Dr Hari H Diwakaran, MD - Medicare Gastroenterology in Saint Charles, MO

Dr Hari H Diwakaran, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Saint Charles, Missouri. He graduated from medical school in 1987 and has 37 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Ssm Medical Group Inc and his current practice location is 400 1st Capitol Dr Ste 201, Saint Charles, Missouri. You can reach out to his office (for appointments etc.) via phone at (636) 669-2332.

Dr Hari H Diwakaran is licensed to practice in Missouri (license number 108324) 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 1285694703.

Contact Information

Dr Hari H Diwakaran, MD
400 1st Capitol Dr Ste 201,
Saint Charles, MO 63301-2882
(636) 669-2332
(636) 669-2401

Map and Direction




Physician's Profile

Full NameDr Hari H Diwakaran
GenderMale
SpecialityGastroenterology
Experience37 Years
Location400 1st Capitol Dr Ste 201, Saint Charles, Missouri
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:
  • Dr Hari H Diwakaran graduated from medical school in 1987
  NPI Data:
  • NPI Number: 1285694703
  • Provider Enumeration Date: 03/27/2006
  • Last Update Date: 10/21/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 8426182890
  • Enrollment ID: I20100820000450

Medical Identifiers

Medical identifiers for Dr Hari H Diwakaran such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285694703NPI-NPPES
205924400MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 108324 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ssm St Joseph Health CenterSaint charles, MOHospital
Ssm St Joseph Hospital WestLake saint louis, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ssm Medical Group Inc6608776299496

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 Hari H Diwakaran allows following entities to bill medicare on his behalf.
Entity NameSsm Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700966207
PECOS PAC ID: 6608776299
Enrollment ID: O20040729001034

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 Hari H Diwakaran 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 Hari H Diwakaran, MD
Po Box 955534,
Saint Louis, MO 63195-2551

Ph: () -
Dr Hari H Diwakaran, MD
400 1st Capitol Dr Ste 201,
Saint Charles, MO 63301-2882

Ph: (636) 669-2332

Reviews and Comments


Internal Medicine Doctors in Saint Charles, MO

Lawrence Stephen Tierney, M.D.
Gastroenterology
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.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 300 1st Capitol Dr, Saint Charles, MO 63301
Phone: 636-647-5000    Fax: 636-947-5090
Guangchen Zou, M.D.
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 1820 Zumbehl Rd Ste 120, Saint Charles, MO 63303
Phone: 314-801-5350    Fax: 314-801-5323
Dr. Stephen M Comens, M.D.
Gastroenterology
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
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 330 1st Capitol Dr Ste 260, Saint Charles, MO 63301
Phone: 636-925-0900    
Keith Wickenhauser, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 711 Veterans Memorial Pkwy Ste 300, Saint Charles, MO 63303
Phone: 636-669-2350    
Jerome E Thurman, M.D.,F.A.C.E.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 711 Veterans Memorial Pkwy Ste 200, Saint Charles, MO 63303
Phone: 636-669-2219    Fax: 636-669-2380

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.