NPPES file of Aug 9, 2026

Doctors and health care providers in Lone Tree, CO

1,405 individual NPPES records list a practice address in Lone Tree, 23rd of 193 Colorado cities. The largest group is students in training: 114, 8% of the city's records, against 3% across Colorado. Page 20 of 29.

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

Lone Tree in Colorado

  • Rank in Colorado23rd of 193 cities by records
  • Share of the state0.9% of Colorado's records
  • Specialties present25 or more taxonomy codes
  • Top three groups20% of all records
  • Students in training rank7th of the 10 Colorado cities with the most

Compared with Colorado as a whole, Lone Tree has 7.9× the state's share of gastroenterology physician records and 0.30× its share of clinical social worker records.

Providers in Lone Tree, alphabetically

  1. Caden NowakStudent in an Organized Health Care Education/Training Program1487281200
  2. Kirsty O'Donovan, MDPsychiatry Physician1568599520
  3. Joseph O'Leary, D.D.S.General Practice Dentistry1306063995
  4. Jeannie O'Rourke, D.P.M.Foot & Ankle Surgery Podiatrist1942397575
  5. Kate Odenwald, RN, ACNP-BCAcute Care Nurse Practitioner1336441021
  6. Shannon Oehrle, FNP-CFamily Nurse Practitioner1598364952
  7. Sandy Oesterreicher, MDPediatric Gastroenterology Physician1427142843
  8. Kimberly Olson, RNHigh-Risk Obstetric Registered Nurse1205549888
  9. Samuel Olson, MDInternal Medicine Physician1326665654
  10. Galina Omelioussik, NPFamily Nurse Practitioner1609121102
  11. Stephanie OnanClinical Social Worker1184442535
  12. Adoniz OrdonezSurgical Assistant1922798727
  13. Trevor Oren, MDOrthopaedic Surgery Physician1679610950
  14. Gretchen Orosz, MDGeriatric Medicine (Internal Medicine) Physician1609864842
  15. Richard Ort, M.D.Dermatology Physician1093776593
  16. Alisia Ortiz, WHNP-BC, MSNWomen's Health Nurse Practitioner1922417781
  17. Angela Osborn, DDSGeneral Practice Dentistry1578678637
  18. Rebecca OsborneStudent in an Organized Health Care Education/Training Program1013862317
  19. Heidi Oster, M.D.Obstetrics & Gynecology Physician1902863541
  20. Linnea Osterberg, DPTPhysical Therapist1962109553
  21. Ronald Ott, PACSurgical Physician Assistant1700896966
  22. Marc Otto, O.D.Optometrist1720413552
  23. April Ouedraogo, M.A. EDSMental Health Counselor1558835348
  24. Zach Overgaard, PT, DPTPhysical Therapist1891177598
  25. Karen Palmer, RNCHigh-Risk Obstetric Registered Nurse1841991692
  26. Sarah Palmer, PA-CSurgical Physician Assistant1053710574
  27. Fatima Sheilla PalombaAmbulatory Care Registered Nurse1255704110
  28. Jennifer Pan, M.D.Ophthalmology Physician1871999805
  29. Ximena Pareja, DDSPediatric Dentistry1366419855
  30. Elise PariseauStudent in an Organized Health Care Education/Training Program1609677798
  31. Charles Park, M.D.Psychiatry Physician1235214131
  32. Hy Gia Park, MPH, MS, MDPsychiatry Physician1649444829
  33. Gannon Parker, PAPhysician Assistant1316672215
  34. Susan Pash-Lohr, DOFamily Medicine Physician1609837186
  35. Devang Patel, M.D.Internal Medicine Physician1477934396
  36. Isheet Patel, M.D.Internal Medicine Physician1275914194
  37. Rachel Patel, M.D.Ophthalmology Physician1578099073
  38. Shivani Pathak, M.D.Otolaryngology Physician1962898361
  39. Cary Patt, M.DGastroenterology Physician1801900048
  40. Casey Patterson, PHARMDPharmacist1699053439
  41. Marissa Patterson, DOStudent in an Organized Health Care Education/Training Program1518768852
  42. Mary Peiffer, NPNurse Practitioner1790454601
  43. Melissa Pelkey, MDAnesthesiology Physician1407615909
  44. Ricardo Pena, MDSurgery Physician1982720512
  45. Kimberly Pengel, MDOrthopaedic Surgery Physician1871680926
  46. Stephanie Penrose, M.D.Obstetrics & Gynecology Physician1770625535
  47. Michael Peppler, DMDDentist1942492335
  48. Mark Perea, MDFamily Medicine Physician1225092414
  49. Cynthia Peschong, ARNP, FNP-BCFamily Nurse Practitioner1164709366
  50. Justin PetersInternal Medicine Physician1750843801

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

Lone Tree, Colorado appears in the CMS National Plan and Provider Enumeration System with 1,405 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 Lone Tree - 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 Lone Tree 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 Lone Tree is weighted toward Student in an Organized Health Care Education/Training Program (114 clinicians, followed by Registered Nurse with 91 and Physician Assistant with 76). 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, Lone Tree reports roughly 23.9 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.

Of Colorado's most common specialties, Behavior Technician is the most prominent one with no provider currently listing a Lone Tree practice address, a coverage gap Lone Tree patients typically fill by traveling to a larger nearby hub.

For Lone Tree 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 Lone Tree, CO?

There are 1,405 registered healthcare providers in Lone Tree, CO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Lone Tree?

The most common specialties in Lone Tree are Student in an Organized Health Care Education/Training Program, Registered Nurse, Physician Assistant, Physical Therapist, Family Nurse Practitioner. Student in an Organized Health Care Education/Training Program has the most providers with 114.

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.