Dr Ronald Castillo Tejada Jr, MD - Medicare Internal Medicine in Lakewood, CA

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Dr Ronald Castillo Tejada Jr, MD is a medicare enrolled "Internal Medicine" physician in Lakewood, California. His current practice location is 3300 E South St, Suite 205, Lakewood, California. You can reach out to his office (for appointments etc.) via phone at (562) 531-0377.

Dr Ronald Castillo Tejada Jr is licensed to practice in California (license number A118334) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1407165079.

Contact Information

Dr Ronald Castillo Tejada Jr, MD
3300 E South St, Suite 205,
Lakewood, CA 90805-4549
(562) 531-0377
(562) 531-1724

Map and Direction




Physician's Profile

Full NameDr Ronald Castillo Tejada Jr
GenderMale
SpecialityInternal Medicine
Location3300 E South St, Lakewood, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1407165079
  • Provider Enumeration Date: 09/30/2010
  • Last Update Date: 10/01/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 1557513207
  • Enrollment ID: I20121204000426

Medical Identifiers

Medical identifiers for Dr Ronald Castillo Tejada Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1407165079NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A118334 (California)Primary
207R00000XInternal Medicine 036130801 (Illinois)Secondary

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 Ronald Castillo Tejada Jr allows following entities to bill medicare on his behalf.
Entity NameHealthcare Partners Affiliates Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659312593
PECOS PAC ID: 7315842002
Enrollment ID: O20031204001258

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 Ronald Castillo Tejada Jr 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 Ronald Castillo Tejada Jr, MD
3300 E South St, Suite 205,
Lakewood, CA 90805-4549

Ph: (562) 531-0377		Dr Ronald Castillo Tejada Jr, MD
3300 E South St, Suite 205,
Lakewood, CA 90805-4549

Ph: (562) 531-0377

Reviews and Comments


Internal Medicine Doctors in Lakewood, CA

Dr. Joel Douglas Epstein, M.D.
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Practice Location: 3650 South St, Suite 308, Lakewood, CA 90712
Phone: 562-633-2275    Fax: 562-633-2579
Scott A Gordon, MD
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Practice Location: 5750 Downey Ave, Suite 100, Lakewood, CA 90712
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Sultanali Alidina, M.D.
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Practice Location: 3300 E South St, Suite 209, Lakewood, CA 90805
Phone: 562-630-3434    Fax: 562-630-5240
Dr. Kyaw Moe, MD
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Practice Location: 3650 South St, Suite 101, Lakewood, CA 90712
Phone: 562-286-6466    Fax: 562-286-6465
Dr. Milan Gaurang Rawal, M.D.
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Practice Location: 3650 South St, Suite 310, Lakewood, CA 90712
Phone: 562-531-1980    Fax: 562-531-7952
Khalid Saeed, MD
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Practice Location: 5750 Downey Ave, Suite 100, Lakewood, CA 90712
Phone: 562-630-3105    
Kartik Thaker, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3650 E South St, Suite # 210, Lakewood, CA 90712
Phone: 562-630-2360    Fax: 562-633-0510

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.