Gregory J Wiener, MD - Medicare Gastroenterology in Chula Vista, CA

Gregory J Wiener, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Chula Vista, California. He graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Gregory J Wiener M D Professional Corporation and his current practice location is 353 Church Ave # A, Chula Vista, California. You can reach out to his office (for appointments etc.) via phone at (619) 585-8883.

Gregory J Wiener is licensed to practice in California (license number A41749) 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 1811099534.

Contact Information

Gregory J Wiener, MD
353 Church Ave # A,
Chula Vista, CA 91910-3906
(619) 585-8883
(619) 585-8892

Map and Direction




Physician's Profile

Full NameGregory J Wiener
GenderMale
SpecialityGastroenterology
Experience42 Years
Location353 Church Ave # A, Chula Vista, California
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:
  • Gregory J Wiener graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1811099534
  • Provider Enumeration Date: 09/02/2006
  • Last Update Date: 08/13/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 9032126230
  • Enrollment ID: I20080407000654

Medical Identifiers

Medical identifiers for Gregory J Wiener such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811099534NPI-NPPES
00A417490MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology A41749 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Scripps Mercy HospitalSan diego, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Gregory J Wiener M D Professional Corporation69019835192

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. Gregory J Wiener allows following entities to bill medicare on his behalf.
Entity NameScripps Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275899072
PECOS PAC ID: 9234033853
Enrollment ID: O20031124000822
Entity NameEmergency And Acute Care Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437103942
PECOS PAC ID: 9537108279
Enrollment ID: O20050502000734
Entity NameGregory J Wiener M D Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376728287
PECOS PAC ID: 6901983519
Enrollment ID: O20080407000661
Entity NameGenesis Healthcare Partners Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548567498
PECOS PAC ID: 2163606807
Enrollment ID: O20110405000433

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. Gregory J Wiener 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
Gregory J Wiener, MD
353a Church Ave,
Chula Vista, CA 91910-3906

Ph: (619) 585-8883
Gregory J Wiener, MD
353 Church Ave # A,
Chula Vista, CA 91910-3906

Ph: (619) 585-8883

Reviews and Comments


Internal Medicine Doctors in Chula Vista, CA

Dr. Perry V Montoya, M.D
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Practice Location: 525 3rd Ave, Chula Vista, CA 91910
Phone: 858-499-2600    Fax: 619-585-4353
John S Videen, MD
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Practice Location: 752 Medical Center Ct, Suite 302, Chula Vista, CA 91911
Phone: 619-421-3361    Fax: 619-656-8936
Daniel Cepin, M.D.
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Practice Location: 890 Eastlake Pkwy, Suite 205, Chula Vista, CA 91914
Phone: 619-482-0300    Fax: 619-482-0959
Kenneth Burton Johnson, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 769 Medical Center Ct, Suite 202, Chula Vista, CA 91911
Phone: 619-482-8430    Fax: 619-482-8005
Dr. Michael Sonbaty, M.D.
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Practice Location: 1400 E Palomar St, Chula Vista, CA 91913
Phone: 858-499-2616    
Sara Khandan, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 835 Third Ave Ste A, Chula Vista, CA 91911
Phone: 619-425-7755    Fax: 619-425-2138
Alejandro G Hinojosa-valencia, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 629 Third Ave Ste A, Chula Vista, CA 91910
Phone: 619-422-6158    Fax: 619-422-2019

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.