Doctors and health care providers in Oceanside, CA
3,438 individual NPPES records list a practice address in Oceanside, 66th of 812 California cities. The largest group is behavior technician: 314, 9% of the city's records, against 18% across California. Page 36 of 69.
The 8 largest groups in Oceanside
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Oceanside in California
- Rank in California66th of 812 cities by records
- Share of the state0.4% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups20.6% of all records
Compared with California as a whole, Oceanside has 9.3× the state's share of attendant care provider records and 0.52× its share of behavior technician records.
Providers in Oceanside, alphabetically
- Matthew Long, DO, MPHInternal Medicine Physician1740863273
- Michael Long, O.D.Optometrist1275653560
- Michelle LongPeer Specialist1013373950
- Sean LongoBehavior Technician1700553740
- Carrie Loomis, PT, MPTPhysical Therapist1255316733
- Audrey Lopez, REGISTERED NURSECommunity Health Registered Nurse1245355601
- David LopezBehavior Technician1538728050
- Filiberto LopezRehabilitation Practitioner1326654419
- Jessica Lopez, M.A.Mental Health Counselor1194156653
- Karla LopezBehavior Technician1063928844
- Manuel Lopez, DDSDentist1922203835
- Maritza LopezMarriage & Family Therapist1023361227
- Melissa Lopez, DPTPhysical Therapist1588957229
- Shana Lopez, RNRegistered Nurse1003281684
- Veronica LopezRegistered Nurse1497533566
- Melany Lopez GonzalezBehavior Technician1912724436
- Amber LordBehavior Technician1699426726
- Amy LoskaSocial Worker1215576004
- Soutsakhone LouangmilithAttendant Care Provider1427706399
- Lindsay Lovisa, RNAddiction (Substance Use Disorder) Registered Nurse1740805688
- Adriana Lozano, PEER SPECIALIST 175TPeer Specialist1720933039
- Angelica Lozano-Galvan, MSN, FNPFamily Nurse Practitioner1881018570
- David Lucero, MDFamily Medicine Physician1972511186
- Gustavo Lugo, M.D.Specialist1912941683
- Patricia Lundeen, PHNCommunity Health Registered Nurse1275652182
- Leanne Lundgren, PTPhysical Therapist1013395417
- Alivia LundquistPhysical Therapy Assistant1225916018
- Paige Luneau, CNMAdvanced Practice Midwife1164935086
- Sean Luong, MDGeneral Practice Physician1265231443
- Cassandra LuraPeer Specialist1063929966
- Brooke Luttmers, RADT-IAddiction (Substance Use Disorder) Counselor1144703539
- Aaron LyPhysical Therapist1508599820
- Amaya Ly, MSN, RN, PHNRegistered Nurse1285927582
- Kelly LylesSocial Worker1497335038
- Sean-Michael LyonsRehabilitation Practitioner1376877563
- Alexander Lytle, PT, DPTPhysical Therapist1275208837
- Gene Ma, M.D.Emergency Medicine Physician1568457240
- Victor Mac, DOPediatrics Physician1790281236
- Joseph Macaluso, PHARMACISTPharmacist1952744591
- Angela Maccollam, PTAPhysical Therapy Assistant1528669876
- Preston Macdonald, DDSDentist1710817044
- Ivan MaciasRegistered Nurse1265930846
- Colleen Maciel, NPFamily Nurse Practitioner1104777200
- Elizabeth Macintyre, M.D.Pediatrics Physician1336520766
- Lisa Mackey, RN, BSN, PHNSchool Registered Nurse1194296715
- Angel MacleanPeer Specialist1417309220
- Kathleen Macneil, MA, CCC-SLPSpeech-Language Pathologist1568891869
- Carolene Madden, M.D.Family Medicine Physician1689636946
- Kevin Madden, M.D.Family Medicine Physician1063473643
- Thomas Maddocks, DDSGeneral Practice Dentistry1801007539
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Oceanside, California appears in the CMS National Plan and Provider Enumeration System with 3,438 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 Oceanside - 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 Oceanside 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 Oceanside is weighted toward Behavior Technician (314 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 203 and Mental Health Counselor with 190). 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 California's population, Oceanside reports roughly 8.8 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 California's most common specialties, Internal Medicine Physician is the most prominent one with no provider currently listing a Oceanside practice address, a coverage gap Oceanside patients typically fill by traveling to a larger nearby hub.
For Oceanside 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 Oceanside, CA?
There are 3,438 registered healthcare providers in Oceanside, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Oceanside?
The most common specialties in Oceanside are Behavior Technician, Addiction (Substance Use Disorder) Counselor, Mental Health Counselor, Physical Therapist, Marriage & Family Therapist. Behavior Technician has the most providers with 314.
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.