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Clinic Type

Internal Medicine

Address

440 W. Foothill Blvd., Glendora, CA 91741; 1125 Via Verde, San Dimas, CA 91773; 1135 S. Sunset Ave., Suite 401, West Covina, CA 91790; 315 N Third Ave #207, Covina, CA 91723

Phone

626.963.9402

Email

cancer@emanatehealth.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Primary care
  • Internal medicine
  • Family medicine

Insurance & Payment

Languages Spoken

  • Spanish

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye: 2.8/5 (16)
  • Healthgrades: 3.7/5 (9)
  • WebMD Care: 5.0/5 (17)
  • WebMD Care: 4.5/5 (27)

Patients praise

  • doctors described as thorough, knowledgeable, and empathetic
  • efficient and helpful staff experiences reported for some offices
  • availability of multilingual providers (Spanish, Chinese, Tagalog)
  • comprehensive care for chronic conditions like diabetes and hypertension

Common complaints

  • rude, short-tempered, or unprofessional office staff
  • long wait times and difficulty with appointments
  • perceived lack of thoroughness or empathy in some doctors
  • concerns about administrative processes like prescription renewals

"Dr. Koumas is sweet and attentive. Unfortunately, his intake clerks... are short tempered and rude."

Birdeye

"unprofessional doctor with rude staffs, you will definitely regret"

Healthgrades

"Dr. Kwok gave me a physical, listened to all my issues, prescribed medicine, gave me a referral and before I left the office I had an appointment with a specialist. He was very knowledgeable and I was very impressed."

Vitals

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 10, 2026.

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