Margaret Hollister Sigman, - Medicare Allergy/immunology in Midlothian, VA

Margaret Hollister Sigman, is a medicare enrolled "Allergy & Immunology" physician in Midlothian, Virginia. She graduated from medical school in 2003 and has 21 years of diverse experience with area of expertise as Allergy/immunology. She is a member of the group practice Advanced Allergy And Asthma Of Virginia and her current practice location is 5924 Harbour Park Dr, Midlothian, Virginia. You can reach out to her office (for appointments etc.) via phone at (804) 739-9005.

Margaret Hollister Sigman is licensed to practice in Virginia (license number 0101253799) 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 1447461108.

Contact Information

Margaret Hollister Sigman,
5924 Harbour Park Dr,
Midlothian, VA 23112-2163
(804) 739-9005
(804) 739-9006

Map and Direction




Physician's Profile

Full NameMargaret Hollister Sigman
GenderFemale
SpecialityAllergy/immunology
Experience21 Years
Location5924 Harbour Park Dr, Midlothian, Virginia
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:
  • Margaret Hollister Sigman graduated from medical school in 2003
  NPI Data:
  • NPI Number: 1447461108
  • Provider Enumeration Date: 05/24/2007
  • Last Update Date: 03/10/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 7315098431
  • Enrollment ID: I20131014000986

Medical Identifiers

Medical identifiers for Margaret Hollister Sigman such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447461108NPI-NPPES
21474MedicaidLA
5910944MedicaidNC

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics 200801988 (North Carolina)Secondary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary
207K00000XAllergy & Immunology 0101253799 (Virginia)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Advanced Allergy And Asthma Of Virginia31736575662

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. Margaret Hollister Sigman allows following entities to bill medicare on her behalf.
Entity NameAdvanced Allergy And Asthma Of Virginia
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104157114
PECOS PAC ID: 3173657566
Enrollment ID: O20100820000716

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. Margaret Hollister Sigman 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
Margaret Hollister Sigman,
5924 Harbour Park Dr,
Midlothian, VA 23112-2163

Ph: (804) 739-9005
Margaret Hollister Sigman,
5924 Harbour Park Dr,
Midlothian, VA 23112-2163

Ph: (804) 739-9005

Reviews and Comments


Allergy & Immunology Doctors in Midlothian, VA

Dr. Barry K Feinstein, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 5924 Harbour Park Dr, Midlothian, VA 23112
Phone: 804-739-9005    Fax: 804-739-9006
Joseph R Vilseck, MD
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 13510 Midlothian Tpke, Midlothian, VA 23113
Phone: 804-794-9477    Fax: 804-794-1973

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.