Dr Ryan M Callahan, MD - Medicare Cardiovascular Disease (cardiology) in Boston, MA

Dr Ryan M Callahan, MD is a medicare enrolled "Internal Medicine - Interventional Cardiology" physician in Boston, Massachusetts. He went to Drexel University College Of Medicine and graduated in 2008 and has 16 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Childrens Health Care Associates Inc and his current practice location is 300 Longwood Ave, Boston, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (617) 355-6000.

Dr Ryan M Callahan is licensed to practice in Massachusetts (license number 258267) 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 1023271749.

Contact Information

Dr Ryan M Callahan, MD
300 Longwood Ave,
Boston, MA 02115-5724
(617) 355-6000
Not Available



Physician's Profile

Full NameDr Ryan M Callahan
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience16 Years
Location300 Longwood Ave, Boston, Massachusetts
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:
  • Dr Ryan M Callahan attended and graduated from Drexel University College Of Medicine in 2008
  NPI Data:
  • NPI Number: 1023271749
  • Provider Enumeration Date: 07/02/2008
  • Last Update Date: 10/09/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 9739491655
  • Enrollment ID: I20220620000167

Medical Identifiers

Medical identifiers for Dr Ryan M Callahan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023271749NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics MT192836 (Pennsylvania)Secondary
2080P0202XPediatrics - Pediatric Cardiology 258267 (Massachusetts)Secondary
207RI0011XInternal Medicine - Interventional Cardiology 258267 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Childrens Health Care Associates Inc1355253527131

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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. Dr Ryan M Callahan allows following entities to bill medicare on his behalf.
Entity NameChildrens Health Care Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598869059
PECOS PAC ID: 1355253527
Enrollment ID: O20040216001108

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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. Dr Ryan M Callahan 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
Dr Ryan M Callahan, MD
300 Longwood Ave,
Boston, MA 02115-5724

Ph: () -
Dr Ryan M Callahan, MD
300 Longwood Ave,
Boston, MA 02115-5724

Ph: (617) 355-6000

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Internal Medicine Doctors in Boston, MA

Kaitlyn My-tu Lam, MBBS
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114
Phone: 617-724-7738    
Kui Toh Gerard Leong, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 55 Fruit Street, Massachusetts General Hospital, Boston, MA 02114
Phone: 617-726-8862    
Ruma Rajbhandari,
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 75 Francis St, Boston, MA 02115
Phone: 617-525-6841    
Alaka Ray, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114
Phone: 617-726-2066    
Meghan E Sise, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114
Phone: 617-726-2862    
Aaron Dickstein, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 800 Washington St, Box 233, Boston, MA 02111
Phone: 617-636-5883    Fax: 617-636-9292
Dr. Felicia Elizabeth Patch, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 801 Massachusetts Ave, Crosstown 2, Boston, MA 02118
Phone: 617-414-4376    Fax: 617-414-4676

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