Gregory Reiser, MD - Medicare Internal Medicine in Oshkosh, WI

Gregory Reiser, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Oshkosh, Wisconsin. His current practice location is 855 N Westhaven Dr, Oshkosh, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (920) 303-8700.

Gregory Reiser is licensed to practice in Wisconsin (license number 27306-020) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1245250323.

Contact Information

Gregory Reiser, MD
855 N Westhaven Dr,
Oshkosh, WI 54904-7668
(920) 303-8700
Not Available

Map and Direction




Physician's Profile

Full NameGregory Reiser
GenderMale
SpecialityInternal Medicine - Cardiovascular Disease
Location855 N Westhaven Dr, Oshkosh, Wisconsin
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1245250323
  • Provider Enumeration Date: 07/20/2006
  • Last Update Date: 10/16/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 1355318700
  • Enrollment ID: I20040914001239

Medical Identifiers

Medical identifiers for Gregory Reiser such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1245250323NPI-NPPES
30784200MedicaidWI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 27306-020 (Wisconsin)Secondary
207RC0000XInternal Medicine - Cardiovascular Disease 27306-020 (Wisconsin)Primary
207UN0901XNuclear Medicine - Nuclear Cardiology 27306-020 (Wisconsin)Secondary

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 Reiser 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 Reiser, MD
Po Box 735044,
Chicago, IL 60673-5044

Ph: (920) 303-8700
Gregory Reiser, MD
855 N Westhaven Dr,
Oshkosh, WI 54904-7668

Ph: (920) 303-8700

Reviews and Comments


Internal Medicine Doctors in Oshkosh, WI

Zahid N Dar, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 855 N Westhaven Dr, Oshkosh, WI 54904
Phone: 920-303-8700    
Dr. Brian A.w. Temple, MD
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 855 N Westhaven Dr, Oshkosh, WI 54904
Phone: 920-303-8700    Fax: 920-303-8992
Anita I Gheller-rigoni, DO
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 855 N Westhaven Dr, Oshkosh, WI 54904
Phone: 920-456-5900    Fax: 920-456-5901
Dr. Benjamin Joseph Heinzen, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1855 S Koeller St, Oshkosh, WI 54902
Phone: 920-223-7100    
Mamoun B Al-nouri, MD
Cardiovascular Disease
Medicare: Not Enrolled in Medicare
Practice Location: 2700 W 9th Ave, Ste 106, Oshkosh, WI 54904
Phone: 920-236-1755    
Brianna England,
Cardiovascular Disease
Medicare: Medicare Enrolled
Practice Location: 414 Doctors Ct, Oshkosh, WI 54901
Phone: 920-303-8700    
Robert D. Geck, M.D.
Cardiovascular Disease
Medicare: Accepting Medicare Assignments
Practice Location: 855 N Westhaven Dr, Oshkosh, WI 54904
Phone: 920-303-8700    

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.