John W Gnann Jr, MD - Medicare Internal Medicine in Charleston, SC

John W Gnann Jr, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Charleston, South Carolina. He went to Duke University School Of Medicine and graduated in 1978 and has 46 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice University Medical Associates and his current practice location is 171 Ashley Ave, Charleston, South Carolina. You can reach out to his office (for appointments etc.) via phone at (843) 792-1414.

John W Gnann Jr is licensed to practice in South Carolina (license number AL35447) 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 1467498659.

Contact Information

John W Gnann Jr, MD
171 Ashley Ave,
Charleston, SC 29425-8908
(843) 792-1414
Not Available

Map and Direction




Physician's Profile

Full NameJohn W Gnann Jr
GenderMale
SpecialityInternal Medicine
Experience46 Years
Location171 Ashley Ave, Charleston, South Carolina
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:
  • John W Gnann Jr attended and graduated from Duke University School Of Medicine in 1978
  NPI Data:
  • NPI Number: 1467498659
  • Provider Enumeration Date: 06/22/2006
  • Last Update Date: 10/22/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 0143415786
  • Enrollment ID: I20130327000529

Medical Identifiers

Medical identifiers for John W Gnann Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467498659NPI-NPPES
C73388OtherALVIVA
051510652OtherALBLUE CROSS
110028646OtherALRAILROAD MEDICARE
9928OtherALHEALTHSPRING OF ALABAMA
000080315OtherALBLUE CROSS
000080315MedicaidAL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 08890 (Alabama)Secondary
207RI0200XInternal Medicine - Infectious Disease AL35447 (South Carolina)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Medical Associates63057585741311

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. John W Gnann Jr allows following entities to bill medicare on his behalf.
Entity NameUniversity Medical Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043241110
PECOS PAC ID: 6305758574
Enrollment ID: O20031105000291
Entity NameGeorgetown Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982604021
PECOS PAC ID: 8224942123
Enrollment ID: O20031114000600
Entity NameWaccamaw Community Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972503910
PECOS PAC ID: 9133036932
Enrollment ID: O20031126000386

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. John W Gnann Jr 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
John W Gnann Jr, MD
Po Box 751461,
Charlotte, NC 28275-1461

Ph: (843) 792-6200
John W Gnann Jr, MD
171 Ashley Ave,
Charleston, SC 29425-8908

Ph: (843) 792-1414

Reviews and Comments


Internal Medicine Doctors in Charleston, SC

Dr. Jeffrey Peter Yourshaw, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 169 Ashley Ave, Room 202 Main Hospital Msc 333, Charleston, SC 29425
Phone: 843-876-4807    Fax: 843-876-4809
Jennifer Lee Martin, D.O.
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 171 Ashley Ave, Charleston, SC 29425
Phone: 843-792-1414    
Nikko Rowe Asuncion Tabliago, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 169 Ashley Ave Rm 202, Charleston, SC 29425
Phone: 843-792-2575    
Moses K Asempah, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 169 Ashley Avenue, Room 202 Main Hospital Msc333, Charleston, SC 29425
Phone: 717-491-3745    
Paige Nicole Laverick, PA-C
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 171 Ashley Ave, Charleston, SC 29425
Phone: 843-792-1414    
Amit Agrawal, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 171 Ashley Ave, Charleston, SC 29425
Phone: 843-792-1414    
Yevgeniy Gelfand, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 67 President St, Charleston, SC 29425
Phone: 843-792-0111    

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).

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