Neurogastroenterol Motil
Esophagogastric JunctionManometryPressure
Dr. Kirsten A. Regalia, MD
NPI1710201215PAC ID1254637838
- Medicare services, 2018
- 275
- Part D claims, 2024
- 615
- Publications
- 10
- Hospital affiliations
- 2
- Industry payments
- $14
- Practice address
- 1425 S Main Street, Walnut Creek, CA 94596
- Practice phone
- Call (925) 295-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Regalia'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. Kirsten A. Regalia is an internist in Walnut Creek, California
Dr. Regalia practices at Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente.
Dr. Regalia's NPI, 1710201215, was assigned on March 26, 2010. Dr. Regalia graduated from Georgetown University School Of Medicine in 2010. Dr. Regalia holds California license A125295.
NPI and contact details
- NPI
- 1710201215NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254637838
- NPI enumeration date
- March 26, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 295-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kirsten A. Regalia practices at Walnut Creek Medical Center in Walnut Creek, California
Dr. Regalia's primary practice is Walnut Creek Medical Center, at 1425 S Main Street, Walnut Creek, CA 94596 in Contra Costa County. The practice phone is (925) 295-4000.
- Walnut Creek Medical Center1425 S Main Street, Walnut Creek, CA 94596 · Contra Costa CountyPhone(925) 295-4000
Source: Dmand AI Affiliation Data
Dr. Kirsten A. Regalia is affiliated with 2 sites of care and 1 medical group
Dr. Regalia's primary practice is Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente. Dr. Regalia is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kirsten A. Regalia's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Regalia practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walnut Creek Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Regalia practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kirsten A. Regalia is one of 16,751 internists in California
Internal medicine is Dr. Regalia's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Regalia is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Regalia's licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Colorado license
Internists near Dr. Regalia
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
16,751internists in California148internists in Walnut Creek42internists at Walnut Creek Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kirsten A. Regalia billed Medicare for 275 services in 2018
CMS data shows 275 Medicare services from Dr. Regalia across 10 procedure codes in 2018. Medicare paid $25,346 for them.
Medicare services, 2018275
Paid by Medicare$25,346
Procedure codes10
Dr. Regalia's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1582018: 1524%
- Surgery
- 2017: 772018: 5627%
- Other services
- 2017: 462018: 3524%
- Tests and treatments
- 2017: 872018: 3263%
Where Dr. Regalia's Medicare services took place, 2018
- In an office5620%
- In a facility21980%
Dr. Regalia compared with the California median for internists, 2018
- Dr. Regalia
- California median
- Medicare services
- 275vs 36124% below
- Part D claims
- 542vs 42129% above
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Regalia's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Regalia?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Regalia and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kirsten A. Regalia's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Regalia's median patient age at 59, with 66% women.
Dr. Regalia's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women66%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Kirsten A. Regalia wrote 615 Medicare Part D claims in 2024
In 2024, Dr. Regalia wrote 615 Medicare Part D claims for 295 patients. 81% of them were for generic drugs. CMS names the drug for 542 of them, across 18 drugs with 11 or more claims each, at $346,297 in total drug cost. In 2023, CMS named 557 claims across 12 drugs.
Part D claims, 2024615
Drugs named by CMS18
Total drug cost$346,297
Part D patients295
Dr. Regalia's Part D claims by kind of drug, 2024
- Generic497 claims81%
- Brand-name118 claims19%
Dr. Regalia's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Regalia's Part D claims, 2024
- Antibiotics4%23 of 615 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5572024: 5423%
Drugs named by CMS: 18 in 2024, 12 in 2023.
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
How Dr. Kirsten A. Regalia takes part in Medicare
Dr. Regalia accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 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)
For MedTech and pharma teams
Find internists like Dr. Regalia by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Kirsten A. Regalia has 10 publications on record
Dmand AI links 10 papers to Dr. Regalia, published from 2011 to 2023. 2018 was the busiest year, with 3. The most frequent topics are Colorado. Dr. Regalia has published most often in Dig Dis Sci. Dr. Regalia's most frequent co-authors are George Triadafilopoulos, MD, John O'Brien Clarke, MD and Nielsen Quimaira Fernandez-Becker, MD, PhD.
Papers10
Years published2011 to 2023
Dr. Regalia's papers by year, 2011 to 2023
Topics Dr. Regalia writes about most
- Colorado
Dr. Regalia's most frequent co-authors
- George Triadafilopoulos, MD7 shared papers
- John O'Brien Clarke, MD6 shared papers
- Nielsen Quimaira Fernandez-Becker, MD, PhD6 shared papers
Recent publications by Dr. Regalia
AntiemeticsCannabisComparative Effectiveness Research
Endoscopy, GastrointestinalEsophageal pH MonitoringGastroesophageal Reflux
See who Dr. Regalia researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Regalia works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kirsten A. Regalia received $14 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Regalia from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $14.
Companies that paid Dr. Regalia the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kirsten A. Regalia graduated from Georgetown University School Of Medicine
Dr. Regalia graduated from Georgetown University School Of Medicine in 2010.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Kirsten A. Regalia accepts plans from 5 insurance carriers
Dr. Regalia is in network with 5 carriers, including Kaiser Permanente, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Kaiser Permanente
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- CMS Medicare
Plan types Dr. Regalia accepts, by number of carriers
- Medicare4
- PPO3
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kirsten A. Regalia'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)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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Kirsten A. Regalia
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. Kirsten A. Regalia's NPI number?
Dr. Kirsten A. Regalia's NPI number is 1710201215. It was assigned on March 26, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Kirsten A. Regalia?
Dr. Kirsten A. Regalia is an internist in Walnut Creek, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kirsten A. Regalia practice?
Dr. Regalia practices at 1425 S Main Street, Walnut Creek, CA 94596. Dr. Regalia's primary practice is Walnut Creek Medical Center in Walnut Creek, California, part of Kaiser Permanente.
What is Dr. Kirsten A. Regalia's office phone number?
The practice phone on file for Dr. Regalia is (925) 295-4000.
What is Dr. Kirsten A. Regalia's medical license number?
Dr. Regalia holds California license A125295, one of the licenses on file in 2 states.
Which states has Dr. Kirsten A. Regalia been licensed in?
Dmand AI has state licenses on file for Dr. Regalia in California (2013 to 2026) and Colorado (2012 to 2015).
Which hospitals is Dr. Kirsten A. Regalia affiliated with?
Dr. Regalia practices at Walnut Creek Medical Center in Walnut Creek, California. Dr. Regalia is also affiliated with Stanford Hospital at 300 Pasteur Drive.
What medical group is Dr. Kirsten A. Regalia part of?
Dr. Regalia is linked to The Permanente Medical Group, Inc.
Does Dr. Kirsten A. Regalia accept Medicare?
Yes. CMS data shows Dr. Regalia billed Medicare for 275 services in 2018, and Dr. Regalia accepts Medicare assignment.
Is Dr. Kirsten A. Regalia board certified?
Yes. Dr. Regalia is board certified in gastroenterology by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Kirsten A. Regalia bill to Medicare?
In 2018, Dr. Regalia's most billed Medicare services were office visit, established patient (99215), office visit, new patient (99205) and medicare service (G0500).
Where did Dr. Kirsten A. Regalia go to medical school?
Dr. Regalia graduated from Georgetown University School Of Medicine in 2010.
What drugs does Dr. Kirsten A. Regalia prescribe most?
In 2024 Medicare Part D data, Dr. Regalia's most prescribed drugs by claims were Gavilyte-C, Omeprazole and Motegrity.
Has Dr. Kirsten A. Regalia received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Regalia from 1 company from 2023 to 2023. The largest total came from Boston Scientific Corporation.
How long has Dr. Kirsten A. Regalia been practicing?
Dr. Regalia graduated from medical school in 2010, 16 years ago.
Does Dr. Kirsten A. Regalia do research?
Dmand AI links 10 publications to Dr. Regalia, published from 2011 to 2023.
Who does Dr. Kirsten A. Regalia publish with?
Dr. Regalia's most frequent co-authors are George Triadafilopoulos, MD (7 shared papers), John O'Brien Clarke, MD (6 shared papers) and Nielsen Quimaira Fernandez-Becker, MD, PhD (6 shared papers).
What insurance does Dr. Kirsten A. Regalia accept?
Dr. Regalia is in network with 5 carriers, including Kaiser Permanente, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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