Doctors and health care providers in Clackamas, OR
2,098 individual NPPES records list a practice address in Clackamas, 12th of 171 Oregon cities. The largest group is pharmacist: 125, 6% of the city's records, against 3% across Oregon. Page 23 of 42.
The 8 largest groups in Clackamas
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Clackamas in Oregon
- Rank in Oregon12th of 171 cities by records
- Share of the state1.7% of Oregon's records
- Specialties present25 or more taxonomy codes
- Top three groups15.3% of all records
- Pharmacist rank5th of the 10 Oregon cities with the most
Compared with Oregon as a whole, Clackamas has 28.3× the state's share of registered respiratory therapist records and 0.20× its share of mental health counselor records.
Providers in Clackamas, alphabetically
- Hjalmer LofstromRegistered Respiratory Therapist1578714077
- Jessica LogginsCertified Registered Nurse Anesthetist1609631704
- Ronald Lohman, MDOrthopaedic Surgery Physician1003889403
- Sandra LonerganPhysical Therapy Assistant1558884478
- Shane Long, M.A.Clinical Social Worker1275640831
- Trisha Lopez, WHNP-BCWomen's Health Nurse Practitioner1063867158
- Cassandra Loren, MDPediatrics Physician1083119341
- Thomas Lorence, M.D.Internal Medicine Physician1710090691
- Mina Lotfi, MDDiagnostic Radiology Physician1568880813
- Daniel Lotspeich, MDInternal Medicine Physician1003038332
- Robert Love, MACOM, LACAcupuncturist1023555380
- Tanya Love, DAOM, LACAcupuncturist1114319175
- Michele LovellAddiction (Substance Use Disorder) Counselor1407675481
- Catherine Lowe, LAC, CNMAdvanced Practice Midwife1912092313
- Hillary Lowenstein, M.D.Sleep Medicine (Psychiatry & Neurology) Physician1356548903
- David Luc, DDSDentist1972283794
- John Luc, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1508110214
- Gregory Lucas, M.ED.Mental Health Counselor1679285969
- Sucely LucasCase Manager/Care Coordinator1538936588
- Robert Ludemann, M.D. PH.D.Surgery Physician1356354161
- Cora Ludwig, MDInternal Medicine Physician1881856052
- Jessa Lulich, PHARM.D.Pharmacist1245829704
- Michelle Lum, MDEmergency Medicine Physician1255860987
- Philip Lund, M.D.Anesthesiology Physician1447322912
- Thorsten Lundsgaarde, M.D.Family Medicine Physician1033208848
- Shi Luo, RDHDental Hygienist1356972921
- Waleed Lutfiyya, M.D.Surgery Physician1770652752
- Marc Lutz, DOAnesthesiology Physician1326095654
- Mitchell Luu, M.D.Internal Medicine Physician1063778793
- Thao Luu, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1447137088
- Elizabeth LygoPhysical Therapist1821109265
- Hana Lyman, MSWClinical Social Worker1497677900
- Chan Macdonald, CCC-SLPSpeech-Language Pathologist1184478562
- Rebecca Macgregor, MDDiagnostic Radiology Physician1659485928
- Alain MachtelinckxPhysical Therapist1083723357
- Martha Maclin, MDDiagnostic Radiology Physician1447366638
- Cody Macmillan, M.D.Diagnostic Radiology Physician1578906525
- Kristy Maffit-Schluter, PHARMDPharmacist1225289606
- Leanna Mah, M.D.Urology Physician1649682592
- Robert Mahan, M.D.Diagnostic Radiology Physician1932291309
- Katelin MaherClinical Social Worker1376039768
- Shannon MahoneyPhysical Therapy Assistant1194333906
- Angela Major, RDRegistered Dietitian1053681338
- Waseem Makhoul, MDAllergy & Immunology Physician1588862312
- Mike MalachiPharmacist1801315460
- Omar Malik, MDAnesthesiology Physician1295998961
- Jasjot Mann, D.D.SDentist1205094927
- Joshua Mann, RNCertified Registered Nurse Anesthetist1134082365
- Jason Mannion, M.D.Internal Medicine Physician1467847681
- Annelise Manns, PSYDClinical Psychologist1316562424
How to read this directory
Clackamas, Oregon appears in the CMS National Plan and Provider Enumeration System with 2,098 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 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 2024 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 (125 clinicians, followed by Internal Medicine Physician with 101 and Emergency Medicine Physician with 94). 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 49.6 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.
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 Clackamas, OR?
There are 2,098 registered healthcare providers in Clackamas, OR, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Clackamas?
The most common specialties in Clackamas are Pharmacist, Internal Medicine Physician, Emergency Medicine Physician, Certified Registered Nurse Anesthetist, Family Medicine Physician. Pharmacist has the most providers with 125.
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.