Dr Elsa Cassandra Santillana, DO - Medicare Internal Medicine in Orange, CA

Dr Elsa Cassandra Santillana, DO is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Orange, California. Her current practice location is 333 City Blvd W Ste 400, Orange, California. You can reach out to her office (for appointments etc.) via phone at (714) 456-6870.

Dr Elsa Cassandra Santillana is licensed to practice in California (license number 21075) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1194187781.

Contact Information

Dr Elsa Cassandra Santillana, DO
333 City Blvd W Ste 400,
Orange, CA 92868-2994
(714) 456-6870
Not Available



Physician's Profile

Full NameDr Elsa Cassandra Santillana
GenderFemale
SpecialityInternal Medicine - Pulmonary Disease
Location333 City Blvd W Ste 400, Orange, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1194187781
  • Provider Enumeration Date: 03/23/2016
  • Last Update Date: 06/29/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7618357849
  • Enrollment ID: I20220706002822

Medical Identifiers

Medical identifiers for Dr Elsa Cassandra Santillana such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194187781NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RP1001XInternal Medicine - Pulmonary Disease DO.2807 (Alabama)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 2807 (Alabama)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 21075 (California)Primary

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 Elsa Cassandra Santillana allows following entities to bill medicare on her behalf.
Entity NameUniversity Of Alabama Health Services Foundation, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093768723
PECOS PAC ID: 1951213107
Enrollment ID: O20031105000261

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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 Elsa Cassandra Santillana 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 Elsa Cassandra Santillana, DO
333 City Blvd W Ste 400,
Orange, CA 92868-2994

Ph: () -
Dr Elsa Cassandra Santillana, DO
333 City Blvd W Ste 400,
Orange, CA 92868-2994

Ph: (714) 456-6870

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Internal Medicine Doctors in Orange, CA

Michael Cheng, DO
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7110    
Harry Nguyen, D.O.
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7002    
Millie Arora,
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, City Tower, Suite 400, Orange, CA 92868
Phone: 714-456-5691    Fax: 714-456-8874
Dr. Sarah Jeanette Ettinger, M.D.
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-5135    
Dr. Antonio Halais Frangieh, MD, MPH
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Dr. Andy Yen-tang Lee, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Dr. Jesse John Goitia Jr., M.D.
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-880-7812    

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