2026 data CMS NPPES NUCC Taxonomy

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.

2,015
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Pharmacist
Top specialty
146 providers
Oregon
State
OR

2,015 healthcare providers across 20 specialties

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.

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.

For Clackamas patients, this directory is most useful as a starting shortlist — searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

2,015
Providers
20
Specialties
47.6
Per 100K (state)

Which specialties are most common in Clackamas

Pharmacist 146
Internal Medicine Physician 104
Emergency Medicine Physician 86
Family Medicine Physician 73
Physical Therapist 66
Student in an Organized Health Care Education/Training Program 62
Clinical Social Worker 58
Mental Health Counselor 58
Behavior Technician 57
Certified Registered Nurse Anesthetist 52
Speech-Language Pathologist 52
Registered Nurse 49
Massage Therapist 48
Pediatrics Physician 42
Diagnostic Radiology Physician 38
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist 34
Anesthesiology Physician 33
Physician Assistant 30
Dental Hygienist 30
Addiction (Substance Use Disorder) Counselor 30

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.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Clackamas, OR?
There are 2,015 registered healthcare providers in Clackamas, OR, covering 20 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, Family Medicine Physician, Physical Therapist. Pharmacist has the most providers with 146.

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.