Marco Ruiz Santillan, MD - Medicare Endocrinology in New York, NY

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Marco Ruiz Santillan, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in New York, New York. He graduated from medical school in 2011 and has 15 years of diverse experience with area of expertise as Endocrinology. He is a member of the group practice Group Health Inc and his current practice location is 110 E 59th St Fl 8, New York, New York. You can reach out to his office (for appointments etc.) via phone at (212) 434-3934.

Marco Ruiz Santillan is licensed to practice in New York (license number 289988) 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 1831508654.

Contact Information

Marco Ruiz Santillan, MD
110 E 59th St Fl 8,
New York, NY 10022-1304
(212) 434-3934
(212) 434-4974

Map and Direction




Physician's Profile

Full NameMarco Ruiz Santillan
GenderMale
SpecialityEndocrinology
Experience15 Years
Location110 E 59th St Fl 8, New York, New York
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:
  • Marco Ruiz Santillan graduated from medical school in 2011
  NPI Data:
  • NPI Number: 1831508654
  • Provider Enumeration Date: 08/06/2014
  • Last Update Date: 09/01/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 1557632767
  • Enrollment ID: I20240821000553

Medical Identifiers

Medical identifiers for Marco Ruiz Santillan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831508654NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 289988 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Regions HospitalSaint paul, MNHospital
Park Nicollet Methodist HospitalSaint louis park, MNHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Group Health Inc17592939541627

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. Marco Ruiz Santillan allows following entities to bill medicare on his behalf.
Entity NameGroup Health Plan Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710924683
PECOS PAC ID: 1759293954
Enrollment ID: O20031105000417

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. Marco Ruiz Santillan 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
Marco Ruiz Santillan, MD
110 E 59th St Rm 8b,
New York, NY 10022-1359

Ph: (212) 434-3994		Marco Ruiz Santillan, MD
110 E 59th St Fl 8,
New York, NY 10022-1304

Ph: (212) 434-3934

Reviews and Comments


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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).

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