Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Matthew Timothy Long, DO, MPH

Individual provider Internal Medicine Physician · NPI 1740863273

Matthew Timothy Long, DO, MPH practises Internal Medicine in Oceanside, California. Graduated from Arizona College of Osteopathic Medicine Mid Western University in 2021, 5 years ago. Practices with Hospitalist Medicine Physicians of California Inc, a 120-clinician group and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
5
Trained at
Arizona College of Osteopathic Medicine Mid Western University
Licensed in
AZ, CA
In the registry since
2021
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

4002 Vista Way
Oceanside, CA 92056-4506
Phone: (760) 966-2499
Fax: (540) 779-7875
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20A22404 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence R3570 (AZ)

Record details

NPI number1740863273
Entity typeIndividual (Type 1)
GenderMale
Credentials DO , MPH
Sole proprietorYes
NPI enumeratedMay 3, 2021
Last updated in NPPESJuly 8, 2024
Certification dateJuly 8, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolARIZONA COLLEGE OF OSTEOPATHIC MEDICINE MID WESTERN UNIVERSITY
Graduated 2021 (5 years in practice)
Group practice Hospitalist Medicine Physicians Of California Inc — 120 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients54
Services billed 185 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hospitalist Medicine Physicians of California Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 120 clinicians in the practice; 12 are shown here.

Other providers in Oceanside