Tejaswini R Nayak, MD - Medicare Internal Medicine in Saint Charles, MO

Tejaswini R Nayak, MD is a medicare enrolled "Internal Medicine" physician in Saint Charles, Missouri. She graduated from medical school in 1997 and has 27 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Mercy Clinic East Communities and her current practice location is 1820 Zumbehl Rd, Suite 120-a, Saint Charles, Missouri. You can reach out to her office (for appointments etc.) via phone at (636) 928-1237.

Tejaswini R Nayak is licensed to practice in Missouri (license number 2002015974) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1609841303.

Contact Information

Tejaswini R Nayak, MD
1820 Zumbehl Rd, Suite 120-a,
Saint Charles, MO 63303-2761
(636) 928-1237
(636) 928-0397

Map and Direction




Physician's Profile

Full NameTejaswini R Nayak
GenderFemale
SpecialityInternal Medicine
Experience27 Years
Location1820 Zumbehl Rd, Saint Charles, Missouri
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Tejaswini R Nayak graduated from medical school in 1997
  NPI Data:
  • NPI Number: 1609841303
  • Provider Enumeration Date: 02/17/2006
  • Last Update Date: 09/05/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 4587657200
  • Enrollment ID: I20040407000531

Medical Identifiers

Medical identifiers for Tejaswini R Nayak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609841303NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 2002015974 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Hospital St LouisSaint louis, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Clinic East Communities7214827922491

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. Tejaswini R Nayak allows following entities to bill medicare on her behalf.
Entity NameMercy Clinic East Communities
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851335228
PECOS PAC ID: 7214827922
Enrollment ID: O20070521000006

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. Tejaswini R Nayak 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
Tejaswini R Nayak, MD
1820 Zumbehl Rd, Suite 120-a,
Saint Charles, MO 63303-2761

Ph: (636) 928-1237
Tejaswini R Nayak, MD
1820 Zumbehl Rd, Suite 120-a,
Saint Charles, MO 63303-2761

Ph: (636) 928-1237

Reviews and Comments


Internal Medicine Doctors in Saint Charles, MO

Lawrence Stephen Tierney, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 1st Capitol Dr Ste 201, Saint Charles, MO 63301
Phone: 636-669-2332    
Syed A Khalid, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 1st Capitol Dr, Saint Charles, MO 63301
Phone: 636-647-5000    Fax: 636-947-5090
Dr. Stephen M Comens, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1551 Wall St, 4th Floor, Saint Charles, MO 63303
Phone: 636-669-2220    Fax: 636-669-2401
Dr. Shephali Himanshu Wulff, D.O
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 330 1st Capitol Dr Ste 260, Saint Charles, MO 63301
Phone: 636-925-0900    
Jerome E Thurman, M.D.,F.A.C.E.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 711 Veterans Memorial Pkwy Ste 200, Saint Charles, MO 63303
Phone: 636-669-2219    Fax: 636-669-2380
Michael O Johnson, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 1st Capitol Dr, Saint Charles, MO 63301
Phone: 636-947-5000    
Dr. Hari H Diwakaran, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 1st Capitol Dr Ste 201, Saint Charles, MO 63301
Phone: 636-669-2332    Fax: 636-669-2401

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.