NPPES file of Aug 9, 2026

Doctors and health care providers in Greeley, CO

3,518 individual NPPES records list a practice address in Greeley, 9th of 193 Colorado cities. The largest group is mental health counselor: 346, 10% of the city's records, against 6% across Colorado. Page 40 of 71.

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

The 8 largest groups in Greeley

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

Greeley in Colorado

  • Rank in Colorado9th of 193 cities by records
  • Share of the state2.4% of Colorado's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.6% of all records
  • Mental Health Counselor rank8th of the 10 Colorado cities with the most

Compared with Colorado as a whole, Greeley has 22.7× the state's share of community health worker records and 0.58× its share of clinical social worker records.

Providers in Greeley, alphabetically

  1. Roland Martinez, D.C.Chiropractor1093843682
  2. Tanya Martinez, RBTBehavior Technician1508529868
  3. Aditya Marwaha, DDSDentist1164986923
  4. Shawna MascarenasCommunity Health Worker1013880202
  5. Victoria MasinBehavior Technician1992369334
  6. Brittany Mason, RBTBehavior Technician1942950639
  7. Cheryl Mason, BA, CASAddiction (Substance Use Disorder) Counselor1043880248
  8. Travis Mason, MDSurgical Oncology Physician1578720926
  9. Caitlin MastersPeer Specialist1275274201
  10. Michele MastersAddiction (Substance Use Disorder) Counselor1962045013
  11. Jean Masterson, DPMPodiatrist1346350857
  12. Brittany Mastin, BSBehavior Analyst1265808653
  13. Cheryl MatavaMental Health Counselor1043316516
  14. Nicole MaterCounselor1447005285
  15. Shane Matheson, HAD.0000608Hearing Instrument Specialist1215889316
  16. Jessica Mathis, MIBehavior Analyst1205229275
  17. Brittany Mathisen, AU.D.Audiologist1952613796
  18. Miles Matise, LPCProfessional Counselor1912017187
  19. Lawrence Matson, ED.DHealth Educator1174928121
  20. Autumn Matsutani, MA, CRC, LPC, NCCProfessional Counselor1770252124
  21. Kaila Mattera, OTD, OTR/LOccupational Therapist1457159873
  22. Briana MatthewsBehavior Technician1417726761
  23. Kimberly Matthews, RN, BSNRegistered Nurse1275219552
  24. Amy Mattox, M.D.Family Medicine Physician1386840239
  25. Ammon MaugaMental Health Counselor1740386192
  26. Chad Maurer, MDFamily Medicine Physician1154610129
  27. Arlene Maurice, P.A.Physician Assistant1780829895
  28. Mary Maxwell, MDAnesthesiology Physician1649265265
  29. Holly May, PH.D.School Psychologist1689081317
  30. Kimberly MayedaMental Health Counselor1659431427
  31. Ryan Mayeda, D.C.Chiropractor1992859821
  32. Vanessa Mayeda-GarnerBehavior Technician1972216422
  33. Sandra MayerMental Health Counselor1003912577
  34. Mechelle MayesMental Health Counselor1285054924
  35. Garrett Mayo, MDFamily Medicine Physician1619590494
  36. Ariel Mays-LewisMarriage & Family Therapist1538682943
  37. Heidi MazeCommunity Health Worker1790398923
  38. Patti McAdamsMental Health Counselor1639274442
  39. Isabella McArdel, PHARMDPharmacist1346747151
  40. Silas McArthur, CAC IIIAddiction (Substance Use Disorder) Counselor1588089833
  41. Jessica McBurneyMental Health Counselor1164528642
  42. Janis McCall, M.D.Family Medicine Physician1457356388
  43. Lana McCallum, NPNurse Practitioner1922079482
  44. Jason McCarl, MDPulmonary Disease Physician1144376757
  45. Shelly McCarthy, MS, CCC/SLPSpeech-Language Pathologist1427825603
  46. Lori McCarty, RNRegistered Nurse1841287562
  47. Raeanne McCartyPeer Specialist1255015350
  48. Trystan McCaugheyOccupational Therapist1447193396
  49. Amanda McCauley, PT, DPTPhysical Therapist1164867834
  50. Dalene McCloskey, PH. D.School Psychologist1265656359

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

Greeley, Colorado appears in the CMS National Plan and Provider Enumeration System with 3,518 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 Greeley - 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 Greeley 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 Greeley is weighted toward Mental Health Counselor (346 clinicians, followed by Community Health Worker with 235 and Student in an Organized Health Care Education/Training Program with 215). 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, Greeley reports roughly 59.9 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.

For Greeley 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 Greeley, CO?

There are 3,518 registered healthcare providers in Greeley, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Greeley?

The most common specialties in Greeley are Mental Health Counselor, Community Health Worker, Student in an Organized Health Care Education/Training Program, Behavior Technician, Professional Counselor. Mental Health Counselor has the most providers with 346.

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.