Dr Shamsundar Ramrattan, DO - Medicare Internal Medicine in Canyon Country, CA

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Dr Shamsundar Ramrattan, DO is a medicare enrolled "Internal Medicine" physician in Canyon Country, California. He went to Des Moines University Of Osteopathic Medicine And Health Sciences and graduated in 1993 and has 33 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Choice Urgent Care, Lakeside Medical Organization A Medical Group Inc and his current practice location is 28504 Colhary Ct, Canyon Country, California. You can reach out to his office (for appointments etc.) via phone at (661) 252-7580.

Dr Shamsundar Ramrattan is licensed to practice in California (license number 2OA6991) 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 1598968844.

Contact Information

Dr Shamsundar Ramrattan, DO
28504 Colhary Ct,
Canyon Country, CA 91387-5316
(661) 252-7580
Not Available

Map and Direction




Physician's Profile

Full NameDr Shamsundar Ramrattan
GenderMale
SpecialityInternal Medicine
Experience33 Years
Location28504 Colhary Ct, Canyon Country, 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 Shamsundar Ramrattan attended and graduated from Des Moines University Of Osteopathic Medicine And Health Sciences in 1993
  NPI Data:
  • NPI Number: 1598968844
  • Provider Enumeration Date: 06/06/2007
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 4486672524
  • Enrollment ID: I20051107000792

Medical Identifiers

Medical identifiers for Dr Shamsundar Ramrattan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1598968844NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 2OA6991 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Choice Urgent Care42841683867
Lakeside Medical Organization A Medical Group Inc761800516666

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 Shamsundar Ramrattan allows following entities to bill medicare on his behalf.
Entity NameHigh Desert Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720196702
PECOS PAC ID: 6103730569
Enrollment ID: O20031118001191
Entity NameCounty Of Los Angeles
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851363188
PECOS PAC ID: 1850296534
Enrollment ID: O20031204001218
Entity NameLakeside Medical Organization A Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831426642
PECOS PAC ID: 7618005166
Enrollment ID: O20100505000015
Entity NameEmergency Physicians Urgent Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689963845
PECOS PAC ID: 8527234418
Enrollment ID: O20111227000049
Entity NameChoice Urgent Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316774243
PECOS PAC ID: 4284168386
Enrollment ID: O20241205003278

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 Shamsundar Ramrattan 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 Shamsundar Ramrattan, DO
28504 Colhary Ct,
Canyon Country, CA 91387-5316

Ph: (661) 252-7580		Dr Shamsundar Ramrattan, DO
28504 Colhary Ct,
Canyon Country, CA 91387-5316

Ph: (661) 252-7580

Reviews and Comments


Internal Medicine Doctors in Canyon Country, CA

Navid H. Massoudi, MD
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Practice Location: 17909 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-250-5230    
Vernon Henry Lackman, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17909 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-250-5244    Fax: 661-251-7308
Erik E Davydov, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17909 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-250-5230    Fax: 661-250-5275
Anush Hasratyan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17909 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-250-5230    Fax: 661-250-5283
Jin A Hur, D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14550 W Soledad Anyon Rd, Canyon Country, CA 91387
Phone: 661-250-5200    
Maria Rosario Zambrano, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 17909 Soledad Canyon Rd, Canyon Country, CA 91387
Phone: 661-250-5232    Fax: 661-250-5210

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.