Antineoplastic Combined Chemotherapy ProtocolsCarcinoma, Pancreatic DuctalChemotherapy, Adjuvant
Dr. Chet W. Hammill, MD
NPI1720283310PAC ID2466506514
- Medicare services, 2022
- 49
- Part D claims, 2021
- 27
- Publications
- 89
- Clinical trials
- 10
- Hospital affiliations
- 2
- Practice address
- 4805 NE Glisan Street, Portland, OR 97213
- Practice phone
- Call (503) 215-1111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hammill's professional email, personal email and mobile number
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Dr. Chet W. Hammill is a general surgeon in Portland, Oregon
Dr. Hammill practices at Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services.
Dr. Hammill's NPI, 1720283310, was assigned on June 15, 2007. Dr. Hammill graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1998. Dr. Hammill holds Oregon license MD215325.
NPI and contact details
- NPI
- 1720283310NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466506514
- NPI enumeration date
- June 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 215-1111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chet W. Hammill practices at Providence Portland Medical Center in Portland, Oregon
Dr. Hammill's primary practice is Providence Portland Medical Center, at 4805 NE Glisan Street, Portland, OR 97213 in Multnomah County. The practice phone is (503) 215-1111.
- Providence Portland Medical Center4805 NE Glisan Street, Portland, OR 97213 · Multnomah CountyPhone(503) 215-1111
Source: Dmand AI Affiliation Data
Dr. Chet W. Hammill is affiliated with 2 sites of care and 4 medical groups
Dr. Hammill's primary practice is Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services. Dr. Hammill is also affiliated with Barnes-Jewish Hospital. The medical group on file is The Oregon Clinic. Dmand AI also links Dr. Hammill to 3 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chet W. Hammill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammill practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Portland Medical Center | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chet W. Hammill is one of 438 general surgeons in Oregon
Surgery is Dr. Hammill's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Hammill's licenses on file in 2 states: Oregon and Missouri.
Specialties and state licenses
- Surgery, OregonPrimary
- Missouri license
General surgeons near Dr. Hammill
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
438general surgeons in Oregon138general surgeons in Portland11general surgeons at Providence Portland Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chet W. Hammill billed Medicare for 49 services in 2022
CMS data shows 49 Medicare services from Dr. Hammill across 3 procedure codes in 2022, all of them office visits. Medicare paid $5,047 for them. Every service was in an office.
Medicare services, 202249
Paid by Medicare$5,047
Procedure codes3
Dr. Hammill's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1022022: 4952%
Dr. Hammill compared with the Oregon median for general surgeons, 2022
- Dr. Hammill
- Oregon median
- Medicare services
- 49vs 8341% below
- Part D claims
- 27vs 4743% below
Medians across 433 general surgeons in Oregon with Dmand AI profiles that report each measure.
Dr. Hammill's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chet W. Hammill's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Hammill's median patient age at 71, with 46% women.
Dr. Hammill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women46%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. Chet W. Hammill wrote 27 Medicare Part D claims in 2021
In 2021, Dr. Hammill wrote 27 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $209 in total drug cost. In 2020, CMS named 26 claims across 2 drugs.
Part D claims, 202127
Drugs named by CMS1
Total drug cost$209
Dr. Hammill's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 262021: 274%
Drugs named by CMS: 1 in 2021, 2 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Chet W. Hammill takes part in Medicare
Dr. Hammill accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chet W. Hammill has 89 publications on record
Dmand AI links 89 papers to Dr. Hammill, published from 2012 to 2024. 2020 was the busiest year, with 12. The most frequent topics are Pancreatic Neoplasms, Pancreaticoduodenectomy and Pancreatectomy. Dr. Hammill has published most often in HPB (Oxford). Dr. Hammill's most frequent co-authors are Dominic Emmanuel Sanford, MD, Paul Daniel Hansen, MD and Maria Affleck Cassera, MD.
Papers89
Years published2012 to 2024
Dr. Hammill's papers by year, 2015 to 2024
Topics Dr. Hammill writes about most
- Pancreatic Neoplasms
- Pancreaticoduodenectomy
- Pancreatectomy
- Postoperative Complications
- Liver Neoplasms
- Cholecystectomy, Laparoscopic
- Hepatectomy
- Laparoscopy
Dr. Hammill's most frequent co-authors
- Dominic Emmanuel Sanford, MD25 shared papers
- Paul Daniel Hansen, MD22 shared papers
- Maria Affleck Cassera, MD18 shared papers
Recent publications by Dr. Hammill
Absorbable ImplantsHydrogen-Ion ConcentrationTransducers
Absorbable ImplantsAnastomotic LeakGastrointestinal Tract
See who Dr. Hammill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hammill works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chet W. Hammill has worked on 10 clinical trials
Dmand AI links Dr. Hammill to 10 clinical trials, 3 of them phase 2 studies. 4 are still active or recruiting. Conditions studied include Carcinoma, Pancreatic Ductal, Carcinoma, Ductal and Duodenal Neoplasms. Washington University School of Medicine sponsors the most, 7.
Clinical trials with Dr. Hammill by phase
- 1Phase 1: 1 trial
- 1Phase 1/2: 1 trial
- 3Phase 2: 3 trials
- 1Phase 3: 1 trial
- NonePhase 4: no trials
Trials with no phase (devices, behavioral studies) are left out.
Conditions in Dr. Hammill's trials
- Carcinoma, Pancreatic Ductal
- Carcinoma, Ductal
- Duodenal Neoplasms
- Pancreatic Neoplasms
- Rectal Diseases
Investigators on the most trials with Dr. Hammill
- Dominic Emmanuel Sanford, MD4 shared trials
- Steven Martin Strasberg, MD4 shared trials
- Haeseong Park, MD3 shared trials
Recent clinical trials with Dr. Hammill
Cabozantinib
Phase II Study of Stereotactic Body Radiotherapy and Focal Adhesion Kinase Inhibitor in Advanced Pancreas Adenocarcinoma (opens in a new tab)
Active, not recruitingPhase 2
Pancreatic NeoplasmsPancreatic DiseasesDefactinibAdaptive stereotactic body radiation therapy
Evaluation of the Role of Proton Pump Inhibitors on the Postoperative Course Following Pancreaticoduodenectomy (opens in a new tab)
TerminatedPhase 2
Duodenal NeoplasmsDuodenal DiseasesPantoprazole
Registry to Evaluate Effectiveness and Safety of the NanoKnife System for the Ablation of Stage 3 Pancreatic Adenocarcinoma (opens in a new tab)
Active, not recruiting
Carcinoma, Pancreatic DuctalCarcinoma, DuctalNanoKnife SystemSOC
A Randomized, Multicenter, Controlled, Unblinded Study to Assess the Safety and Efficacy of the NanoKnife® System for the Ablation of Unresectable Stage 3 Pancreatic Adenocarcinoma (opens in a new tab)
Active, not recruitingPhase 3
Carcinoma, Pancreatic DuctalCarcinoma, DuctalModified FOLFIRINOX RegimenNanoKnife System
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Chet W. Hammill received $56,432 in industry payments from 2016 to 2024
CMS Open Payments shows 115 general payments to Dr. Hammill from 12 drug and device companies from 2016 to 2024. Consulting fees make up the largest share, 34% of the total. Intuitive Surgical, Inc. paid the most, $21,871.
General payments to Dr. Hammill by program year, 2016 to 2024
General payments to Dr. Hammill by kind, 2016 to 2024
$56.4Kin total
- Consulting fees$19,09334%
- Travel and lodging$12,52922%
- Education$12,45022%
- Honoraria$9,40017%
- Food and beverage$2,9605%
Companies that paid Dr. Hammill the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chet W. Hammill graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Hammill graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chet W. Hammill's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Chet W. Hammill
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Chet W. Hammill's NPI number?
Dr. Chet W. Hammill's NPI number is 1720283310. It was assigned on June 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Chet W. Hammill?
Dr. Chet W. Hammill is a general surgeon in Portland, Oregon. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Chet W. Hammill practice?
Dr. Hammill practices at 4805 NE Glisan Street, Portland, OR 97213. Dr. Hammill's primary practice is Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services. Dmand AI also links Dr. Hammill to 3 medical groups.
What is Dr. Chet W. Hammill's office phone number?
The practice phone on file for Dr. Hammill is (503) 215-1111.
What is Dr. Chet W. Hammill's medical license number?
Dr. Hammill holds Oregon license MD215325, one of the licenses on file in 2 states.
Which states has Dr. Chet W. Hammill been licensed in?
Dmand AI has state licenses on file for Dr. Hammill in Oregon and Missouri.
Which hospitals is Dr. Chet W. Hammill affiliated with?
Dr. Hammill practices at Providence Portland Medical Center in Portland, Oregon. Dr. Hammill is also affiliated with Barnes-Jewish Hospital.
What medical group is Dr. Chet W. Hammill part of?
Dr. Hammill is linked to The Oregon Clinic. Dmand AI links Dr. Hammill to 3 more medical groups.
Does Dr. Chet W. Hammill accept Medicare?
Yes. CMS data shows Dr. Hammill billed Medicare for 49 services in 2022, and Dr. Hammill accepts Medicare assignment.
What services does Dr. Chet W. Hammill bill to Medicare?
In 2022, Dr. Hammill's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and office visit, established patient (99215).
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Where did Dr. Chet W. Hammill go to medical school?
Dr. Hammill graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1998.
What drugs does Dr. Chet W. Hammill prescribe most?
In 2021 Medicare Part D data, Dr. Hammill's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Chet W. Hammill received payments from drug or device companies?
CMS Open Payments shows $56,432 in general payments to Dr. Hammill from 12 companies from 2016 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Chet W. Hammill been practicing?
Dr. Hammill graduated from medical school in 1998, 28 years ago.
Does Dr. Chet W. Hammill do research?
Dmand AI links 89 publications to Dr. Hammill, published from 2012 to 2024. Dr. Hammill has worked on 10 clinical trials.
Who does Dr. Chet W. Hammill publish with?
Dr. Hammill's most frequent co-authors are Dominic Emmanuel Sanford, MD (25 shared papers), Paul Daniel Hansen, MD (22 shared papers) and Maria Affleck Cassera, MD (18 shared papers).
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