Dr David B Greenstein, MD - Medicare Gastroenterology in Atlanta, GA

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Dr David B Greenstein, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Atlanta, Georgia. He went to Johns Hopkins University School Of Medicine and graduated in 1988 and has 38 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Newco Gi Llc and his current practice location is 20 Glenlake Pkwy, Department Of Gastroenterology, Atlanta, Georgia. You can reach out to his office (for appointments etc.) via phone at (770) 677-6247.

Dr David B Greenstein is licensed to practice in Georgia (license number 032574) 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 1235246281.

Contact Information

Dr David B Greenstein, MD
20 Glenlake Pkwy, Department Of Gastroenterology,
Atlanta, GA 30328-3473
(770) 677-6247
(770) 677-7343

Map and Direction




Physician's Profile

Full NameDr David B Greenstein
GenderMale
SpecialityGastroenterology
Experience38 Years
Location20 Glenlake Pkwy, Atlanta, Georgia
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 David B Greenstein attended and graduated from Johns Hopkins University School Of Medicine in 1988
  NPI Data:
  • NPI Number: 1235246281
  • Provider Enumeration Date: 08/24/2006
  • Last Update Date: 03/27/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 0941345854
  • Enrollment ID: I20100303000617

Medical Identifiers

Medical identifiers for Dr David B Greenstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1235246281NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 032574 (Georgia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Newco Gi Llc62041365837

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 David B Greenstein allows following entities to bill medicare on his behalf.
Entity NameThe Southeast Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245266956
PECOS PAC ID: 6204829013
Enrollment ID: O20040407000370
Entity NameEmory Specialty Associates, LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407864168
PECOS PAC ID: 3476559782
Enrollment ID: O20061010000447
Entity NameNewco Gi LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073999066
PECOS PAC ID: 6204136583
Enrollment ID: O20151119000230
Entity NameGi North Endoscopy.llc
Entity TypePart B Supplier - Ambulatory Surgical Center
Entity IdentifiersNPI Number: 1326555491
PECOS PAC ID: 5597098871
Enrollment ID: O20190603000232

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 David B Greenstein 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 David B Greenstein, MD
4975 Riverlake Dr,
Peachtree Corners, GA 30097-2326

Ph: (404) 314-1213		Dr David B Greenstein, MD
20 Glenlake Pkwy, Department Of Gastroenterology,
Atlanta, GA 30328-3473

Ph: (770) 677-6247

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).

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.