Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ennis Zaitoon, MD

Individual provider Internal Medicine Physician · NPI 1235307141

Ennis Zaitoon, MD is an Internal Medicine in Corona, California. Qualified in 2004, 22 years ago. Practices with Riverside Medical Clinic Inc, a 174-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California and Indiana.

Years since qualifying
22
Licensed in
CA, IN
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

21634 Retreat Pkwy
Corona, CA 92883-6100
Phone: (951) 493-6870
Fax: (951) 826-8157
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 7905 Calumet Ave, Munster, IN 46321-1215 — (219) 836-5800

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C160730 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01067223 (IN)

Record details

NPI number1235307141
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2008
Last updated in NPPESSeptember 17, 2024
Certification dateSeptember 17, 2024
Mailing address21634 Retreat Pkwy, Corona, CA 92883-6100

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Riverside Medical Clinic Inc — 174 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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