastaw, MD | 1316993454 | Pain Medicine (Anesthesiology) Physician | Land O Lakes, FL | 2006 |
| Jodie Mastaw | 1245074715 | Case Manager/Care Coordinator | Stanton, MI | 2024 |
| Payton Mastaw | 1184462772 | Doula | Kincheloe, MI | 2024 |
| Christie Mastaw-Benoit, LMSW | 1356362107 | Social Worker | Saline, MI | 2006 |
| Andrew Mastay, DPM | 1093120297 | Foot & Ankle Surgery Podiatrist | Detroit, MI | 2014 |
| Jamie Mastay, NP | 1316540842 | Family Nurse Practitioner | Rochester, NY | 2020 |
| Rachel Mastay, CRNA | 1477115566 | Certified Registered Nurse Anesthetist | Detroit, MI | 2019 |
| Leonard Mastbaum, MD | 1619928249 | Endocrinology, Diabetes & Metabolism Physician | Fort Wayne, IN | 2006 |
| Leslie Mastbaum | 1063992964 | Addiction (Substance Use Disorder) Counselor | Lancaster, SC | 2018 |
| Marni Mastbaum, MS ED | 1376829218 | Mental Health Counselor | Fort Wayne, IN | 2011 |
| Rose Mastberg, LMP | 1215122197 | Massage Therapist | Redmond, WA | 2007 |
| Benjamin Mastbergen | 1487171872 | Physical Therapist | Wyoming, MI | 2017 |
| Curtis Mastbergen | 1073496782 | Mental Health Counselor | South Sioux City, NE | 2025 |
| Hannah Mastbergen, M.D. | 1427316207 | Hospitalist Physician | Lexington, KY | 2012 |
| Jessica Mastbergen, NP | 1023501699 | Adult Health Nurse Practitioner | Traverse City, MI | 2018 |
| Karen Mastbergen | 1518323807 | Registered Nurse | Hudsonville, MI | 2016 |
| Taylore Mastbeth | 1437908928 | Behavior Analyst | East Rutherford, NJ | 2024 |
| Paula Mastboom-Bell, P.T. | 1891840468 | Physical Therapist | Severna Park, MD | 2007 |
| Cynthia Mastbrook, D.O. | 1881746311 | Anesthesiology Physician | Palos Heights, IL | 2007 |
| Paula Mastbrook, CMT | 1053638478 | Specialist | Reston, VA | 2010 |
| Ginger Masted, LPCC | 1750898995 | Professional Counselor | Fort Collins, CO | 2018 |
| Steve Masted, ,BS | 1831062769 | Addiction (Substance Use Disorder) Counselor | Fort Collins, CO | 2025 |
| Laura Mastee, DNP | 1043798457 | Nurse Practitioner | Alma, MI | 2018 |
| Marci Mastej, R.PH. | 1306168117 | Pharmacist | Toms River, NJ | 2010 |
| Amanda Mastel, FNP-BC | 1679933345 | Nurse Practitioner | Fargo, ND | 2016 |
| Brigette Mastel, CNM | 1104134790 | Advanced Practice Midwife | Fort Defiance, AZ | 2010 |
| Claire Mastel, PA-C | 1871178202 | Physician Assistant | Billings, MT | 2021 |
| Glenn Mastel, MD | 1104843747 | Family Medicine Physician | Fargo, ND | 2006 |
| Kate Mastel, CNP | 1427676550 | Family Nurse Practitioner | Robbinsdale, MN | 2020 |
| Katlyn Mastel, PHARMD | 1083204119 | Pharmacist | Green Bay, WI | 2021 |
| Kelsey Mastel, DMD | 1235583899 | Public Health Dentistry | Billings, MT | 2016 |
| Lisa Mastel, LPC | 1013934652 | Professional Counselor | Fargo, ND | 2006 |
| Rebekah Mastel, PSYD | 1548756166 | Psychologist | Milwaukee, WI | 2018 |
| Samuel Mastel, DO | 1811629942 | Sleep Medicine (Family Medicine) Physician | Salt Lake City, UT | 2022 |
| Victoria Mastel, MSW | 1295122893 | Clinical Social Worker | Seattle, WA | 2015 |
| Katherine Mastela, LSW | 1699284984 | Social Worker | Countryside, IL | 2017 |
| Taylor Mastell | 1831909829 | Doula | Canyon Lake, CA | 2025 |
| Daniel Mastella, MD | 1275643322 | Orthopaedic Surgery Physician | Glastonbury, CT | 2006 |
| Kristen Mastella, M.ED., PCC, PPS | 1700744554 | School Counselor | Placerville, CA | 2026 |
| Laura Mastella, CRNP | 1093714438 | Adult Health Nurse Practitioner | Baltimore, MD | 2005 |
| Stephen Mastella, DMD | 1144248139 | General Practice Dentistry | Baltimore, MD | 2006 |
| Cassandra Mastellar | 1144648858 | Developmental Therapist | Syracuse, NY | 2014 |
| Kasey Mastellar, PT, DPT | 1487193280 | Physical Therapist | Laporte, PA | 2017 |
| Brittany Masteller, RDN | 1508665589 | Registered Dietitian | Holt, MI | 2025 |
| Catlin Masteller, RN | 1790537249 | Registered Nurse | Fort Collins, CO | 2024 |
| Chelsea Masteller, LMT | 1669294369 | Massage Therapist | Hughesville, PA | 2024 |
| Diana Masteller, DC | 1780575076 | Chiropractor | Nescopeck, PA | 2025 |
| Franklin Masteller | 1396259123 | Community Health Worker | Shoreline, WA | 2017 |
| James Masteller | 1023886066 | Marriage & Family Therapist | Santa Ana, CA | 2023 |
| Jami Masteller, BSN, RN | 1477733244 | Registered Nurse | Bloomsburg, PA | 2007 |
| Jane Masteller, MA, CCC-SLP | 1295113082 | Speech-Language Pathologist | McHenry, IL | 2015 |
| Leesa Masteller, PT | 1194072819 | Physical Therapist | Wilkes Barre, PA | 2012 |
| Lori Masteller, DO | 1841283538 | Family Medicine Physician | Bloomsburg, PA | 2005 |
| Malcolm Masteller, M.D. | 1255368148 | Family Medicine Physician | Bremerton, WA | 2006 |
| Mark Masteller, DO | 1861470163 | Family Medicine Physician | Erie, PA | 2006 |
| Michael Masteller, M.D. | 1497196455 | Surgery Physician | Chicago, IL | 2013 |
| Robert Masteller, D.C. | 1275630535 | Orthopedic Chiropractor | Longmont, CO | 2006 |
| Sonja Masteller | 1922885524 | Behavior Technician | Norman, OK | 2023 |
| Kelli Mastellon, LMSW | 1851560338 | Clinical Social Worker | Seaford, NY | 2008 |
| Cristina Mastellone, M.S. ED. | 1013234046 | Psychologist | Astoria, NY | 2010 |
| Cristina Mastellone | 1801472865 | Physical Therapy Assistant | Bel Air, MD | 2021 |
| Elizabeth Mastellone, PT,DPT | 1841964897 | Physical Therapist | Manhasset, NY | 2021 |
| Frank Mastellone, D.C | 1639208358 | Chiropractor | Oakhurst, NJ | 2007 |
| James Mastellone, DC | 1407957608 | Sports Physician Chiropractor | Stuart, FL | 2006 |
| Max Mastellone, PH.D. | 1134278179 | Clinical Psychologist | Las Cruces, NM | 2007 |
| Susan Mastellone, DO | 1255379822 | Emergency Medicine Physician | Baltimore, MD | 2006 |
| Rosemarie Mastellone- Strand | 1205675618 | Doula | Ashland, OR | 2024 |
| Mark Mastellotto, DDS | 1013077601 | Dentist | Adrian, MI | 2006 |
| Emily Mastelou-Page, NNP | 1538717848 | Nurse Practitioner | Fort Wayne, IN | 2019 |
| A.. Masten, M.D. | 1083704472 | Dermatology Physician | Milford, DE | 2006 |
| Alexa Masten, AUD | 1124867601 | Audiologist | Richardson, TX | 2024 |
| Alisha Masten | 1326642018 | Community Health Worker | Athens, OH | 2020 |
| Amanda Masten | 1477995785 | Physical Therapy Assistant | Parkersburg, WV | 2013 |
| Ashley Masten, LCSW-C | 1821468182 | Clinical Social Worker | Baltimore, MD | 2015 |
| Ava Masten | 1871385021 | Home Health Aide | Lincoln, NE | 2025 |
| Barbara Masten, PHD | 1053500272 | Clinical Laboratory Director (Non-physician) | Albuquerque, NM | 2007 |
| Betty Masten, M.D. | 1619915600 | Pediatrics Physician | Durham, NC | 2006 |
| Brady Masten | 1881589497 | Student in an Organized Health Care Education/Training Program | Perrysburg, OH | 2025 |
| Brandi Masten, CADC | 1053678714 | Addiction (Substance Use Disorder) Counselor | Lewiston, ME | 2012 |
| Brooke Masten, PHARMD | 1831636604 | Pharmacist | Winston Salem, NC | 2017 |
| Craig Masten | 1386711786 | Genetic Counselor (M.S.) | Framingham, MA | 2006 |
| Cristina Masten | 1821651803 | Surgery Physician | Alexandria, MN | 2019 |
| Debora Masten | 1275028805 | Massage Therapist | Salem, OR | 2018 |
| Deborah Masten | 1689022428 | Mental Health Counselor | Bellevue, WA | 2016 |
| Debra Masten | 1336384445 | Physical Therapist | N Bellmore, NY | 2008 |
| Deena Masten, APRN | 1164906061 | Family Nurse Practitioner | Lebanon, NH | 2018 |
| Desiree Masten, MD | 1962881383 | Anesthesiology Physician | Houston, TX | 2015 |
| Elizabeth Masten, M.D. | 1225128614 | Dermatology Physician | Milford, DE | 2006 |
| Emily Masten | 1225659105 | Counselor | Lake City, FL | 2020 |
| Gillian Masten, MA CCC-SLP | 1033565353 | Speech-Language Pathologist | Washington, DC | 2016 |
| Heather Masten | 1972214088 | Community Health Worker | Acoma, NM | 2022 |
| Hollie Masten, LMT | 1952684136 | Massage Therapist | Milford, DE | 2011 |
| James Masten, M.D. | 1528022696 | Diagnostic Radiology Physician | Cleveland, OH | 2006 |
| James Masten, L.C.S.W., PH.D. | 1811074453 | Clinical Social Worker | New York, NY | 2006 |
| Jamie Masten, OTR | 1659335834 | Occupational Therapist | Moon Township, PA | 2006 |
| Jeffrey Masten, PHARMD | 1770036329 | Pharmacist | Charlottesville, VA | 2016 |
| Jeremy Masten, DMD | 1538051685 | Dentist | El Paso, TX | 2025 |
| Kaitlin Masten | 1003619628 | Behavior Technician | Killeen, TX | 2025 |
| Kelly Jo Masten, APRN-RNP | 1871292789 | Family Nurse Practitioner | Safford, AZ | 2023 |
| Kimberly Masten, RRT, RCP | 1265675136 | Registered Respiratory Therapist | Williamston, NC | 2009 |
| Kirk Masten, DO | 1972593416 | Anesthesiology Physician | Fort Wayne, IN | 2005 |
| Marissa Masten, MTRS, TRS, MS | 1205661246 | Recreation Therapist | Murray, UT | 2024 |
| Marjorie Masten, NP-C | 1356864094 | Family Nurse Practitioner | West Fargo, ND | 2017 |
| Marjorie Masten | 1972933414 | Registered Nurse | Philadelphia, PA | 2013 |
| Marnie Masten, LPCC | 1457753279 | Mental Health Counselor | Dayton, OH | 2014 |
| McCarty Masten | 1184550345 | Behavior Technician | Murray, KY | 2026 |
| Megan Masten, MD | 1730642463 | Obstetrics & Gynecology Physician | Portland, ME | 2019 |
| Mellissa Masten, QMHS CMS | 1750945267 | Case Manager/Care Coordinator | Lancaster, OH | 2019 |
| Natalie Masten, DPT | 1780209932 | Physical Therapist | Royse City, TX | 2020 |
| Nicholas Masten, PHARMD | 1154020410 | Pharmacist | Phoenix, AZ | 2023 |
| Olivia Masten, B.S. | 1386577880 | Clinical Exercise Physiologist | Pittsburgh, PA | 2026 |
| Priscilla Masten | 1144799149 | Behavior Technician | Citrus Heights, CA | 2018 |
| Sara Masten, PA-C | 1689389652 | Physician Assistant | Omaha, NE | 2023 |
| Sarah Masten | 1225730443 | Student in an Organized Health Care Education/Training Program | St Petersburg, FL | 2023 |
| Sarah Masten, DNP, FPMHNP-BC | 1336664481 | Psychiatric/Mental Health Nurse Practitioner | Lakewood, CO | 2017 |
| Shanley Masten | 1134843329 | Counselor | McKinleyville, CA | 2022 |
| Shaylynne Masten, MSW | 1477025682 | Social Worker | McKinleyville, CA | 2018 |
| Stacy Masten, M.S.W., L.C.S.W. | 1104829589 | Clinical Social Worker | Prescott, AZ | 2005 |
| Starr Masten, LPN | 1790936920 | Licensed Practical Nurse | Belmont, NY | 2008 |
| Stefani Masten, OT | 1881785962 | Occupational Therapist | Tyler, TX | 2006 |
| Sue Masten, M.D. | 1225377369 | Internal Medicine Physician | Seattle, WA | 2013 |
| Taylor Masten, ATC | 1871870766 | Athletic Trainer | Fresno, CA | 2011 |
| Terrie Masten, MA CCC-SLP | 1801271796 | Speech-Language Pathologist | Rancho Cucamonga, CA | 2015 |
| Thomas Masten, MD | 1194745299 | Sports Medicine (Family Medicine) Physician | East Syracuse, NY | 2006 |
| Titisha Masten | 1336775337 | Military Health Care Provider | Tripler Army Medical Center, HI | 2020 |
| Tyler Masten | 1295685634 | Clinical Social Worker | Indianapolis, IN | 2026 |
| Wanda Masten, WHCNP | 1730134115 | Women's Health Nurse Practitioner | Lubbock, TX | 2006 |
| Whitney Masten, CCC-SLP | 1912574849 | Speech-Language Pathologist | Fresno, CA | 2021 |
| Annalise Masten-Muniz, LMHC, CASAC | 1174164107 | Mental Health Counselor | Rochester, NY | 2019 |
| Aaron Mastenbrook | 1316395213 | Professional Counselor | Kalamazoo, MI | 2016 |
| Anna Mastenbrook | 1407573157 | Behavior Technician | Kalamazoo, MI | 2022 |
| Gwen Mastenbrook | 1427898493 | Community Health Worker | Howell, MI | 2024 |
| Joshua Mastenbrook, MD | 1356661342 | Emergency Medicine Physician | Kalamazoo, MI | 2010 |
| Madelyn Mastenbrook | 1013869858 | Case Manager/Care Coordinator | Southfield, MI | 2026 |
| Matthew Mastenbrook, DPT | 1871011213 | Physical Therapist | Chicago, IL | 2017 |
| Richard Mastenbrook, CNP | 1619386083 | Nurse Practitioner | Chisago City, MN | 2014 |
| Susan Mastenbrook, NP | 1205194248 | Family Nurse Practitioner | Kalamazoo, MI | 2012 |
| Aashini Master, D.O | 1154557387 | Hematology & Oncology Physician | Beverly Hills, CA | 2009 |
| Abby Master | 1841586716 | Speech-Language Pathologist | Excelsior, MN | 2011 |
| Adam Master, MD | 1588956064 | Otology & Neurotology Physician | New Orleans, LA | 2011 |
| Aditi Master, MD | 1295423689 | Student in an Organized Health Care Education/Training Program | Newark, NJ | 2023 |
| Andrea Master, COTA | 1043619976 | Occupational Therapy Assistant | Boulder, CO | 2014 |
| Ankoor Master | 1144485483 | Mental Health Counselor | Oakland, CA | 2008 |
| Ashley Master, TLLP | 1033954250 | Psychologist | Traverse City, MI | 2024 |
| Bernard Master, DO | 1578700829 | Family Medicine Physician | Worthington, OH | 2009 |
| Bernisha Master | 1306770458 | Behavior Analyst | East Hartford, CT | 2026 |
| Bilal Master, DPM | 1588156756 | Foot & Ankle Surgery Podiatrist | Plano, TX | 2018 |
| Charles Master, M.D. | 1528052123 | Diagnostic Radiology Physician | Flushing, NY | 2005 |
| Christina Master, MD | 1679519862 | Pediatric Sports Medicine Physician | Philadelphia, PA | 2006 |
| Christine Master, N.P. | 1144424904 | Adult Health Nurse Practitioner | Orange, CA | 2007 |
| Constantina Master, MD | 1194803999 | Critical Care Medicine (Internal Medicine) Physician | Oakland, CA | 2006 |
| Daniel Master, M.D. | 1770798795 | Orthopaedic Hand Surgery Physician | Boulder, CO | 2007 |
| Deanna Master, MD | 1437168234 | Family Medicine Physician | Novi, MI | 2006 |
| Demitrios Master, MD | 1790624831 | Student in an Organized Health Care Education/Training Program | Seattle, WA | 2026 |
| Dev Master, MD | 1093108607 | Pediatrics Physician | Elmhurst, NY | 2015 |
| Dipak Master, O.D. | 1568568095 | Corneal and Contact Management Optometrist | Irving, TX | 2006 |
| Elias Master, DDS | 1164515573 | General Practice Dentistry | Brentwood, NY | 2006 |
| Erica Master, PHARMD | 1255732715 | Pharmacist | Charleston, WV | 2014 |
| Eugene Master, DO, MS | 1457812075 | Pediatric Emergency Medicine (Pediatrics) Physician | Aurora, CO | 2019 |
| Faizan Master, MD | 1376275719 | Family Medicine Physician | Tampa, FL | 2022 |
| George Master, DMD | 1871679019 | Oral and Maxillofacial Surgery (Dentist) | Scottsdale, AZ | 2006 |
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).