John Thomas Callahan, DPM
- Medicare patients, 2024
- 262
- Part D claims, 2024
- 627
- Hospital affiliations
- 2
- Industry payments
- $150
- Medical group
- 1
- Practice address
- 2235 Mission Se St, Salem, OR 97302
- Practice phone
- Call (503) 581-2505
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Santiam Foot Clinic
Podiatry practice · Salem, Oregon
Find John Callahan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John Thomas Callahan is a podiatrist in Salem, Oregon
John Callahan practices at Santiam Foot Clinic in Salem, Oregon.
John Callahan's NPI, 1861496804, was assigned on June 8, 2005. John Callahan graduated from California School of Podiatric Medicine in 1997. John Callahan holds Oregon license DP00297.
- NPI
- 1861496804NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214914928
- NPI enumeration date
- June 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 581-2505
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John Thomas Callahan practices at Santiam Foot Clinic in Salem, Oregon
John Callahan's primary practice is Santiam Foot Clinic, at 2235 Mission Se St, Salem, OR 97302. The practice phone is (503) 581-2505.
- Santiam Foot Clinic2235 Mission Se St, Salem, OR 97302Phone(503) 581-2505
Source: Dmand AI Affiliation Data
John Thomas Callahan is affiliated with 3 sites of care and 1 medical group
John Callahan's primary practice is Santiam Foot Clinic in Salem, Oregon. John Callahan is also affiliated with Salem Hospital. The medical group on file is Santiam Foot Clinic. Dmand AI also links John Callahan to 1 more hospital, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John Thomas Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Callahan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santiam Foot Clinic | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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John Thomas Callahan is one of 79 podiatrists in Oregon
Podiatrist is John Callahan's primary specialty in the NPI Registry, under taxonomy code 213E00000X. John Callahan is licensed in Oregon.
Specialties and state licenses
- Podiatrist, OregonPrimary
Podiatrists near John Callahan
Counts of podiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John Thomas Callahan treated 262 Medicare patients in 2024, average age 73
CMS counts 262 Medicare patients who saw John Callahan in 2024. The largest group is 65 to 74, with 118 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Callahan's median patient age at 72, with 57% women.
John Callahan's Medicare patients by age, 2024
John Callahan's Medicare patients by sex, 2024
- Women14756%
- Men11544%
Chronic conditions among John Callahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes48%
- Ischemic heart disease29%
- Chronic kidney disease28%
- Mood disorders28%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
John Callahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Thomas Callahan wrote 627 Medicare Part D claims in 2024
In 2024, John Callahan wrote 627 Medicare Part D claims for 230 patients. 91% of them were for generic drugs.
John Callahan's Part D claims by kind of drug, 2024
- Generic570 claims91%
- Brand-name57 claims9%
Drug classes CMS tracks in John Callahan's Part D claims, 2024
- Opioids6%38 of 627 claims
- Antibiotics16%103 of 627 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John Thomas Callahan ranks in the 89th percentile for removal of tissue in Medicare
John Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 154 procedures of removal of tissue by John Callahan, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where John Callahan ranks in Medicare procedure volume
- Removal of nail tissue
- 73rd percentile175 procedures
- Removal of tissue
- 89th percentile154 procedures
- Removal or shaving of skin growth
- 79th percentile49 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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John Thomas Callahan received $150 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Callahan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Paragon 28, Inc. paid the most, $150.
Companies that paid John Callahan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John Thomas Callahan graduated from California School of Podiatric Medicine
John Callahan graduated from California School of Podiatric Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John Thomas Callahan'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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)Doctors and Clinicians Utilization Data (CMS) (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 John Thomas Callahan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Thomas Callahan's NPI number?
John Thomas Callahan's NPI number is 1861496804. It was assigned on June 8, 2005, and it is active in the NPI Registry.
What does John Thomas Callahan specialize in?
John Thomas Callahan is a podiatrist in Salem, Oregon. The primary specialty in the NPI Registry is Podiatrist (taxonomy code 213E00000X).
Where does John Thomas Callahan practice?
John Callahan practices at 2235 Mission Se St, Salem, OR 97302. John Callahan's primary practice is Santiam Foot Clinic in Salem, Oregon. Dmand AI also links John Callahan to 1 hospital.
What is John Thomas Callahan's office phone number?
The practice phone on file for John Callahan is (503) 581-2505.
What is John Thomas Callahan's medical license number?
John Callahan holds Oregon license DP00297.
Which hospitals is John Thomas Callahan affiliated with?
John Callahan is affiliated with Salem Hospital. Dmand AI links John Callahan to 1 more hospital.
What medical group is John Thomas Callahan part of?
John Callahan is linked to Santiam Foot Clinic.
Does John Thomas Callahan accept Medicare?
Yes. CMS lists John Callahan as accepting Medicare assignment.
How many Medicare patients does John Thomas Callahan see?
CMS counts 262 Medicare patients who saw John Callahan in 2024, with an average age of 73.
Where did John Thomas Callahan go to medical school?
John Callahan graduated from California School of Podiatric Medicine in 1997.
Has John Thomas Callahan received payments from drug or device companies?
CMS Open Payments shows $150 in general payments to John Callahan from 1 company from 2025 to 2025. The largest total came from Paragon 28, Inc.
How long has John Thomas Callahan been practicing?
John Callahan graduated from medical school in 1997, 29 years ago.
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