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

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

0–100: 96 cities (56%). Below this entry. 100–200: 13 cities (8%). Below this entry. 200–300: 12 cities (7%). Below this entry. 300–400: 7 cities (4%). Below this entry. 400–500: 8 cities (5%). Below this entry. 500–600: 3 cities (2%). Below this entry. 600–700: 3 cities (2%). Below this entry. 700–800: 5 cities (3%). Below this entry. 800+: 23 cities (14%). This entry sits in this band. This city 0 800+ Oregon cities (providers), bucketed by value

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

providers

What this shows Pharmacist is the largest specialty (146 providers, 7.2% of the city), followed by Internal Medicine Physician.

Source CMS NPPES · city_top_specialties As of 2026

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.

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

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.
Related guides

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.

Compiled from official public sources by the editorial process.

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.