Dr Thomas L Mertz, DO, PHARMD - Medicare Internal Medicine in Pittsburgh, PA

Dr Thomas L Mertz, DO, PHARMD is a medicare enrolled "Allergy & Immunology" physician in Pittsburgh, Pennsylvania. He went to Lake Erie College Of Osteopathic Medicine, Erie and graduated in 2004 and has 20 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Allergy And Asthma Associates Of Pittsburgh and his current practice location is 2585 Freeport Rd Ste 210, Pittsburgh, Pennsylvania. You can reach out to his office (for appointments etc.) via phone at (412) 828-3800.

Dr Thomas L Mertz is licensed to practice in Pennsylvania (license number OS015695) 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 1942495825.

Contact Information

Dr Thomas L Mertz, DO, PHARMD
2585 Freeport Rd Ste 210,
Pittsburgh, PA 15238-1426
(412) 828-3800
(412) 828-8561

Map and Direction




Physician's Profile

Full NameDr Thomas L Mertz
GenderMale
SpecialityInternal Medicine
Experience20 Years
Location2585 Freeport Rd Ste 210, Pittsburgh, Pennsylvania
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 Thomas L Mertz attended and graduated from Lake Erie College Of Osteopathic Medicine, Erie in 2004
  NPI Data:
  • NPI Number: 1942495825
  • Provider Enumeration Date: 09/13/2007
  • Last Update Date: 06/05/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 8426121724
  • Enrollment ID: I20120830000324

Medical Identifiers

Medical identifiers for Dr Thomas L Mertz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942495825NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 046528 (Connecticut)Secondary
208000000XPediatrics 046528 (Connecticut)Secondary
207K00000XAllergy & Immunology OS015695 (Pennsylvania)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Upmc St MargaretPittsburgh, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Allergy And Asthma Associates Of Pittsburgh40826526802

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 Thomas L Mertz allows following entities to bill medicare on his behalf.
Entity NameAllergy & Asthma Associates Of Pittsburgh
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619972940
PECOS PAC ID: 4082652680
Enrollment ID: O20050425000078

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 Thomas L Mertz 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 Thomas L Mertz, DO, PHARMD
2585 Freeport Rd Ste 210,
Pittsburgh, PA 15238-1426

Ph: (412) 828-3800
Dr Thomas L Mertz, DO, PHARMD
2585 Freeport Rd Ste 210,
Pittsburgh, PA 15238-1426

Ph: (412) 828-3800

Reviews and Comments


Allergy & Immunology Doctors in Pittsburgh, PA

Michael J Palumbo, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 180 Fort Couch Rd, Suite 375, Pittsburgh, PA 15241
Phone: 412-833-8811    Fax: 412-833-7011
Merritt Fajt,
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 3459 5th Ave, Upmc Montefiore, Nw628; Asthma Institute, Pittsburgh, PA 15213
Phone: 412-692-2139    
Dr. Richard L. Green, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 2585 Freeport Rd Ste 210, Pittsburgh, PA 15238
Phone: 412-828-3800    Fax: 412-828-8561
Dr. Andrew G. Vayonis, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 2585 Freeport Rd Ste 210, Pittsburgh, PA 15238
Phone: 412-828-3800    Fax: 412-828-8561
Ellen Lu, MD
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 490 E North Ave Ste 207, Pittsburgh, PA 15212
Phone: 412-359-6640    Fax: 412-359-4148
Morgan F Flaherty, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 51 Rustic Ridge Dr, Pittsburgh, PA 15239
Phone: 412-406-7216    Fax: 412-406-7780
Mosopefoluwa Lanlokun, M.D.
Allergy & Immunology
Medicare: Medicare Enrolled
Practice Location: 4401 Penn Ave, Pittsburgh, PA 15224
Phone: 412-692-5103    

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.