Doctors in Clackamas, OR
Active healthcare providers in Clackamas sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.
Where this city sits in the corpus
Clackamas ranks 12th among 170 Oregon cities by CMS provider count, holding 1.6% of the state's NPIs, led by Pharmacist.
- 2,015
- NPPES providers in city
- 12th
- of 170 OR cities
- 1.6%
- of Oregon providers
- 16.7%
- in top 3 specialties
Clackamas ranks #5 of 10 Oregon cities for Pharmacist.
Where Clackamas ranks among Oregon cities
Provider count vs every Oregon city in CMS NPPES (170 cities)
2,015 Top 7% higher than 93% of 170 cities
Each bar is a band; taller bars hold more cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS National Plan & Provider Enumeration System (NPPES) · 2026
Specialty mix in Clackamas
Share of the city's NPPES registrations by NUCC taxonomy
- Pharmacist
Pharmacist
146 providers
- Internal Medicine Ph…
Internal Medicine Physician
104 providers
- Emergency Medicine P…
Emergency Medicine Physician
86 providers
- Family Medicine Phys…
Family Medicine Physician
73 providers
- Physical Therapist
Physical Therapist
66 providers
- Student in an Organi…
Student in an Organized Health Care Education/Training Program
62 providers
- Clinical Social Worker 58
Clinical Social Worker
58 providers
- Mental Health Counse… 58
Mental Health Counselor
58 providers
- Behavior Technician 57
Behavior Technician
57 providers
- Certified Registered… 52
Certified Registered Nurse Anesthetist
52 providers
What this shows Pharmacist is the largest specialty (146 providers, 7.2% of the city), followed by Internal Medicine Physician.
City vs state specialty index
Specialties Clackamas has more, and fewer, of than Oregon average
Each multiple is this city's share of a specialty divided by that specialty's average share across Oregon , Clackamas over-indexes certified registered nurse anesthetist at 7.3× the state average and under-indexes mental health counselor at 0.24×. This reflects local practice structure, not care quality.
More common here than Oregon average
Less common here than Oregon average
How to read this directory & data limitations
Clackamas, Oregon appears in the CMS National Plan and Provider Enumeration System with 2,015 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Clackamas - 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 Clackamas 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 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in Clackamas is weighted toward Pharmacist (146 clinicians, followed by Internal Medicine Physician with 104 and Emergency Medicine Physician with 86). 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 Oregon's population, Clackamas reports roughly 47.6 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 Oregon's most common specialties, Counselor is the most prominent one with no provider currently listing a Clackamas practice address, a coverage gap Clackamas patients typically fill by traveling to a larger nearby hub.
For Clackamas 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.
Which specialties are most common in Clackamas
| # | Specialty | Providers | % of city |
|---|---|---|---|
| 1 | Pharmacist | 146 | 7.2% |
| 2 | Internal Medicine Physician | 104 | 5.2% |
| 3 | Emergency Medicine Physician | 86 | 4.3% |
| 4 | Family Medicine Physician | 73 | 3.6% |
| 5 | Physical Therapist | 66 | 3.3% |
| 6 | Student in an Organized Health Care Education/Training Program | 62 | 3.1% |
| 7 | Clinical Social Worker | 58 | 2.9% |
| 8 | Mental Health Counselor | 58 | 2.9% |
| 9 | Behavior Technician | 57 | 2.8% |
| 10 | Certified Registered Nurse Anesthetist | 52 | 2.6% |
| 11 | Speech-Language Pathologist | 52 | 2.6% |
| 12 | Registered Nurse | 49 | 2.4% |
| 13 | Massage Therapist | 48 | 2.4% |
| 14 | Pediatrics Physician | 42 | 2.1% |
| 15 | Diagnostic Radiology Physician | 38 | 1.9% |
Healthcare Providers (Page 22)
| Name |
|---|
| Vivian Liu, CNM Advanced Practice Midwife |
| Yun-Sheen Liu, M.D. Anesthesiology Physician |
| Diane Llewellyn, COTA Occupational Therapy Assistant |
| Clee Lloyd, MD Otolaryngology Physician |
| Thomas Lloyd, CNM Advanced Practice Midwife |
| Elsbeth Lo, MD Family Medicine Physician |
| Kana Lockhart Massage Therapist |
| Hjalmer Lofstrom Registered Respiratory Therapist |
| Jessica Loggins Registered Nurse |
| Ronald Lohman, MD Orthopaedic Surgery Physician |
| Sandra Lonergan Physical Therapy Assistant |
| Shane Long, M.A. Clinical Social Worker |
| Trisha Lopez, WHNP-BC Obstetrics & Gynecology Nurse Practitioner |
| Cassandra Loren, MD Pediatrics Physician |
| Thomas Lorence, M.D. Internal Medicine Physician |
| Mina Lotfi, MD Diagnostic Radiology Physician |
| Daniel Lotspeich, MD Internal Medicine Physician |
| Robert Love, MACOM, LAC Acupuncturist |
| Tanya Love, DAOM, LAC Acupuncturist |
| Michele Lovell Addiction (Substance Use Disorder) Counselor |
| Catherine Lowe, LAC, CNM Acupuncturist |
| Hillary Lowenstein, M.D. Sleep Medicine (Psychiatry & Neurology) Physician |
| David Luc, DDS Dentist |
| John Luc, PHARM.D. Pharmacist |
| Gregory Lucas, M.ED. Mental Health Counselor |
| Sucely Lucas Peer Specialist |
| Robert Ludemann, M.D. PH.D. Surgery Physician |
| Cora Ludwig, MD Internal Medicine Physician |
| Jessa Lulich, PHARM.D. Pharmacist |
| Michelle Lum, MD Emergency Medicine Physician |
| Haley Lund Pharmacist |
| Philip Lund, M.D. Anesthesiology Physician |
| Thorsten Lundsgaarde, M.D. Family Medicine Physician |
| Tonya Lundsgaarde, M.D. Family Medicine Physician |
| Shi Luo, RDH Dental Hygienist |
| Waleed Lutfiyya, M.D. Surgery Physician |
| Marc Lutz, DO Anesthesiology Physician |
| Mitchell Luu, M.D. Internal Medicine Physician |
| Thao Luu, PHARMD Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist |
| Elizabeth Lygo Physical Therapist |
| Chan Macdonald, CCC-SLP Speech-Language Pathologist |
| Rebecca Macgregor, MD Diagnostic Radiology Physician |
| Alain Machtelinckx Physical Therapist |
| Martha Maclin, MD Diagnostic Radiology Physician |
| Cody Macmillan, M.D. Student in an Organized Health Care Education/Training Program |
| Kristy Maffit-Schluter, PHARMD Pharmacist |
| Leanna Mah, M.D. Urology Physician |
| Robert Mahan, M.D. Diagnostic Radiology Physician |
| Katelin Maher Clinical Social Worker |
| Shannon Mahoney Physical Therapy Assistant |
Nearby Cities in Oregon
Other Oregon cities with provider coverage in the CMS NPPES registry.
Frequently Asked Questions
How many doctors are in Clackamas, OR?
What are the most common medical specialties in Clackamas?
Related guides
Explore Oregon
Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.