Mrs John C Koumas, DO - Medicare Family Practice in West Covina, CA

Mrs John C Koumas, DO is a medicare enrolled "Family Medicine" physician in West Covina, California. He went to College Of Osteo Med Of The Pacific At Pomona and graduated in 1987 and has 37 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Emanate Health Medical Care Foundation, Emanate Health Medical Group, Lake Forest Medical Group, Inc. and his current practice location is 1135 S Sunset Ave Ste 200, West Covina, California. You can reach out to his office (for appointments etc.) via phone at (626) 732-8390.

Mrs John C Koumas is licensed to practice in California (license number 20A5515) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1134111958.

Contact Information

Mrs John C Koumas, DO
1135 S Sunset Ave Ste 200,
West Covina, CA 91790-3964
(626) 732-8390
Not Available

Map and Direction




Physician's Profile

Full NameMrs John C Koumas
GenderMale
SpecialityFamily Practice
Experience37 Years
Location1135 S Sunset Ave Ste 200, West Covina, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mrs John C Koumas attended and graduated from College Of Osteo Med Of The Pacific At Pomona in 1987
  NPI Data:
  • NPI Number: 1134111958
  • Provider Enumeration Date: 08/17/2005
  • Last Update Date: 02/01/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4981665379
  • Enrollment ID: I20041020001393

Medical Identifiers

Medical identifiers for Mrs John C Koumas such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134111958NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 20A5515 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Emanate Health Inter-community HospitalCovina, CAHospital
Memorialcare Saddleback Medical CenterLaguna hills, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Emanate Health Medical Care Foundation983054498023
Emanate Health Medical Group498198686666
Lake Forest Medical Group, Inc.32745946502

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mrs John C Koumas allows following entities to bill medicare on his behalf.
Entity NameLake Forest Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1558429092
PECOS PAC ID: 3274594650
Enrollment ID: O20041019001334
Entity NameFamily Associated Medical Group Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083782122
PECOS PAC ID: 8729049986
Enrollment ID: O20041020001396
Entity NameEmanate Health Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326582743
PECOS PAC ID: 4981986866
Enrollment ID: O20170130001647
Entity NameEmanate Health Medical Care Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467195073
PECOS PAC ID: 9830544980
Enrollment ID: O20231011003976

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mrs John C Koumas is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mrs John C Koumas, DO
767 S Sunset Ave, Ste. #4,
West Covina, CA 91790-3546

Ph: (626) 337-7204
Mrs John C Koumas, DO
1135 S Sunset Ave Ste 200,
West Covina, CA 91790-3964

Ph: (626) 732-8390

Reviews and Comments


Family Medicine Doctors in West Covina, CA

Mohammed Yousuf Zaveri, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1135 S Sunset Ave Ste 401, West Covina, CA 91790
Phone: 626-732-8391    
John Quiamas, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1135 S Sunset Ave Ste 401, West Covina, CA 91790
Phone: 626-732-8390    
Rafael Nunez Gutierrez, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1249 S Sunset Ave, West Covina, CA 91790
Phone: 180-078-0127    
Cynthia Chen-joea, D.O,
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1135 S Sunset Ave Ste 401, West Covina, CA 91790
Phone: 626-732-8391    
Dr. Hemalatha R Parekh, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 333 N Sunset Ave, West Covina, CA 91790
Phone: 626-960-5461    Fax: 626-962-7199
Dr. Lynn Amores, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 420 S Glendora Ave, West Covina, CA 91790
Phone: 323-337-1886    
Dr. Adelaide Willis, MD
Family Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 1500 W West Covina Pkwy, West Covina, CA 91790
Phone: 626-960-8614    Fax: 626-960-8624

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.