Dr Loretta Sullivan-chang, MD - Medicare Internal Medicine in Greenwood Village, CO

Dr Loretta Sullivan-chang, MD is a medicare enrolled "Internal Medicine" physician in Greenwood Village, Colorado. Her current practice location is 4950 S Yosemite St # F2-365, Greenwood Village, Colorado. You can reach out to her office (for appointments etc.) via phone at (650) 847-7287.

Dr Loretta Sullivan-chang is licensed to practice in Colorado (license number 49624) 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 1972780062.

Contact Information

Dr Loretta Sullivan-chang, MD
4950 S Yosemite St # F2-365,
Greenwood Village, CO 80111
(650) 847-7287
Not Available

Map and Direction




Physician's Profile

Full NameDr Loretta Sullivan-chang
GenderFemale
SpecialityInternal Medicine
Location4950 S Yosemite St # F2-365, Greenwood Village, Colorado
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1972780062
  • Provider Enumeration Date: 01/30/2008
  • Last Update Date: 04/28/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7012189640
  • Enrollment ID: I20111024000134

Medical Identifiers

Medical identifiers for Dr Loretta Sullivan-chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972780062NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A100131 (California)Secondary
207R00000XInternal Medicine 49624 (Colorado)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 Loretta Sullivan-chang allows following entities to bill medicare on her behalf.
Entity NameMauricio Waintrub, M.d., P.c
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336172774
PECOS PAC ID: 0042118192
Enrollment ID: O20031226000381

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 Loretta Sullivan-chang 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 Loretta Sullivan-chang, MD
4950 S Yosemite St # F2-365,
Greenwood Village, CO 80111-1349

Ph: (650) 847-7287
Dr Loretta Sullivan-chang, MD
4950 S Yosemite St # F2-365,
Greenwood Village, CO 80111

Ph: (650) 847-7287

Reviews and Comments


Internal Medicine Doctors in Greenwood Village, CO

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Dr. Dawn Marie Jimenez Baker, MD
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Practice Location: 7100 E Belleview Ave Ste G10, Greenwood Village, CO 80111
Phone: 303-745-0000    Fax: 303-773-3675

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.