NPPES file of Aug 9, 2026

Doctors and health care providers in Longmont, CO

2,381 individual NPPES records list a practice address in Longmont, 16th of 193 Colorado cities. The largest group is mental health counselor: 184, 8% of the city's records, against 6% across Colorado. Page 25 of 48.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Longmont

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Longmont in Colorado

  • Rank in Colorado16th of 193 cities by records
  • Share of the state1.6% of Colorado's records
  • Specialties present25 or more taxonomy codes
  • Top three groups18.7% of all records

Compared with Colorado as a whole, Longmont has 3× the state's share of behavior analyst records and 0.43× its share of behavior technician records.

Providers in Longmont, alphabetically

  1. Derek Leopold, MDSurgery Physician1255645214
  2. Mark Lersch, LPCMental Health Counselor1437394699
  3. Kristen Lervik, PA-CPhysician Assistant1194288522
  4. Laurel Leslie-Martin, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1043454317
  5. Zachery Lesniak, D.CChiropractor1346562923
  6. Grace Levasseur, MS, CCC-SLPSpeech-Language Pathologist1104274539
  7. David Leverett, ODCorneal and Contact Management Optometrist1356493431
  8. Allyson Levin, LMTMassage Therapist1982416970
  9. Ruth LevinMassage Therapist1952064982
  10. Allison Levine, PHDClinical Psychologist1891897971
  11. Diane Levine, WHNP-BCWomen's Health Nurse Practitioner1992297873
  12. Lauren LevineMental Health Counselor1992571160
  13. Peter Levine, PHDClinical Psychologist1306948401
  14. Tana Levine, MDInternal Medicine Physician1831161108
  15. Seth Levulis, PHARM.D.Pharmacist1215590302
  16. Bryan Levy, D.O.Surgery Physician1336522820
  17. Skye Levy, MA, LPCCMental Health Counselor1821852336
  18. Scot Lewey, D.O.Gastroenterology Physician1972695765
  19. Holly Lewis, MDInternal Medicine Physician1093896342
  20. Kristin Lewis, PTPhysical Therapist1699895763
  21. Tom LiermanBehavior Technician1760094544
  22. Sara Lieven, PT, DPTPhysical Therapist1215656897
  23. Kaitlyn Liggett, BCBABehavior Analyst1295245157
  24. Hui-Chung LimBehavior Analyst1336751197
  25. Georgia Lima, MASSAGE THERAPISTMassage Therapist1225389687
  26. Chih-Ta Lin, M.D.Neurological Surgery Physician1265759955
  27. Harry Linardos, O.D.Corneal and Contact Management Optometrist1508033887
  28. Christopher Lindberg, PTPhysical Therapist1275659419
  29. Heidi Lindeman, M.DIV, M.A, LPCCMental Health Counselor1568133288
  30. Elizabeth Linder, MA, MT-BCMusic Therapist1407405392
  31. Brooke Lindquist, M.S.W., M.A.Mental Health Counselor1699824508
  32. Elizabeth Lingg, M.A CCC-SLPSpeech-Language Pathologist1326432519
  33. Emily Lingle, LPCCounselor1417595232
  34. Tracy Lippard, M.D.Internal Medicine Physician1487784245
  35. Elizabeth Litfin, LPCProfessional Counselor1205494036
  36. John Litterine-Kaufman, VMDVeterinarian1265849590
  37. Evan Little, P.T.Orthopedic Physical Therapist1760647333
  38. Brian Liu, DOEmergency Medicine Physician1093380735
  39. Kaia Livingstone, PSYCHOTHERAPISTMental Health Counselor1275095481
  40. Ivette LlamasInterpreter1386519452
  41. Michelle LoaderMedical Physician Assistant1730376328
  42. Shelby Logan, MA, LPCCMental Health Counselor1558067124
  43. Brenda LogsdonPharmacist1366862500
  44. Hanna LomonacoSocial Worker1316820871
  45. Gabriela Londono, PA-CPhysician Assistant1689432692
  46. Timothy LongProfessional Counselor1558743294
  47. Gail Longenecker, DIP LCMMassage Therapist1043440266
  48. Chandra Lontz-Smith, LPCProfessional Counselor1437799251
  49. Krista Loos-Christensen, RDRegistered Dietitian1467077974
  50. Amanda LopezSpeech-Language Pathologist1043925944

The largest Colorado cities

  1. Denver25,068
  2. Colorado Springs19,771
  3. Aurora17,400
  4. Fort Collins6,928
  5. Boulder5,635

All of Colorado →

How to read this directory

Longmont, Colorado appears in the CMS National Plan and Provider Enumeration System with 2,381 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Longmont - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Longmont practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Longmont is weighted toward Mental Health Counselor (184 clinicians, followed by Physical Therapist with 145 and Massage Therapist with 116). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Colorado's population, Longmont reports roughly 40.5 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Colorado's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Longmont practice address, a coverage gap Longmont patients typically fill by traveling to a larger nearby hub.

For Longmont patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Longmont, CO?

There are 2,381 registered healthcare providers in Longmont, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Longmont?

The most common specialties in Longmont are Mental Health Counselor, Physical Therapist, Massage Therapist, Professional Counselor, Clinical Social Worker. Mental Health Counselor has the most providers with 184.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

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.