NPPES file of Aug 9, 2026

Gregory A. Robertson, M.D.

Surgery Physician · Chandler, AZ

Gregory A. Robertson, M.D. is a surgery physician with a practice address in Chandler, Arizona, and NPI 1609917418, issued on Feb 12, 2007. Check the license (Arizona 17506, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609917418
Name
Gregory A. Robertson
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
17506 AZ
Self-reported in NPPES; status is on the state search
Practice location
1100 S Dobson RD Ste 204, Chandler, AZ 85286
Phone
(602) 726-3606
Enumerated
Feb 12, 2007
Record last updated
Dec 6, 2024
Fax
(623) 208-5075
Medicaid ID
296170-004 AZ
Medicare enrollment
Enrolled (PECOS I20051129000029); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 1985
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1100 S Dobson RD Ste 204

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amanda Davis, PASurgical Physician Assistant1700028602
  2. Shawn Stevenson, D.O.Surgery Physician1891766127

Verify Gregory A. Robertson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 17506
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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35% fewer Medicare Part D claims than the average surgery physician in 2024

95 Medicare Part D claims for 68 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 56 claims were for opioids.

  1. Gregory Robertson95
  2. Specialty average147

Most prescribed

  1. Oxycodone-Acetaminophen47 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.

Industry payments in 2024: $9,995.89

8 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Robertson$9,995.89
  2. Specialty average$3,513.80

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

  1. Sjhmc Physician ServicesGilbert, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory A. Robertson among 760 surgery physician records in Arizona

Gregory A. Robertson, M.D. is one of 760 surgery physician records with a practice address in Arizona. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.

  • NPI issued2007 · 39% of these records are older, 52% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated1985 · median 2006 among the 401 with a school on file
  • Record last updated2024 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Arizona

There are 760 surgery physician records in Arizona.

The 8 surgery physician records with the nearest ZIP codes

  1. Albert Amini, M.D.Chandler, AZ 852861386890556
  2. Shawn Stevenson, D.O.Chandler, AZ 852861891766127
  3. Alan JosephsonTempe, AZ 852841578517827
  4. Clayton Knight, M.D.Tempe, AZ 852881437431749
  5. Victoria Lee, MDTempe, AZ 852831679540074
  6. Thomas Buddensick, M.D.Tempe, AZ 852821356659031
  7. Margaret Butler, MDTempe, AZ 852821841279270
  8. Catherine Ho, D.O.Tempe, AZ 852821881841963

Common questions

What is Gregory A. Robertson, M.D.'s NPI number?

Gregory A. Robertson, M.D.'s National Provider Identifier (NPI) is 1609917418, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Gregory A. Robertson, M.D. located?

The NPPES record lists a practice address at 1100 S Dobson RD Ste 204, Chandler, AZ, 85286. Phone: (602) 726-3606. Providers update this record themselves, so call before visiting.

How can I verify Gregory A. Robertson, M.D.'s license?

NPPES lists Arizona license number 17506, 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 A. Robertson, M.D. prescribe under Medicare Part D?

In 2024, Gregory A. Robertson, M.D. had 95 Medicare Part D claims for 68 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

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.