Steven J Koga, MD - Medicare Internal Medicine in Caldwell, ID

Steven J Koga, MD is a medicare enrolled "Internal Medicine" physician in Caldwell, Idaho. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 1991 and has 33 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice West Valley Medical Group Llc and his current practice location is 1906 Fairview Ave Ste 230, Caldwell, Idaho. You can reach out to his office (for appointments etc.) via phone at (208) 459-4667.

Steven J Koga is licensed to practice in Idaho (license number M6779) 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 1144275512.

Contact Information

Steven J Koga, MD
1906 Fairview Ave Ste 230,
Caldwell, ID 83605-5432
(208) 459-4667
(208) 459-3372

Map and Direction




Physician's Profile

Full NameSteven J Koga
GenderMale
SpecialityInternal Medicine
Experience33 Years
Location1906 Fairview Ave Ste 230, Caldwell, Idaho
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:
  • Steven J Koga attended and graduated from University Of Texas Southwestern Medical School At Dallas in 1991
  NPI Data:
  • NPI Number: 1144275512
  • Provider Enumeration Date: 05/24/2006
  • Last Update Date: 01/28/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9032101043
  • Enrollment ID: I20040721001720

Medical Identifiers

Medical identifiers for Steven J Koga such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144275512NPI-NPPES
002349300MedicaidID

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine M6779 (Idaho)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Encompass Health Home Health Of IdahoNampa, IDHome health agency
Horizon Home HealthMeridian, IDHome health agency
Journeys HospiceNampa, IDHospice
West Valley Medical CenterCaldwell, IDHospital
St Luke's Regional Medical CenterBoise, IDHospital
Saint Alphonsus Regional Medical CenterBoise, IDHospital
St Luke's Nampa Medical CenterNampa, IDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
West Valley Medical Group Llc872918031012

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. Steven J Koga allows following entities to bill medicare on his behalf.
Entity NameWest Valley Medical Group Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1871673798
PECOS PAC ID: 8729180310
Enrollment ID: O20070228000567

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. Steven J Koga 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
Steven J Koga, MD
Po Box 277976,
Atlanta, GA 30384-7976

Ph: () -
Steven J Koga, MD
1906 Fairview Ave Ste 230,
Caldwell, ID 83605-5432

Ph: (208) 459-4667

Reviews and Comments


Internal Medicine Doctors in Caldwell, ID

Karl P Undesser, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1906 Fairview Ave Ste 230, Caldwell, ID 83605
Phone: 208-795-5073    Fax: 208-402-3181
Dr. Lyndon C Box, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1906 Fairview Ave Ste 230, Caldwell, ID 83605
Phone: 208-459-4667    Fax: 208-442-6520
Nathanael Hogg, D.O
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1717 Arlington Ave, Caldwell, ID 83605
Phone: 808-294-7862    
Sherri L Brown, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 315 E Elm St, Caldwell, ID 83605
Phone: 208-459-7415    Fax: 208-453-3200
James C Field, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 315 E Elm St, Ste 350, Caldwell, ID 83605
Phone: 208-454-6363    Fax: 208-454-3512
Dr. Christopher Ryan Keller, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4620 Enterprise Way Ste 101, Caldwell, ID 83605
Phone: 208-846-8335    Fax: 208-846-8336

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.