Abigail Nisan, MD - Medicare Internal Medicine in San Angelo, TX

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Abigail Nisan, MD is a medicare enrolled "Internal Medicine" physician in San Angelo, Texas. She graduated from medical school in 2008 and has 16 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Shannon Clinic and her current practice location is 120 E Harris Ave, San Angelo, Texas. You can reach out to her office (for appointments etc.) via phone at (325) 653-6741.

Abigail Nisan is licensed to practice in Texas (license number P1676) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1336445956.

Contact Information

Abigail Nisan, MD
120 E Harris Ave,
San Angelo, TX 76903-5904
(325) 653-6741
(325) 481-2166

Map and Direction




Physician's Profile

Full NameAbigail Nisan
GenderFemale
SpecialityInternal Medicine
Experience16 Years
Location120 E Harris Ave, San Angelo, Texas
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Abigail Nisan graduated from medical school in 2008
  NPI Data:
  • NPI Number: 1336445956
  • Provider Enumeration Date: 01/28/2011
  • Last Update Date: 01/22/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 9234301698
  • Enrollment ID: I20120322000241

Medical Identifiers

Medical identifiers for Abigail Nisan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336445956NPI-NPPES
8EW479OtherTXBCBS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine P1676 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Shannon Medical CenterSan angelo, TXHospital
Ballinger Memorial HospitalBallinger, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Shannon Clinic0840103727411

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. Abigail Nisan allows following entities to bill medicare on her behalf.
Entity NameShannon Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770587149
PECOS PAC ID: 0840103727
Enrollment ID: O20031222000702
Entity NameHendrick Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861498735
PECOS PAC ID: 1658281993
Enrollment ID: O20040803001165
Entity NameApogee Medical Group Texas Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1558318071
PECOS PAC ID: 9436151792
Enrollment ID: O20070215000533
Entity NameQuantum Emergency Physicians Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215010079
PECOS PAC ID: 1153414503
Enrollment ID: O20070830000804
Entity NameQuantum Hospital Medicine Services Of Texas, Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568613024
PECOS PAC ID: 9830253939
Enrollment ID: O20090205000036
Entity NameSound Inpatient Physicians Of Texas I, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831424563
PECOS PAC ID: 8729133640
Enrollment ID: O20090828000300
Entity NameHospitalist Medicine Physicians Of Texas Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629307095
PECOS PAC ID: 3476688318
Enrollment ID: O20100317001021

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. Abigail Nisan 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
Abigail Nisan, MD
Po Box 22000,
San Angelo, TX 76902-7200

Ph: (325) 658-1511		Abigail Nisan, MD
120 E Harris Ave,
San Angelo, TX 76903-5904

Ph: (325) 653-6741

Reviews and Comments


Internal Medicine Doctors in San Angelo, TX

Dr. Jesse L Jurado, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 3501 Executive Dr, San Angelo, TX 76904
Phone: 325-949-5081    Fax: 325-224-4284
Dennis Durham, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3501 Knickerbocker Rd, San Angelo, TX 76904
Phone: 325-947-6063    Fax: 325-947-6189
Charles M Jones, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 120 E Beauregard Ave, San Angelo, TX 76903
Phone: 325-481-2198    Fax: 325-659-0180
David R Delaplane, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3350 Executive Dr Ste 108, San Angelo, TX 76904
Phone: 325-245-4500    Fax: 325-245-4040
Dr. Kai M Sun, D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3350 Executive Dr, Suite 100, San Angelo, TX 76904
Phone: 325-245-4501    
Javier Leoncio Baez Presser, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 120 E Harris Ave, San Angelo, TX 76903
Phone: 325-481-6410    
Dr. Ekemini Benedict Usoro, DO
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 120 E Harris Ave, San Angelo, TX 76903
Phone: 325-747-6741    

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.