Dr Gregory Carter Williamson, MD - Medicare Anesthesiology in Pittsburgh, PA

Dr Gregory Carter Williamson, MD is a medicare enrolled "Anesthesiology" physician in Pittsburgh, Pennsylvania. He went to Pennsylvania State University College Of Medicine and graduated in 2019 and has 7 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice University Of Pittsburgh Physicians and his current practice location is 4401 Penn Ave Ste 5643, Pittsburgh, Pennsylvania. You can reach out to his office (for appointments etc.) via phone at (412) 692-5261.

Dr Gregory Carter Williamson is licensed to practice in Pennsylvania (license number MD484869) 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 1144780040.

Contact Information

Dr Gregory Carter Williamson, MD
4401 Penn Ave Ste 5643,
Pittsburgh, PA 15224-1334
(412) 692-5261
Not Available

Map and Direction




Physician's Profile

Full NameDr Gregory Carter Williamson
GenderMale
SpecialityAnesthesiology
Experience7 Years
Location4401 Penn Ave Ste 5643, 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 Gregory Carter Williamson attended and graduated from Pennsylvania State University College Of Medicine in 2019
  NPI Data:
  • NPI Number: 1144780040
  • Provider Enumeration Date: 03/25/2019
  • Last Update Date: 04/08/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 9032444955
  • Enrollment ID: I20251104004760

Medical Identifiers

Medical identifiers for Dr Gregory Carter Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144780040NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology MD484869 (Pennsylvania)Primary
208000000XPediatrics MD484869 (Pennsylvania)Secondary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Pittsburgh Physicians87299902394166

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 Gregory Carter Williamson allows following entities to bill medicare on his behalf.
Entity NameUniversity of Pittsburgh Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619935004
PECOS PAC ID: 8729990239
Enrollment ID: O20040308000883

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 Gregory Carter Williamson 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 Gregory Carter Williamson, MD
4401 Penn Ave,
Pittsburgh, PA 15224-1334

Ph: Not Available
Dr Gregory Carter Williamson, MD
4401 Penn Ave Ste 5643,
Pittsburgh, PA 15224-1334

Ph: (412) 692-5261

Reviews and Comments


Anesthesiology Doctors in Pittsburgh, PA

Dr. Eric Lowell Davidson, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 3550 Terrace Street, Dept. Of Ccm, University Of Pittsburgh, Pittsburgh, PA 15261
Phone: 412-647-3136    
Michelle Masnovi,
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Medicare: Accepting Medicare Assignments
Practice Location: Upmc Department Of Anesthesiology, 3471 Fifth Avenue Kaufmann Bldg Suite 402, Pittsburgh, PA 15213
Phone: 412-692-4572    
Igor Semenov,
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Practice Location: 3705 5th Ave, One Children's Hospital Drive, Pittsburgh, PA 15213
Phone: 412-692-5260    
Susan Mcelroy,
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Medicare: Accepting Medicare Assignments
Practice Location: 4727 Friendship Ave, #240, Pittsburgh, PA 15224
Phone: 412-235-5870    
Joseph Talarico,
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Medicare: Accepting Medicare Assignments
Practice Location: 200 Lothrop St, Pittsburgh, PA 15213
Phone: 412-647-3260    
Dr. Delphine Walker, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 1400 Locust St, Pittsburgh, PA 15219
Phone: 412-232-7199    
Rajani Chuensumran, MD
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: 9100 Babcock Blvd, Pittsburgh, PA 15237
Phone: 412-367-6700    

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).

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