Dr. Christopher Calkins, MD
- Part D claims, 2024
- 67
- Hospital affiliations
- 2
- Industry payments
- $37
- State licenses
- 2
- Year NPI issued
- 2021
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Calkins' 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.
Dr. Christopher Calkins is an internist in Stanford, California
Dr. Calkins practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Calkins' NPI, 1144809666, was assigned on April 2, 2021. Dr. Calkins graduated from Stanford University School Of Medicine in 2021. Dr. Calkins holds California license A195245.
- NPI
- 1144809666NPI Registry (opens in a new tab)
- NPI enumeration date
- April 2, 2021
- NPI status
- Active
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Christopher Calkins practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Calkins' primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Christopher Calkins is affiliated with 2 sites of care
Dr. Calkins' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Calkins to 1 hospital, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher Calkins' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Calkins practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Stanford University and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christopher Calkins is one of 16,751 internists in California
Internal medicine is Dr. Calkins' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Calkins is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Calkins' licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Massachusetts license
Internists near Dr. Calkins
Counts of internists 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
Dr. Christopher Calkins' patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Calkins' median patient age at 60, with 67% women.
Dr. Calkins' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Christopher Calkins wrote 67 Medicare Part D claims in 2024
In 2024, Dr. Calkins wrote 67 Medicare Part D claims for 31 patients. 66% of them were for generic drugs.
Dr. Calkins' Part D claims by kind of drug, 2024
- Generic44 claims66%
- Brand-name and other23 claims34%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Christopher Calkins received $37 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Calkins from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Vertex Pharmaceuticals Incorporated paid the most, $37.
Companies that paid Dr. Calkins the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher Calkins graduated from Stanford University School Of Medicine
Dr. Calkins graduated from Stanford University School Of Medicine in 2021.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Calkins'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Dr. Christopher Calkins
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. Christopher Calkins' NPI number?
Dr. Christopher Calkins' NPI number is 1144809666. It was assigned on April 2, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Calkins?
Dr. Christopher Calkins is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Christopher Calkins practice?
Dr. Calkins practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Calkins' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Calkins to 1 hospital.
What is Dr. Christopher Calkins' office phone number?
The practice phone on file for Dr. Calkins is (650) 723-4000.
What is Dr. Christopher Calkins' medical license number?
Dr. Calkins holds California license A195245, one of the licenses on file in 2 states.
Which states has Dr. Christopher Calkins been licensed in?
Dmand AI has state licenses on file for Dr. Calkins in California (2024 to 2026) and Massachusetts (2021 to 2024).
Which hospitals is Dr. Christopher Calkins affiliated with?
Dr. Calkins practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Calkins to 1 more hospital.
Is Dr. Christopher Calkins board certified?
Yes. Dr. Calkins is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Christopher Calkins go to medical school?
Dr. Calkins graduated from Stanford University School Of Medicine in 2021.
Has Dr. Christopher Calkins received payments from drug or device companies?
CMS Open Payments shows $37 in general payments to Dr. Calkins from 1 company from 2025 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Dr. Christopher Calkins been practicing?
Dr. Calkins graduated from medical school in 2021, 5 years ago.
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