Charles Calais, DO - Medicare Allergy/immunology in San Antonio, TX

Charles Calais, DO is a medicare enrolled "Internal Medicine - Allergy & Immunology" physician in San Antonio, Texas. He went to Philadelphia College Of Osteopathic Medicine and graduated in 2010 and has 14 years of diverse experience with area of expertise as Allergy/immunology. His current practice location is 1219 Mccullough Ave, San Antonio, Texas. You can reach out to his office (for appointments etc.) via phone at (210) 226-3500.

Charles Calais is licensed to practice in Virginia (license number 0102203064) 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 1831416197.

Contact Information

Charles Calais, DO
1219 Mccullough Ave,
San Antonio, TX 78212-4811
(210) 226-3500
(210) 226-3638

Map and Direction




Physician's Profile

Full NameCharles Calais
GenderMale
SpecialityAllergy/immunology
Experience14 Years
Location1219 Mccullough Ave, San Antonio, Texas
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:
  • Charles Calais attended and graduated from Philadelphia College Of Osteopathic Medicine in 2010
  NPI Data:
  • NPI Number: 1831416197
  • Provider Enumeration Date: 04/27/2010
  • Last Update Date: 11/05/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8325469166
  • Enrollment ID: I20200706001672

Medical Identifiers

Medical identifiers for Charles Calais such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831416197NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RA0201XInternal Medicine - Allergy & Immunology R8534 (Texas)Secondary
207RA0201XInternal Medicine - Allergy & Immunology 0102203064 (Virginia)Primary

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. Charles Calais allows following entities to bill medicare on his behalf.
Entity NameAll-american Allergy Asthma & Immunology Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356966287
PECOS PAC ID: 2769805001
Enrollment ID: O20200706001533

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. Charles Calais 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
Charles Calais, DO
1219 Mccullough Ave,
San Antonio, TX 78212-4811

Ph: (210) 226-3500
Charles Calais, DO
1219 Mccullough Ave,
San Antonio, TX 78212-4811

Ph: (210) 226-3500

Reviews and Comments


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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.