Priyanka Tiwari, MD - Medicare Gastroenterology in Lake St Louis, MO

Priyanka Tiwari, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Lake St Louis, Missouri. She graduated from medical school in 2002 and has 22 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Mercy Clinic Gastroenterology Llc and her current practice location is 200 Brevco Plz Ste 208, Lake St Louis, Missouri. You can reach out to her office (for appointments etc.) via phone at (636) 561-9020.

Priyanka Tiwari is licensed to practice in Missouri (license number 2019033235) 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 1295837441.

Contact Information

Priyanka Tiwari, MD
200 Brevco Plz Ste 208,
Lake St Louis, MO 63367-2950
(636) 561-9020
Not Available

Map and Direction




Physician's Profile

Full NamePriyanka Tiwari
GenderFemale
SpecialityGastroenterology
Experience22 Years
Location200 Brevco Plz Ste 208, Lake St Louis, 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:
  • Priyanka Tiwari graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1295837441
  • Provider Enumeration Date: 09/01/2006
  • Last Update Date: 07/19/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2769633668
  • Enrollment ID: I20200124000072

Medical Identifiers

Medical identifiers for Priyanka Tiwari such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1295837441NPI-NPPES
17330MedicaidND

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 2019033235 (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 Gastroenterology Llc862812179551

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. Priyanka Tiwari allows following entities to bill medicare on her behalf.
Entity NameFairview Heights Medical Group Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679503668
PECOS PAC ID: 6800784083
Enrollment ID: O20060302000596
Entity NameMercy Clinic Gastroenterology Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528295334
PECOS PAC ID: 8628121795
Enrollment ID: O20090806000762

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. Priyanka Tiwari 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
Priyanka Tiwari, MD
200 Brevco Plz Ste 208,
Lake St Louis, MO 63367-2950

Ph: (636) 561-9020
Priyanka Tiwari, MD
200 Brevco Plz Ste 208,
Lake St Louis, MO 63367-2950

Ph: (636) 561-9020

Reviews and Comments


Internal Medicine Doctors in Lake St Louis, MO

John David Wilkes, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 400 Medical Plz, Suite 100, Lake St Louis, MO 63367
Phone: 636-639-8600    Fax: 636-639-8676
Michael J Zerega, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 200 Brevco Plz, Suite 208, Lake St Louis, MO 63367
Phone: 636-561-9020    Fax: 636-561-6208
Dr. Piotr T Dyk, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2 Harbor Bend Ct Ste 227, Lake St Louis, MO 63367
Phone: 636-443-2440    Fax: 636-443-2486
Melissa Amy Grizzle, FNP-BC
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 107 Brevco Plz, Lake St Louis, MO 63367
Phone: 636-561-8100    Fax: 636-561-3396
Dr. Paul Barto Vatterott, M.D.
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 107 Brevco Plz, Lake St Louis, MO 63367
Phone: 636-561-8100    Fax: 636-561-3396
Umesh C. Inampudi, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Medical Plz, Lake St Louis, MO 63367
Phone: 314-317-0600    Fax: 314-317-0606

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.