Martha Sierra Diaz, PA-C - Medicare Physician Assistant in New Haven, CT

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Martha Sierra Diaz, PA-C is a medicare enrolled "Physician Assistant" in New Haven, Connecticut. She went to Js Weill Medical College, Cornell University and graduated in 1995 and has 29 years of diverse experience with area of expertise as Physician Assistant. She is a member of the group practice Yale University and her current practice location is 25 Park St, Np1 Smilow Cancer Hospital/ynhh, New Haven, Connecticut. You can reach out to her office (for appointments etc.) via phone at (203) 200-4176.

Martha Sierra Diaz is licensed to practice in Connecticut (license number 000762) 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 1538481882.

Contact Information

Martha Sierra Diaz, PA-C
25 Park St, Np1 Smilow Cancer Hospital/ynhh,
New Haven, CT 06519-1110
(203) 200-4176
(203) 200-5075

Map and Direction




Provider's Profile

Full NameMartha Sierra Diaz
GenderFemale
SpecialityPhysician Assistant
Experience29 Years
Location25 Park St, New Haven, Connecticut
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:
  • Martha Sierra Diaz attended and graduated from Js Weill Medical College, Cornell University in 1995
  NPI Data:
  • NPI Number: 1538481882
  • Provider Enumeration Date: 02/26/2010
  • Last Update Date: 03/31/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 5395873657
  • Enrollment ID: I20150518001370

Medical Identifiers

Medical identifiers for Martha Sierra Diaz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538481882NPI-NPPES
1447261730OtherMIBCBSM

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant 5601005665 (Michigan)Secondary
363A00000XPhysician Assistant 000762 (Connecticut)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Yale-new Haven HospitalNew haven, CTHospital
Greenwich Hospital Association -Greenwich, CTHospital
Bridgeport HospitalBridgeport, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Yale University94360617362238

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. Martha Sierra Diaz 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
Martha Sierra Diaz, PA-C
25 Park St, Np1 Smilow Cancer Hospital/ynhh,
New Haven, CT 06519-1110

Ph: (203) 200-4176		Martha Sierra Diaz, PA-C
25 Park St, Np1 Smilow Cancer Hospital/ynhh,
New Haven, CT 06519-1110

Ph: (203) 200-4176

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.