Dr Walter Matthew Ryan Iii, DO - Medicare Allergy/immunology in Nashua, NH

Dr Walter Matthew Ryan Iii, DO is a medicare enrolled "Internal Medicine - Allergy & Immunology" physician in Nashua, New Hampshire. He graduated from medical school in 1993 and has 31 years of diverse experience with area of expertise as Allergy/immunology. He is a member of the group practice Mary Hitchcock Memorial Hospital and his current practice location is 2300 Southwood Dr, Nashua, New Hampshire. You can reach out to his office (for appointments etc.) via phone at (603) 577-4000.

Dr Walter Matthew Ryan Iii is licensed to practice in New Hampshire (license number 24463) 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 1073503843.

Contact Information

Dr Walter Matthew Ryan Iii, DO
2300 Southwood Dr,
Nashua, NH 03063-1818
(603) 577-4000
Not Available



Physician's Profile

Full NameDr Walter Matthew Ryan Iii
GenderMale
SpecialityAllergy/immunology
Experience31 Years
Location2300 Southwood Dr, Nashua, New Hampshire
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 Walter Matthew Ryan Iii graduated from medical school in 1993
  NPI Data:
  • NPI Number: 1073503843
  • Provider Enumeration Date: 10/24/2005
  • Last Update Date: 08/04/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8729177043
  • Enrollment ID: I20230828000909

Medical Identifiers

Medical identifiers for Dr Walter Matthew Ryan Iii such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1073503843NPI-NPPES
279624400MedicaidFL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207K00000XAllergy & Immunology OS10177 (Florida)Secondary
207RA0201XInternal Medicine - Allergy & Immunology 24463 (New Hampshire)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mary Hitchcock Memorial HospitalLebanon, NHHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mary Hitchcock Memorial Hospital4486561164964

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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 Walter Matthew Ryan Iii allows following entities to bill medicare on his behalf.
Entity NameMary Hitchcock Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023092053
PECOS PAC ID: 4486561164
Enrollment ID: O20031126000258

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Entity NameDartmouth-hitchcock Clinic
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548210198
PECOS PAC ID: 4183537509
Enrollment ID: O20040809000442

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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 Walter Matthew Ryan Iii 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 Walter Matthew Ryan Iii, DO
Po Box 810,
Hanover, NH 03755-0810

Ph: (603) 308-1453
Dr Walter Matthew Ryan Iii, DO
2300 Southwood Dr,
Nashua, NH 03063-1818

Ph: (603) 577-4000

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Internal Medicine Doctors in Nashua, NH

Christopher Michael Riccio, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17 Prospect St, Nashua, NH 03060
Phone: 603-594-6337    Fax: 603-594-6330
Dr. Mark Liebling,
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 166 Kinsley St Ste 301, Nashua, NH 03060
Phone: 603-883-5673    Fax: 603-689-1343
Dr. Chengta Richard Dai, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 168 Kinsley Street, Suite 20, Nashua, NH 03060
Phone: 603-578-9363    Fax: 603-578-9539
Dr. William Stephan, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 168 Kinsley St, Nashua, NH 03060
Phone: 603-889-4131    
Ihab M Ziada, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 173 Daniel Webster Hwy, Nashua, NH 03060
Phone: 603-891-4500    
Ajay K Sharma, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8 Prospect St, Nashua, NH 03060
Phone: 603-577-2039    Fax: 603-882-5656
Dr. Gianfranco Tulliano, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8 Prospect St, Nashua, NH 03060
Phone: 603-577-2045    Fax: 603-577-5644

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