John C Koumas, D.O.
John C Koumas is a Family Medicine specialist based in West Covina, CA with over 39 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across CA can see John C Koumas, D.O. in person in West Covina or via virtual visit — no travel required. He graduated from College of Osteo Med of the Pacific at Pomona in 1987 and has 39+ years of clinical experience. Among his Medicare patients, common conditions include high cholesterol, hypertension, and arthritis (per CMS data). CMS MIPS quality score: 79.29/100 (2023).
At a glance
- Uses generic medications more than 73% of reporting doctors in California
- Federal MIPS score higher than 45% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 842dNPPES updated 2024-02-01 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
1135 S Sunset Ave Ste 200, West Covina, CA 91790-3964
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in California, favors affordable generic drugs over brand-name ones.
MIPS Score
202379.29/100
California avg: 78.6 · US avg: 83.6
⚠ Lower than most doctors nationally(-4.3 pts)
Average range among MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better91.1%
California avg: 83.3 · US avg: 82.8
✓ Higher than most doctors nationally(+8.3 pts)
Better than 73% of reporting doctors in CaliforniaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
191
Unique beneficiaries
Standard volumePrescription Recipients
407
Patients prescribed
Prescriptions Written
3,572
Total claims
Total Medicare drug cost: $243k
Percentile rankings compared against 9,360 reporting peers in California.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-1%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-14%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-3%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-9%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$25 received from industry
1 transaction reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to John C Koumas's NPI.
Patient Reviews
No patient reviews yet. If you've seen John C Koumas, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1987
College of Osteo Med of the Pacific at Pomona
Board certified · Jan 31, 2024
Self-reported via NPPES
39 years in practice
Senior practitioner
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Taxonomy: 207Q00000X
Education & Training
College of Osteo Med of the Pacific at Pomona (Class of 1987)
Mailing address
767 S Sunset Ave Ste. #4, West Covina, CA 91790-3546
Differs from practice location
Primary hospital affiliation: Psychiatric
CMS Certification Number: 194117
View hospital on Medicare Care CompareVirtual Family Medicine Care With John C Koumas
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with John C Koumas for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to West Covina required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about John C Koumas
NPI records show Dr. Koumas as active with telehealth listed in West Covina, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (626) 732-8390.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact John C Koumas
Practice Location
1135 S Sunset Ave Ste 200, West Covina, CA 91790-3964
Mailing Address
767 S Sunset Ave Ste. #4, West Covina, CA 91790-3546
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers