Providers Jeffrey Sieracki, PHD to Edith Sierra
300 individual NPIs in the federal registry, part 20,178 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. 83 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Jeffrey Sieracki, PHD | 1962718643 | Clinical Psychologist | Chicago, IL | 2010 |
| Katherine Sieracki | 1336860048 | Social Worker | Los Angeles, CA | 2022 |
| Keith Sieracki, PA-C | 1760436232 | Medical Physician Assistant | Sarasota, FL | 2006 |
| Kelly Sieracki, LCSW | 1508292749 | Clinical Social Worker | New Bedford, MA | 2013 |
| Kristina Sieracki, PHARM.D. | 1861716409 | Pharmacist | Jersey City, NJ | 2010 |
| Lauren Sieracki, PHARMD | 1093600785 | Ambulatory Care Pharmacist | Springfield, MA | 2025 |
| Lynette Sieracki, DO | 1548283427 | Infectious Disease Physician | Lauderdale Lakes, FL | 2006 |
| Marianna Sieracki, PA-C | 1659786374 | Physician Assistant | Fond Du Lac, WI | 2014 |
| Mary Sieracki, LPC | 1861723645 | Mental Health Counselor | Floresville, TX | 2010 |
| Matthew Sieracki | 1356057434 | Homemaker | Chardon, OH | 2023 |
| Michael Sieracki, PA-C | 1114915790 | Physician Assistant | Rocky Mount, NC | 2005 |
| Nichole Sieracki, PHD | 1356730683 | Clinical Psychologist | San Antonio, TX | 2015 |
| Roland Sieracki, L.AC, DIPL.O.M.,CKTP | 1356679062 | Acupuncturist | Eugene, OR | 2009 |
| Ryne Sieracki, MD | 1164357786 | Student in an Organized Health Care Education/Training Program | Chicago, IL | 2026 |
| Karoline Sieracki Rede, MD | 1437701687 | Student in an Organized Health Care Education/Training Program | Framingham, MA | 2019 |
| Jacque Sierad, L.C.S.W. | 1891916979 | Clinical Social Worker | Woodland Hills, CA | 2007 |
| Matthew Sieradski, M.AC.O.M., L.AC. | 1881756047 | Acupuncturist | Eugene, OR | 2006 |
| Izabela Sieradzan, LMT | 1588482897 | Massage Therapist | Kailua, HI | 2024 |
| Madison Sieradzan, PA-C | 1255014551 | Physician Assistant | Charlotte, NC | 2023 |
| James Sieradzki, M.D. | 1578723185 | Orthopaedic Surgery Physician | South Bend, IN | 2008 |
| Stephanie Sieradzki | 1013309228 | Social Worker | Grand Rapids, MI | 2015 |
| Stephen Sieradzki, D.C. | 1528164340 | Chiropractor | Snellville, GA | 2006 |
| Paulina Sieradzy | 1124942867 | Psychiatric/Mental Health Nurse Practitioner | Colonia, NJ | 2026 |
| Annette Sierak | 1235796905 | Occupational Therapist | Liverpool, NY | 2019 |
| Janice Sierak, LCSW | 1366480204 | Clinical Social Worker | Utica, NY | 2006 |
| Maria Sierakowska | 1467767673 | Physical Therapist | Orland Park, IL | 2010 |
| Elizabeth Sierakowski, M.D. | 1326301490 | Family Medicine Physician | Raleigh, NC | 2012 |
| Emily Sierakowski, MD | 1104454008 | Pediatric Hospice and Palliative Medicine Physician | Salt Lake City, UT | 2020 |
| James Sierakowski, DO | 1346539004 | Pediatric Emergency Medicine (Pediatrics) Physician | Greenville, SC | 2011 |
| Rita Sierakowski, MA LLP | 1659562817 | Psychologist | Bay City, MI | 2007 |
| Sheryl Sierakowski, LPC | 1265851679 | Professional Counselor | Fox River Grove, IL | 2014 |
| Steven Sierakowski, DMD | 1508889387 | Periodontics | Glen Mills, PA | 2006 |
| Adrian Sierant, PHARMD | 1356525950 | Pharmacist | Oceanside, NY | 2007 |
| David Sierant, DPT | 1174292908 | Physical Therapist | Niles, IL | 2021 |
| Jennifer Sierant | 1962041228 | Lactation Consultant (Non-RN) | Newfane, NY | 2020 |
| John Sierant, MD | 1538109293 | Ophthalmology Physician | Dearborn, MI | 2006 |
| Kari Sierant, APN | 1184149940 | Adult Health Nurse Practitioner | Morristown, NJ | 2017 |
| Michelle Sierant, PA-C | 1609489632 | Physician Assistant | Farmington Hills, MI | 2020 |
| Margaret Sierantowicz, MD | 1275638215 | Pediatrics Physician | South Barrington, IL | 2006 |
| Carolyn Sieraski, R.PH. | 1437363371 | Pharmacist | Excelsior, MN | 2007 |
| Madelyn Sieraski, M.D. | 1902879737 | Family Medicine Physician | Waukesha, WI | 2006 |
| Steven Sieraski, D.D.S. | 1568664886 | Endodontics | Bloomington, IL | 2007 |
| Pawel Sierbinski, PHARMD | 1346627569 | Pharmacist | Saint Louis, MO | 2015 |
| Rachel Sierbinski, PHARM.D. | 1194153999 | Pharmacist | Saint Louis, MO | 2013 |
| Brandon Sierchio, MA, BCBA | 1831720275 | Behavior Analyst | Sewell, NJ | 2020 |
| Jacqueline Sierchio | 1568858447 | Physical Therapy Assistant | Fairfield, NJ | 2015 |
| Jeanine Sierchio, OTR/L | 1538357975 | Occupational Therapist | Mountainside, NJ | 2007 |
| Alexander Sierck, JD, LP | 1952133316 | Psychoanalysis Psychologist | Brooklyn, NY | 2024 |
| Stew Sierck, PTA | 1114512647 | Physical Therapy Assistant | Dallas Center, IA | 2021 |
| Duane Siercke, PHARM.D. | 1497961676 | Pharmacotherapy Pharmacist | Coeur D Alene, ID | 2007 |
| Henry Siercke | 1922562826 | Marriage & Family Therapist | Cerritos, CA | 2019 |
| Crystal Siercks, RN | 1871202093 | Registered Nurse | Auburn, WA | 2022 |
| Derek Siercks, PHARMD | 1932551629 | Pharmacist | Rochester, MN | 2016 |
| Laura Siercks, LICSW | 1134217748 | Clinical Social Worker | Minot, ND | 2006 |
| Allie Sierdsma | 1104740984 | Assistant Behavior Analyst | Modesto, CA | 2026 |
| Ava Sierecki, MD | 1477796506 | Obstetrics & Gynecology Physician | Huntington, NY | 2009 |
| Carma Sierecki | 1760146674 | Pharmacist | Columbus, OH | 2021 |
| Mitchell Sierecki, MD | 1922339498 | Internal Medicine Physician | Huntington, NY | 2010 |
| Jennifer Sieredzki | 1417788555 | Student in an Organized Health Care Education/Training Program | New York, NY | 2024 |
| Carrie Sieren, CNP | 1407619828 | Family Nurse Practitioner | Springfield, IL | 2024 |
| Christina Sieren, B.A., M.S.W., LCSW | 1609992700 | Clinical Social Worker | Valencia, CA | 2007 |
| Jill Sieren, BSN RN | 1952035594 | Home Health Registered Nurse | Wind Lake, WI | 2022 |
| Joan Sieren, ARNP | 1972119071 | Nurse Practitioner | Iowa City, IA | 2020 |
| Kimberly Sieren | 1053507277 | Occupational Therapist | Kirksville, MO | 2007 |
| Lea Sieren, LISW | 1538264445 | Counselor | Ottumwa, IA | 2006 |
| Leah Sieren, MD | 1740441088 | Pediatric Surgery Physician | Winston Salem, NC | 2008 |
| Raeanne Sieren, LPN | 1710664099 | Licensed Practical Nurse | Knoxville, IA | 2023 |
| Rosemary Sieren | 1003080987 | Physical Therapy Assistant | West Des Moines, IA | 2008 |
| Shawna Sieren | 1922457258 | Athletic Trainer | Keota, IA | 2016 |
| Alexandria Sierens, ATC, LAT | 1629723531 | Athletic Trainer | Rock Island, IL | 2022 |
| Diane Sierens, M.D. | 1831127802 | Neurological Surgery Physician | Rockford, IL | 2006 |
| Harmony Sierens, M.D. | 1326201252 | Pediatric Rehabilitation Medicine Physician | Grand Blanc, MI | 2008 |
| Sherri Sierens, LMFT | 1861104069 | Marriage & Family Therapist | Tucson, AZ | 2022 |
| Supreeya Sierens | 1992574529 | Behavior Technician | El Segundo, CA | 2023 |
| Amy Sierer | 1992310031 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Helena, MT | 2020 |
| Erin Sierer, DPT | 1407048879 | Physical Therapist | Jacksonville, NC | 2007 |
| Jaren Sierer, BSN, RN | 1609722172 | Critical Care Medicine Registered Nurse | Salt Lake City, UT | 2026 |
| Jenna Sierer | 1033683693 | Clinical Social Worker | Portsmouth, OH | 2019 |
| Kurt Sierer | 1063939122 | Physical Therapist | Wilton, CT | 2017 |
| Arlene Siereveld, NP-C | 1104915685 | Adult Health Nurse Practitioner | Claremore, OK | 2006 |
| Danielle Siereveld | 1578371035 | Counselor | Dayton, OH | 2024 |
| Kalie Siereveld | 1477245611 | Athletic Trainer | Hamilton, OH | 2023 |
| Kelsey Siereveld | 1982598538 | Case Manager/Care Coordinator | Cincinnati, OH | 2025 |
| Tasia Siereveld | 1235646464 | Behavior Technician | Bellevue, WA | 2018 |
| Cynthia Siergey, CNP | 1104915255 | Adult Health Nurse Practitioner | Chicago, IL | 2006 |
| Justine Siergey, OD | 1588925622 | Corneal and Contact Management Optometrist | Orlando, FL | 2012 |
| Alan Siergiej | 1548922578 | Physical Therapist | Brooklyn, NY | 2021 |
| Andrew Siergiej | 1124541990 | Physical Therapist | Brockport, NY | 2017 |
| Megan Siergiej, PT, DPT | 1083266944 | Physical Therapist | Brownsburg, IN | 2019 |
| Michael Siergiej, CRNA | 1962123331 | Certified Registered Nurse Anesthetist | Saint Cloud, MN | 2022 |
| Monika Siergiej, RN | 1629931845 | Registered Nurse | Brooklyn, NY | 2025 |
| Leigh Siergiewicz, ND | 1568975803 | Naturopath | Vashon, WA | 2017 |
| Andrea Siering, R.D. | 1376048801 | Pediatric Nutrition Registered Dietitian | New Brunswick, NJ | 2018 |
| Sarah Siering, LPAT, BCBA, LAPC | 1891978243 | Art Therapist | Pennington, NJ | 2007 |
| Alexander Sierk, DDS,MS | 1912111717 | Orthodontics and Dentofacial Orthopedics Dentistry | Bettendorf, IA | 2007 |
| Anne Sierk, MD | 1891755641 | Anatomic Pathology & Clinical Pathology Physician | Lakewood, OH | 2006 |
| Christopher Sierk, D.D.S. | 1104001106 | Orthodontics and Dentofacial Orthopedics Dentistry | Tigard, OR | 2008 |
| Donald Sierk, DDS, MS, PC | 1376674952 | Orthodontics and Dentofacial Orthopedics Dentistry | Bettendorf, IA | 2007 |
| Jonathan Sierk, DDS | 1093882870 | Pediatric Dentistry | Highlands Ranch, CO | 2006 |
| Michelle Sierk, PT | 1710125463 | Physical Therapist | Greensburg, PA | 2009 |
| Priscilla Sierk, D.O. | 1255352324 | Psychiatry Physician | Austin, TX | 2006 |
| Hannah Sierka | 1992540231 | Medical Physician Assistant | Pennington, NJ | 2024 |
| Alexandra Sierko, PHARMD | 1073198917 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Auburn, AL | 2021 |
| Cadi Sierko | 1871117317 | Clinical Social Worker | Bay City, MI | 2020 |
| Danielle Sierks, FNP | 1508759606 | Family Nurse Practitioner | Leavenworth, KS | 2025 |
| Gwendolyn Sierks | 1932905486 | Behavior Technician | Kokomo, IN | 2025 |
| Noah Sierks | 1215771100 | Student in an Organized Health Care Education/Training Program | Tucson, AZ | 2024 |
| Sarah Sierks, AGACNP-BC | 1558882373 | Critical Care Medicine (Anesthesiology) Physician | Kansas City, KS | 2017 |
| Sheena Sierks | 1598508269 | Behavior Technician | Omaha, NE | 2024 |
| Frederick Sierles | 1982828737 | Psychiatry Physician | North Chicago, IL | 2007 |
| Gabrielle Sierman, APRN, FNP | 1861041311 | Family Nurse Practitioner | Cape Girardeau, MO | 2019 |
| Angela Siermine | 1063879914 | Mental Health Counselor | Westampton, NJ | 2016 |
| Genevieve Sierminski, M.D. | 1376742858 | Nephrology Physician | Flint, MI | 2007 |
| Gregory Sierminski, DDS | 1255386801 | Dentist | Wonder Lake, IL | 2006 |
| Maria Siero, ARNP-BC | 1629529680 | Family Nurse Practitioner | Miami, FL | 2016 |
| Joan Sierocinski, RNFA | 1245445501 | Registered Nurse First Assistant | Santa Fe, NM | 2007 |
| Joni Sierocinski, PHARM.D., CDE | 1205918950 | Pharmacotherapy Pharmacist | Kingsport, TN | 2006 |
| Madison Sierocinski, RBT | 1003579350 | Behavior Technician | Englewood, CO | 2021 |
| Agnes Sierocka-Castaneda, M.D. | 1376564237 | Neonatal-Perinatal Medicine Physician | Bethesda, MD | 2006 |
| John Sierocki, M.D. | 1487792354 | Medical Oncology Physician | Princeton, NJ | 2007 |
| Katheryn Sierocki, MPA | 1629582945 | Health Information Specialist/Technologist | Loveland, CO | 2017 |
| Kyle Sierocuk, APRN | 1235757816 | Psychiatric/Mental Health Nurse Practitioner | Springdale, AR | 2020 |
| Taylor Sierocuk, AGACNP | 1164100376 | Acute Care Nurse Practitioner | Rogers, AR | 2023 |
| Arthur Sieron, M.D. | 1477230555 | Emergency Medicine Physician | Saginaw, MI | 2023 |
| Craig Sieron, OD | 1669592440 | Optometrist | Belleville, IL | 2007 |
| Leslie Sieron, ACNP | 1619139334 | Acute Care Nurse Practitioner | Naples, FL | 2008 |
| Tyler Sieron, DO | 1891280384 | Emergency Medicine Physician | Cleveland, OH | 2018 |
| Jacqueline Sieros, MD, MPH | 1699012526 | Obstetrics & Gynecology Physician | Bannockburn, IL | 2013 |
| Tiffany Sieroslawski, OTR/L | 1801313655 | Occupational Therapist | Arlington Heights, IL | 2017 |
| Joseph Sierota | 1184188229 | Pharmacist | Corry, PA | 2019 |
| Karolina Sierotnik, AGACNP-BC, DNP | 1194504316 | Acute Care Nurse Practitioner | Rockford, IL | 2023 |
| Katherine Sierotnik | 1811257041 | Case Manager/Care Coordinator | East Syracuse, NY | 2012 |
| Christopher Sierotowicz, DPT | 1659740611 | Physical Therapist | Mechanicsburg, PA | 2015 |
| Samantha Sierotowicz, PT, DPT | 1710525068 | Physical Therapist | Hershey, PA | 2019 |
| Suzanne Sierp, L.C.S.W, C.A.S.A.C | 1427273978 | Clinical Social Worker | Staten Island, NY | 2007 |
| David Sierpina, MD | 1043502347 | Ophthalmology Physician | Loma Linda, CA | 2011 |
| Victor Sierpina, MD | 1063580298 | Family Medicine Physician | Galveston, TX | 2006 |
| Samantha Sierpinski | 1740943117 | Occupational Therapy Assistant | New City, NY | 2021 |
| Jack Sierputowski | 1346073285 | Behavior Technician | Rocky River, OH | 2024 |
| Abigail Sierra | 1326998378 | Behavior Technician | Richmond, VA | 2026 |
| Adam Sierra, MD | 1780172825 | Diagnostic Radiology Physician | El Paso, TX | 2018 |
| Adrian Sierra | 1023944717 | Optician | Colorado Springs, CO | 2026 |
| Adriana Sierra | 1518747047 | Driver | North Las Vegas, NV | 2023 |
| Adrienne Sierra, MSW | 1346524832 | Social Worker | San Diego, CA | 2011 |
| Adrienne Sierra, CEO | 1699154328 | Other Specialist/Technologist | Spring, TX | 2015 |
| Ady Sierra | 1518663459 | School Psychologist | Chicago, IL | 2023 |
| Albert Sierra | 1669055703 | Clinical Social Worker | Raleigh, NC | 2021 |
| Alberto Sierra, LMT | 1972891067 | Massage Therapist | Miami, FL | 2011 |
| Alejandra Sierra, RPH, PHARMD | 1144174483 | Pharmacist | El Paso, TX | 2026 |
| Alejandro Sierra | 1215538012 | Attendant Care Provider | Baton Rouge, LA | 2020 |
| Alex Sierra | 1013870328 | Personal Care Attendant | Youngstown, OH | 2025 |
| Alexander Sierra | 1891254652 | Physical Therapy Assistant | Bethlehem, PA | 2019 |
| Alexandra Sierra | 1447128301 | Home Health Registered Nurse | Omaha, NE | 2025 |
| Alexandra Sierra, LMT | 1962146654 | Massage Therapist | Kings Park, NY | 2022 |
| Alexandra Sierra, MA | 1992325278 | Mental Health Counselor | Roseville, CA | 2020 |
| Alexis Sierra | 1811766900 | Behavior Technician | El Segundo, CA | 2023 |
| Alfonso Sierra, MD | 1700978293 | Pediatrics Physician | Dracut, MA | 2006 |
| Alice Sierra, RN | 1649438276 | Registered Nurse | Pine Ridge, SD | 2008 |
| Allison Sierra | 1326851353 | Mental Health Counselor | Germantown, MD | 2025 |
| Allyson Sierra | 1831661693 | Behavior Technician | Richmond Hill, GA | 2018 |
| Alondra Sierra, DO | 1144922949 | Student in an Organized Health Care Education/Training Program | El Paso, TX | 2023 |
| Alondra Sierra | 1235717794 | Behavior Technician | Riverside, CA | 2021 |
| Alysia Sierra, PSY.D | 1720458946 | Clinical Psychologist | Arnold, MD | 2015 |
| Amanda Sierra, OTR/L | 1205461217 | Occupational Therapist | Clermont, GA | 2020 |
| Amanda Sierra, DNP | 1245162593 | Family Nurse Practitioner | Magnolia, TX | 2026 |
| Amanda Sierra, CRNA | 1891797783 | Certified Registered Nurse Anesthetist | Camp Pendleton, CA | 2005 |
| Amanda Sierra | 1952165300 | Case Manager/Care Coordinator | Austintown, OH | 2024 |
| Amberlyn Sierra, LCSW | 1184180143 | Clinical Social Worker | Norwalk, CA | 2019 |
| Amely Sierra | 1841178464 | Behavior Technician | Miami Gardens, FL | 2025 |
| Amy Sierra | 1831549450 | Behavior Technician | Miami, FL | 2016 |
| Ana Sierra, MA | 1437415346 | Mental Health Counselor | Berwyn, IL | 2012 |
| Ana Sierra | 1518602010 | Clinical Social Worker | Reading, PA | 2022 |
| Ana Sierra, PH.D. | 1982688362 | Clinical Psychologist | Tacoma, WA | 2005 |
| Ana Sierra, ARNP | 1992295976 | Adult Health Nurse Practitioner | Lakeland, FL | 2018 |
| Anabel Sierra | 1801354295 | Occupational Therapist | Miami, FL | 2019 |
| Andrea Sierra, LSW LCDC III | 1689165466 | Social Worker | Dayton, OH | 2018 |
| Andrew Sierra, MD | 1932276870 | Family Medicine Physician | Baldwin Park, CA | 2006 |
| Andro Sierra | 1588194203 | Behavior Technician | Miami Gardens, FL | 2017 |
| Andy Sierra | 1538822820 | Home Health Aide | Hoodsport, WA | 2021 |
| Angel Sierra | 1043103336 | Behavior Technician | Covina, CA | 2025 |
| Angel Sierra, CASAC-T | 1174942676 | Addiction (Substance Use Disorder) Counselor | Brooklyn, NY | 2014 |
| Angel Sierra, OPTICIAN | 1679629679 | Optician | Hartford, CT | 2007 |
| Angel Sierra | 1780064527 | Pulmonary Function Technologist | Bethesda, MD | 2015 |
| Angela Sierra | 1023508009 | Case Manager/Care Coordinator | Los Angeles, CA | 2018 |
| Angela Sierra, MS CF-SLP | 1780348805 | Speech-Language Pathologist | San Antonio, TX | 2021 |
| Angelica Sierra, LICSW | 1518702455 | Clinical Social Worker | Boston, MA | 2024 |
| Angelica Sierra | 1962364521 | Hearing Instrument Specialist | Sterling, VA | 2025 |
| Anjelica Sierra, SLP | 1851644249 | Speech-Language Pathologist | Melrose Park, IL | 2012 |
| Anthony Sierra, CRNA | 1487042651 | Certified Registered Nurse Anesthetist | Little Rock, AR | 2014 |
| Anthony Sierra, M.D. | 1942283163 | Obstetrics & Gynecology Physician | Sioux Falls, SD | 2005 |
| Antonio Sierra, D.P.M. | 1205523602 | Student in an Organized Health Care Education/Training Program | Mount Airy, NC | 2023 |
| Araceli Sierra | 1730913518 | Day Training/Habilitation Specialist | Fresno, CA | 2024 |
| Araceli Sierra, PA-C | 1861483000 | Physician Assistant | San Antonio, TX | 2005 |
| Areliz Sierra, MA | 1679753271 | Mental Health Counselor | Philadelphia, PA | 2007 |
| Aryanna Sierra | 1417536012 | Behavior Technician | Stockton, CA | 2021 |
| Ashley Sierra | 1386187706 | Speech-Language Pathologist | Hialeah, FL | 2016 |
| Avis Sierra, MS, LPC, NCC | 1952530776 | Professional Counselor | Fond Du Lac, WI | 2009 |
| Aylen Sierra | 1184590309 | Personal Care Attendant | Las Vegas, NV | 2025 |
| Beatriz Sierra | 1699436444 | Case Manager/Care Coordinator | Salt Lake City, UT | 2022 |
| Bernadette Sierra, RPT | 1528740768 | Physical Therapist | Bayside, NY | 2023 |
| Betsy Sierra | 1255135489 | Behavior Technician | Hialeah, FL | 2025 |
| Bianca Sierra | 1629620752 | Behavior Technician | Tucson, AZ | 2019 |
| Bisbeth Sierra, ARNP | 1134558695 | Adult Health Nurse Practitioner | Miami, FL | 2013 |
| Brandi Sierra | 1942609961 | Registered Nurse | San Jose, CA | 2014 |
| Brandon Sierra | 1003704891 | Behavior Technician | San Antonio, TX | 2025 |
| Brandon Sierra | 1962057042 | General Practice Dentistry | Visalia, CA | 2019 |
| Brdget Sierra, APNP | 1891458105 | Nurse Practitioner | Brookfield, WI | 2021 |
| Brenda Sierra | 1033790720 | Behavior Technician | Largo, FL | 2021 |
| Brittany Sierra | 1700523669 | Behavior Technician | Sacramento, CA | 2022 |
| Brynn Sierra | 1992188718 | Occupational Therapist | Middletown, NY | 2015 |
| Callie Sierra | 1578376661 | Community Health Worker | Muskegon, MI | 2025 |
| Carlos Sierra | 1053917054 | Dental Hygienist | Inverness, FL | 2020 |
| Carlos Sierra | 1306065875 | Dentist | Lauderdale By The Sea, FL | 2007 |
| Carlos Sierra, D.D.S.,MS. | 1447418223 | General Practice Dentistry | Houston, TX | 2008 |
| Carlos Sierra, LPC | 1457302572 | Professional Counselor | Raleigh, NC | 2006 |
| Carlos Sierra | 1518555341 | Mental Health Counselor | Lauderhill, FL | 2021 |
| Carmen Sierra, RPH | 1306175237 | Pharmacist | Aibonito, PR | 2009 |
| Carmen Sierra, M.D. | 1811949415 | Family Medicine Physician | Saint Cloud, FL | 2006 |
| Carmen Sierra, MD | 1972539054 | Obstetrics Physician | Hato Rey, PR | 2006 |
| Carolina Sierra, M.D. | 1588672786 | Endocrinology, Diabetes & Metabolism Physician | New York, NY | 2006 |
| Carolina Sierra | 1760089676 | Day Training/Habilitation Specialist | Waldorf, MD | 2020 |
| Carolina Sierra, PA-C | 1831576586 | Physician Assistant | Brooklyn, NY | 2015 |
| Carolina Sierra, LN | 1942800180 | Nutritionist | Washington, DC | 2020 |
| Cassandra Sierra | 1396073508 | Addiction (Substance Use Disorder) Counselor | Wellington, FL | 2009 |
| Cassandra Sierra | 1477079655 | Speech-Language Assistant | Tracy, CA | 2017 |
| Catherine Sierra | 1396625125 | Student in an Organized Health Care Education/Training Program | Greenville, NC | 2025 |
| Celestina Sierra | 1871064527 | Electroneurodiagnostic Specialist/Technologist | White Plains, NY | 2018 |
| Cerissa Sierra, M.S. BCBA | 1366746810 | Behavior Analyst | Orlando, FL | 2010 |
| Cesar Sierra, MD | 1902997240 | Ophthalmology Physician | Westport, CT | 2006 |
| Charles Sierra | 1598552622 | Dentist | Hialeah, FL | 2025 |
| Charles Sierra, BACHELORS IN SCIENCE | 1972275006 | Counseling Psychologist | Winter Park, FL | 2021 |
| Charlyne Sierra | 1215765573 | Counseling Psychologist | Cabo Rojo, PR | 2024 |
| Cheryl Sierra | 1407132475 | Pharmacist | Raleigh, NC | 2011 |
| Chloe Sierra, FNP | 1962259564 | Family Nurse Practitioner | Arlington, TX | 2024 |
| Chloie Sierra, LCSW | 1093370207 | Clinical Social Worker | Torrance, CA | 2019 |
| Chloie Sierra | 1598598591 | Behavior Technician | Monrovia, CA | 2024 |
| Christian Sierra | 1831743087 | Behavior Technician | Huntington Beach, CA | 2019 |
| Christina Sierra, CNM | 1144295627 | Advanced Practice Midwife | Ft Myers, FL | 2006 |
| Christina Sierra, APRN | 1780218909 | Family Nurse Practitioner | Hialeah, FL | 2020 |
| Christine Sierra, RDMS | 1992482673 | Sonography Radiologic Technologist | St Johns, FL | 2023 |
| Christopher Sierra, D.D.S. | 1467835843 | Dentist | Pasadena, TX | 2015 |
| Cindy Sierra | 1467246652 | Optician | Phoenix, AZ | 2025 |
| Cinthia Sierra | 1124807672 | Day Training/Habilitation Specialist | El Centro, CA | 2023 |
| Claire Sierra | 1609156389 | Mental Health Counselor | Grants Pass, OR | 2011 |
| Claudia Sierra | 1013547959 | Behavior Technician | Miami, FL | 2020 |
| Claudia Sierra, MD | 1831565266 | Pediatrics Physician | Miami, FL | 2015 |
| Connor Sierra | 1356296966 | Student in an Organized Health Care Education/Training Program | Columbia, MO | 2026 |
| Cristal Sierra | 1164395695 | Behavior Technician | Los Angeles, CA | 2025 |
| Cristi Sierra, DPT | 1538641584 | Physical Therapist | Worcester, MA | 2018 |
| Cristian Sierra, DMD | 1265849426 | Dentist | Atascadero, CA | 2014 |
| Cristina Sierra, M.S. SLP-CF | 1235916164 | Speech-Language Pathologist | Sunrise, FL | 2023 |
| Cristina Sierra | 1740825827 | Peer Specialist | Los Angeles, CA | 2019 |
| Cristina Sierra, LCSW | 1831824333 | Clinical Social Worker | Pasadena, CA | 2022 |
| Cristina Sierra, RN | 1972238574 | Case Management Registered Nurse | Lynwood, CA | 2022 |
| Crystal Sierra, COTA/L | 1093358921 | Occupational Therapy Assistant | San Diego, CA | 2019 |
| Crystal Sierra, MD | 1336344902 | Pediatrics Physician | Galveston, TX | 2007 |
| Crystal Sierra | 1427626126 | Occupational Therapy Assistant | St Petersburg, FL | 2021 |
| Crystal Sierra | 1568152999 | Behavior Technician | Orange, CA | 2023 |
| Crystal Sierra | 1598266470 | Behavior Technician | Tucson, AZ | 2018 |
| Cynthia Sierra, LPC | 1417697285 | Professional Counselor | League City, TX | 2022 |
| Cynthia Sierra, MD | 1437252905 | Family Medicine Physician | Chula Vista, CA | 2006 |
| Cynthia Sierra, LPC | 1457110983 | Professional Counselor | San Antonio, TX | 2024 |
| Cynthia Sierra, LICSW-S | 1467789321 | Clinical Social Worker | Dothan, AL | 2009 |
| Cynthia Sierra, RN | 1982202305 | Registered Nurse | Methuen, MA | 2020 |
| Dagny Sierra | 1700473113 | Licensed Vocational Nurse | Sherman, TX | 2020 |
| Dalia Sierra | 1184404212 | Social Worker | Napa, CA | 2023 |
| Dallas Sierra, LICSW | 1629408331 | Clinical Social Worker | Miami, FL | 2013 |
| Danahe Sierra, ANP | 1720412307 | Adult Health Nurse Practitioner | Tampa, FL | 2013 |
| Daniel Sierra, DMD | 1699402891 | General Practice Dentistry | South Miami, FL | 2022 |
| Daniela Sierra, BA | 1083363782 | Behavior Analyst | Riverside, CA | 2022 |
| Daniella Sierra | 1821869025 | Behavior Technician | Greenacres, FL | 2024 |
| Danielle Sierra | 1003499666 | Student in an Organized Health Care Education/Training Program | Memphis, TN | 2021 |
| Danielle Sierra | 1104599109 | Family Nurse Practitioner | Orlando, FL | 2021 |
| Darelys Sierra | 1225843618 | Family Nurse Practitioner | Apopka, FL | 2025 |
| Darlene Sierra | 1497945927 | Technician | Los Angeles, CA | 2007 |
| Darlene Sierra, LMSW | 1568696250 | Social Worker | Staten Island, NY | 2009 |
| David Sierra, CRNA | 1033872395 | Certified Registered Nurse Anesthetist | Dallas, TX | 2021 |
| David Sierra | 1164064556 | Counselor | Manchester, CT | 2019 |
| Dayana Sierra, RBT | 1245800259 | Behavior Technician | Hollywood, FL | 2021 |
| Denice Sierra | 1306531132 | Behavior Analyst | Gardena, CA | 2023 |
| Denise Sierra, MS, MCAP | 1164823829 | Addiction (Substance Use Disorder) Counselor | Kissimmee, FL | 2014 |
| Denise Sierra | 1831921923 | Behavior Technician | Modesto, CA | 2024 |
| Dennis Sierra, DMD | 1215012562 | General Practice Dentistry | Boca Raton, FL | 2006 |
| Dennise Sierra | 1548639685 | Behavior Analyst | Mililani, HI | 2015 |
| Denyse Sierra | 1134520158 | Speech-Language Pathologist | Tampa, FL | 2014 |
| Derek Sierra, RBT | 1770331027 | Behavior Technician | San Diego, CA | 2024 |
| Desiree Sierra | 1013213230 | Marriage & Family Therapist | Long Beach, CA | 2011 |
| Desiree Sierra | 1114147865 | Addiction (Substance Use Disorder) Counselor | Long Beach, CA | 2007 |
| Desiree Sierra | 1124786488 | Behavior Technician | Burbank, CA | 2021 |
| Desiree Sierra, LPN | 1811517733 | Licensed Practical Nurse | Alamosa, CO | 2020 |
| Destinee Sierra | 1528869179 | Behavior Technician | Fort Worth, TX | 2025 |
| Diana Sierra | 1245197326 | Behavior Technician | Canoga Park, CA | 2026 |
| Diana Sierra | 1306235643 | Case Manager/Care Coordinator | Stockton, CA | 2015 |
| Diana Sierra | 1316813025 | Student in an Organized Health Care Education/Training Program | Hialeah, FL | 2025 |
| Diana Sierra, MASTERS | 1942044060 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2024 |
| Diana Sierra | 1942047899 | Student in an Organized Health Care Education/Training Program | West Valley City, UT | 2024 |
| Diego Sierra | 1124971544 | Pharmacist | San Antonio, TX | 2026 |
| Donna Sierra | 1851752877 | Counseling Psychologist | Barstow, CA | 2016 |
| Edgar Sierra, LMFT | 1063608008 | Marriage & Family Therapist | San Diego, CA | 2007 |
| Edith Sierra | 1871176552 | Community Health Worker | Venice, CA | 2021 |
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).