Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GREGORY JAMES HARBISON MD
NPI 1801425822
Orthopaedic Surgery in Stockton, CA

Q: What is Gregory Harbison's NPI number?

The NPI number for Gregory Harbison is 1801425822. It was assigned to this individual provider in the NPPES registry on April 2, 2020.

Q: What is Gregory Harbison's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Harbison was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 02, 2020PECOS Enrolled

2545 W HAMMER LN, STOCKTON, CA 95209(209) 948-1641(209) 951-2256 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 16, 2026, Jul 10, 2025, Apr 19, 2020 and 1 more (4 updates tracked since 2020).

On this page

About Gregory James Harbison Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY JAMES HARBISON MD (NPI 1801425822) is an individual orthopaedic surgery provider in Stockton, California, licensed in California (A183430) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann - Texas Medical Center, and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1801425822

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameGREGORY JAMES HARBISONCredential: MD

Location Address2545 W HAMMER LNStockton, CA 95209-2839

Mailing AddressPo Box 255228Sacramento, CA 95865-5228 · (800) 470-0071 · Fax (916) 854-6769

Phone(209) 948-1641

Fax(209) 951-2256

Sole ProprietorNo

Medical School CMSOtherGraduated 2020

Enumeration DateApril 2, 2020

Last NPPES UpdateSeptember 16, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 16, 2026

✔ NPI 1801425822 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in CA · A183430✔ Licensed in TX · V6947

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

2545 W HAMMER LN, Stockton, CA 95209

Open in Google Maps ↗

Secondary Practice Location 1

Location 16400 Fannin St Ste 1700Houston, TX 77030-1526 · Phone (713) 486-5527

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory James Harbison Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496128589

PECOS Enrollment IDI20250728001794

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Hermann - Texas Medical Center

Acute Care Hospitals · Houston, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450068

Location6411 FanninHouston, TX 77030 · Harris County

Emergency services Birthing friendly

Memorial Hermann Katy Hospital

Acute Care Hospitals · Katy, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450847

Location23900 Katy FreewayKaty, TX 77494 · Fort Bend County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95209 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$90.32 typical visit price

range $58.87 – $176.60

Typical copayment $22.58 (range $14.71 – $44.15)

Most-billed visit code 99203

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NKECHIYERE NICOLE EBOKA DO

Family Medicine