Gregory Trent Walker, MD
Orthopaedic Foot and Ankle Surgery Physician · Tucson, AZ
Gregory Trent Walker, MD is an orthopaedic foot and ankle surgery physician with a practice address in Tucson, Arizona, and NPI 1801250659, issued on Apr 7, 2016. Check the license (Arizona 85758, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Trent Walker
- Credential
- MD
- Primary taxonomy
- Orthopaedic Foot and Ankle Surgery Physician 207XX0004X
- License number
- 85758 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 6130 N LA Cholla Blvd Ste 135A, Tucson, AZ 85741
- Phone
- (520) 881-1394
- Enumerated
- Apr 7, 2016
- Record last updated
- Nov 28, 2022
- Fax
- (520) 882-7464
- Medicaid ID
- 250013578 NV
- Medicare enrollment
- Enrolled (PECOS I20220805000609); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest orthopaedic foot and ankle surgery physician records → All 19 in Arizona → Look up another NPI →
Also registered at 6130 N LA Cholla Blvd Ste 135A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Devvin Cubra, PA-CPhysician Assistant1194300285
- Jeffrey Johnson, M.D.Obstetrics & Gynecology Physician1366734998
- Olivia Sobojinski, PA-CPhysician Assistant1003657677
- Steven Ward, DOOrthopaedic Surgery Physician1306289764
Verify Gregory Trent Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 85758Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% more Medicare Part D claims than the average orthopaedic foot and ankle surgery physician in 2024
352 Medicare Part D claims for 108 beneficiaries, against an average of 225 among the 648 providers of this specialty who prescribed in Part D. 87 claims were for opioids.
Most prescribed
- Gabapentin69 claims
- Oxycodone Hcl53 claims
- Meloxicam42 claims
- Ondansetron Hcl35 claims
- Tramadol Hcl27 claims
- Sulfamethoxazole-Trimethoprim24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 89.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $465.54
33 payments; by number, the most common kind was food and beverage; the largest payer was Orthofix Medical, Inc. The 643 providers of this specialty with any payment received $23,314.63 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tucson Physician Group Holdings LLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Trent Walker among 19 orthopaedic foot and ankle surgery physician records in Arizona
Gregory Trent Walker, MD is one of 19 orthopaedic foot and ankle surgery physician records with a practice address in Arizona. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 89% of them.
- NPI issued2016 · 89% of these records are older, 0% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2016 · median 2006 among the 16 with a school on file
- Record last updated2022 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0004X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Foot and Ankle Surgery Physician providers in Arizona
There are 19 orthopaedic foot and ankle surgery physician records in Arizona.
All 19 in Arizona → Every provider in Tucson → Orthopaedic Foot and Ankle Surgery Physician nationwide →
The 8 orthopaedic foot and ankle surgery physician records with the nearest ZIP codes
- Geoffrey Landis, DOTucson, AZ 857411982645719
- Eric Anctil, MDTucson, AZ 857121528166212
- Domingo Cheleuitte, MDTucson, AZ 857121598797318
- Christopher Diefenbach, MDFlagstaff, AZ 860011437440070
- Stephen Knecht, MDFlagstaff, AZ 860011720050156
- Parisa Morris, MDAvondale, AZ 853921861663593
- Robert Kaye, M.D.Yuma, AZ 853641558365940
- Jason Patterson, M.D.Gilbert, AZ 852971831326909
Common questions
What is Gregory Trent Walker, MD's NPI number?
Gregory Trent Walker, MD's National Provider Identifier (NPI) is 1801250659, issued on Apr 7, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Trent Walker, MD located?
The NPPES record lists a practice address at 6130 N LA Cholla Blvd Ste 135A, Tucson, AZ, 85741. Phone: (520) 881-1394. Providers update this record themselves, so call before visiting.
How can I verify Gregory Trent Walker, MD's license?
NPPES lists Arizona license number 85758, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Trent Walker, MD prescribe under Medicare Part D?
In 2024, Gregory Trent Walker, MD had 352 Medicare Part D claims for 108 beneficiaries; the average among orthopaedic foot and ankle surgery physician prescribers was 225. Part D covers Medicare prescriptions only.
What is Gregory Trent Walker, MD's MIPS final score?
The 2023 MIPS final score is 89.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.