Dr Ran S Kim, MD - Medicare General Surgery in Walnut Creek, CA

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Dr Ran S Kim, MD is a medicare enrolled "Colon & Rectal Surgery" physician in Walnut Creek, California. He went to Medical College Of Pennsylvania and graduated in 1990 and has 35 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice Bass Medical Group and his current practice location is 1399 Ygnacio Valley Rd Ste 11d, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 430-5613.

Dr Ran S Kim is licensed to practice in California (license number G75587) 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 1437237005.

Contact Information

Dr Ran S Kim, MD
1399 Ygnacio Valley Rd Ste 11d,
Walnut Creek, CA 94598-2874
(925) 430-5613
(510) 340-5462

Map and Direction




Physician's Profile

Full NameDr Ran S Kim
GenderMale
SpecialityGeneral Surgery
Experience35 Years
Location1399 Ygnacio Valley Rd Ste 11d, Walnut Creek, 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:
  • Dr Ran S Kim attended and graduated from Medical College Of Pennsylvania in 1990
  NPI Data:
  • NPI Number: 1437237005
  • Provider Enumeration Date: 11/01/2006
  • Last Update Date: 04/22/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5890871941
  • Enrollment ID: I20090217000291

Medical Identifiers

Medical identifiers for Dr Ran S Kim such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437237005NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery G75587 (California)Secondary
208C00000XColon & Rectal Surgery G75587 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Muir Medical Center - Concord CampusConcord, CAHospital
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital

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. Dr Ran S Kim allows following entities to bill medicare on his behalf.
Entity NameJohn Muir Trauma Physicians Billing Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093864837
PECOS PAC ID: 3476542515
Enrollment ID: O20050420001452
Entity NameBass Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174253405
PECOS PAC ID: 9032111281
Enrollment ID: O20070201000181
Entity NameSun Healthcare And Surgery Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1609328129
PECOS PAC ID: 8022390491
Enrollment ID: O20170119000771
Entity NameAndes Medical Care, Apc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992388003
PECOS PAC ID: 9335548676
Enrollment ID: O20210519000509
Entity NameU Wellness Wound Care Apc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538966643
PECOS PAC ID: 1355868035
Enrollment ID: O20250506002538

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. Dr Ran S Kim 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
Dr Ran S Kim, MD
1399 Ygnacio Valley Rd Ste 11d,
Walnut Creek, CA 94598-2874

Ph: (925) 430-5613		Dr Ran S Kim, MD
1399 Ygnacio Valley Rd Ste 11d,
Walnut Creek, CA 94598-2874

Ph: (925) 430-5613

Reviews and Comments



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.