Dr. Kathryn Joanne Hallsten, MD
- Part D claims, 2024
- 32
- Hospital affiliations
- 2
- State licenses
- 2
- Year NPI issued
- 2007
- 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. Hallsten'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.
Dr. Kathryn Joanne Hallsten is an internist in Stanford, California
Dr. Hallsten practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Hallsten's NPI, 1184750861, was assigned on February 26, 2007. Dr. Hallsten graduated from UCSF School of Medicine in 1985. Dr. Hallsten holds California license G60511.
- NPI
- 1184750861NPI Registry (opens in a new tab)
- NPI enumeration date
- February 26, 2007
- NPI status
- Active
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Kathryn Joanne Hallsten practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Hallsten's 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. Kathryn Joanne Hallsten is affiliated with 2 sites of care
Dr. Hallsten's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Hallsten 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. Kathryn Joanne Hallsten's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hallsten 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. Kathryn Joanne Hallsten is one of 16,751 internists in California
Internal medicine is Dr. Hallsten's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hallsten is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Hallsten's licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Colorado license
Internists near Dr. Hallsten
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. Kathryn Joanne Hallsten's patients have a median age of 81
Across all payers, Dmand AI patient panel data puts Dr. Hallsten's median patient age at 81, with 67% women.
Dr. Hallsten's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Kathryn Joanne Hallsten wrote 32 Medicare Part D claims in 2024
In 2024, Dr. Hallsten wrote 32 Medicare Part D claims. 97% of them were for generic drugs. They cover 2 drugs, with $660 in total drug cost. In 2022, CMS named 416 claims across 20 drugs.
Dr. Hallsten's Part D claims by kind of drug, 2024
- Generic31 claims97%
- Brand-name and other1 claims3%
Dr. Hallsten's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 4162023: 3292%
Drugs named by CMS: 2 in 2023, 20 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and 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. Kathryn Joanne Hallsten graduated from UCSF School of Medicine
Dr. Hallsten graduated from UCSF School of Medicine in 1985.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathryn Joanne Hallsten'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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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. Kathryn Joanne Hallsten
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. Kathryn Joanne Hallsten's NPI number?
Dr. Kathryn Joanne Hallsten's NPI number is 1184750861. It was assigned on February 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathryn Joanne Hallsten?
Dr. Kathryn Joanne Hallsten is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kathryn Joanne Hallsten practice?
Dr. Hallsten practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Hallsten's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Hallsten to 1 hospital.
What is Dr. Kathryn Joanne Hallsten's office phone number?
The practice phone on file for Dr. Hallsten is (650) 723-4000.
What is Dr. Kathryn Joanne Hallsten's medical license number?
Dr. Hallsten holds California license G60511, one of the licenses on file in 2 states.
Which states has Dr. Kathryn Joanne Hallsten been licensed in?
Dmand AI has state licenses on file for Dr. Hallsten in California (1987 to 2027) and Colorado (1995 to 1997).
Which hospitals is Dr. Kathryn Joanne Hallsten affiliated with?
Dr. Hallsten practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Hallsten to 1 more hospital.
Is Dr. Kathryn Joanne Hallsten board certified?
Yes. Dr. Hallsten is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Kathryn Joanne Hallsten go to medical school?
Dr. Hallsten graduated from UCSF School of Medicine in 1985.
What drugs does Dr. Kathryn Joanne Hallsten prescribe most?
In 2023 Medicare Part D data, Dr. Hallsten's most prescribed drugs by claims were Gabapentin and Atorvastatin Calcium.
How long has Dr. Kathryn Joanne Hallsten been practicing?
Dr. Hallsten graduated from medical school in 1985, 41 years ago.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card