Gregory James Harbison, MD - Medicare Orthopedic Surgery in Stockton, CA

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Gregory James Harbison, MD is a medicare enrolled "Orthopaedic Surgery" physician in Stockton, California. He graduated from medical school in 2020 and has 6 years of diverse experience with area of expertise as Orthopedic Surgery. He is a member of the group practice Ut Physicians and his current practice location is 2545 W Hammer Ln, Stockton, California. You can reach out to his office (for appointments etc.) via phone at (209) 948-1641.

Gregory James Harbison is licensed to practice in California (license number A183430) 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 1801425822.

Contact Information

Gregory James Harbison, MD
2545 W Hammer Ln,
Stockton, CA 95209-2839
(209) 948-1641
(209) 951-2256

Map and Direction




Physician's Profile

Full NameGregory James Harbison
GenderMale
SpecialityOrthopedic Surgery
Experience6 Years
Location2545 W Hammer Ln, Stockton, California
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:
  • Gregory James Harbison graduated from medical school in 2020
  NPI Data:
  • NPI Number: 1801425822
  • Provider Enumeration Date: 04/02/2020
  • Last Update Date: 09/16/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 5496128589
  • Enrollment ID: I20250728001794

Medical Identifiers

Medical identifiers for Gregory James Harbison such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801425822NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207X00000XOrthopaedic Surgery A183430 (California)Primary
207X00000XOrthopaedic Surgery V6947 (Texas)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorial Hermann Texas Medical CenterHouston, TXHospital
Memorial Hermann Katy HospitalKaty, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ut Physicians84269603601744

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. Gregory James Harbison allows following entities to bill medicare on his behalf.
Entity NameUT Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033157821
PECOS PAC ID: 8426960360
Enrollment ID: O20031107000268

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. Gregory James Harbison 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
Gregory James Harbison, MD
Po Box 255228,
Sacramento, CA 95865-5228

Ph: (800) 470-0071		Gregory James Harbison, MD
2545 W Hammer Ln,
Stockton, CA 95209-2839

Ph: (209) 948-1641

Reviews and Comments


Orthopaedic Surgery Doctors in Stockton, CA

Dhiren V. Nanavati, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 7373 West Ln, Stockton, CA 95210
Phone: 209-476-2000    
Dr. Jeffrey J Maclean, M.D., M.S.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2488 N California St, Stockton, CA 95204
Phone: 209-948-3333    Fax: 209-948-6608
Gary M Alegre, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2545 W Hammer Ln, Stockton, CA 95209
Phone: 209-948-1641    
Jerry Case Crooks, M.D.
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 2545 W Hammer Ln, Stockton, CA 95209
Phone: 209-957-7050    
Joanne M. Chao, MD
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 7373 West Ln, Stockton, CA 95210
Phone: 209-476-2000    
Kevin Kaye Mikaelian, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2545 W Hammer Ln, Stockton, CA 95209
Phone: 209-957-7050    
Gary T Murata,
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 2488 N California St, Alpine Orthopaedic Medical Group Inc, Stockton, CA 95204
Phone: 209-948-3333    Fax: 209-948-2665

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.