Dig Dis Sci
Dietary CarbohydratesGastric EmptyingGlucose
Dr. Paul Olaf Gulsrud, MD
NPI1801975966
- Medicare services, 2023
- 957
- Part D claims, 2024
- 575
- Publications
- 3
- Industry payments
- $1,090
- Insurance carriers
- 13
- Practice address
- 214 W E St, Ontario, CA 91762
- Practice phone
- Call (818) 712-9154
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Gulsrud'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. Paul Olaf Gulsrud is a gastroenterologist in Ontario, California
Dr. Gulsrud practices in Ontario, California.
Dr. Gulsrud's NPI, 1801975966, was assigned on November 2, 2006. Dr. Gulsrud graduated from University of California, Geffen School of Medicine in 1973. Dr. Gulsrud holds California license G27226.
NPI and contact details
- NPI
- 1801975966NPI Registry (opens in a new tab)
- NPI enumeration date
- November 2, 2006
- NPI status
- Active
- Practice phone
- (818) 712-9154
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Paul Olaf Gulsrud's practice address is in Ontario, California
Dr. Gulsrud's practice address in the NPI Registry is 214 W E St, Ontario, CA 91762, in San Bernardino County. The practice phone is (818) 712-9154.
- NPI Registry address214 W E St, Ontario, CA 91762 · San Bernardino CountyPhone(818) 712-9154
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Paul Olaf Gulsrud's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gulsrud practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Gulsrud's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Paul Olaf Gulsrud is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Gulsrud's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Gulsrud is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Gulsrud is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gallbladder or bile duct inflammation, acute gastroduodenitis, anxiety, arthritis, asthma, atrial fibrillation and flutter and bronchitis among the conditions Dr. Gulsrud treats.
Gastroenterologists near Dr. Gulsrud
Counts of gastroenterologists 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. Paul Olaf Gulsrud billed Medicare for 957 services in 2023
CMS data shows 957 Medicare services from Dr. Gulsrud across 8 procedure codes in 2023. Medicare paid $94,166 for them.
Medicare services, 2023957
Paid by Medicare$94,166
Procedure codes8
Dr. Gulsrud's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 7502023: 84913%
- Tests and treatments
- 2022: 602023: 6813%
- Other services
- 2022: 722023: 2763%
- Surgery
- 2022: 172023: 1324%
Where Dr. Gulsrud's Medicare services took place, 2023
- In an office89493%
- In a facility637%
Dr. Gulsrud compared with the California median for gastroenterologists, 2023
- Dr. Gulsrud
- California median
- Medicare services
- 957vs 58663% above
- Part D claims
- 331vs 38013% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Gulsrud's most billed Medicare procedure codes, 2023
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. Gulsrud?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gulsrud and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Paul Olaf Gulsrud's patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Gulsrud's median patient age at 79, with 40% women.
Dr. Gulsrud's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Paul Olaf Gulsrud wrote 575 Medicare Part D claims in 2024
In 2024, Dr. Gulsrud wrote 575 Medicare Part D claims for 149 patients. 93% of them were for generic drugs. CMS names the drug for 331 of them, across 14 drugs with 11 or more claims each, at $4,063 in total drug cost. In 2023, CMS named 2,714 claims across 65 drugs.
Part D claims, 2024575
Drugs named by CMS14
Total drug cost$4,063
Part D patients149
Dr. Gulsrud's Part D claims by kind of drug, 2024
- Generic534 claims93%
- Brand-name41 claims7%
Dr. Gulsrud'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,7142024: 33188%
Drugs named by CMS: 14 in 2024, 65 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
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Dr. Paul Olaf Gulsrud has 3 publications on record
Dmand AI links 3 papers to Dr. Gulsrud. The most frequent topics are Gastric Emptying, Glucose and Posture. Dr. Gulsrud's most frequent co-author is Mitchell Bruce Cohen, MD.
Papers3
Topics Dr. Gulsrud writes about most
- Gastric Emptying
- Glucose
- Posture
- Starch
- Vagotomy
Dr. Gulsrud's most frequent co-authors
Recent publications by Dr. Gulsrud
Gastroenterology
Blood GlucoseCarbohydratesGastric Emptying
See who Dr. Gulsrud researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gulsrud works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Paul Olaf Gulsrud received $1,090 in industry payments from 2016 to 2019
CMS Open Payments shows 11 general payments to Dr. Gulsrud from 8 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $268.
General payments to Dr. Gulsrud by program year, 2016 to 2019
General payments to Dr. Gulsrud by kind, 2016 to 2019
$1.1Kin total
- Food and beverage$1,087100%
- Education$40%
Companies that paid Dr. Gulsrud the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Paul Olaf Gulsrud graduated from University of California, Geffen School of Medicine
Dr. Gulsrud graduated from University of California, Geffen School of Medicine in 1973.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Paul Olaf Gulsrud accepts plans from 13 insurance carriers
Dr. Gulsrud is in network with 13 carriers, including United Healthcare, Elevance and HCSC. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Molina
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Gulsrud accepts, by number of carriers
- PPO8
- HMO7
- Medicare4
- EPO3
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Paul Olaf Gulsrud'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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) |
| 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. Paul Olaf Gulsrud
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. Paul Olaf Gulsrud's NPI number?
Dr. Paul Olaf Gulsrud's NPI number is 1801975966. It was assigned on November 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Paul Olaf Gulsrud?
Dr. Paul Olaf Gulsrud is a gastroenterologist in Ontario, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Paul Olaf Gulsrud practice?
Dr. Gulsrud practices at 214 W E St, Ontario, CA 91762.
What is Dr. Paul Olaf Gulsrud's office phone number?
The practice phone on file for Dr. Gulsrud is (818) 712-9154.
What is Dr. Paul Olaf Gulsrud's medical license number?
Dr. Gulsrud holds California license G27226.
Does Dr. Paul Olaf Gulsrud accept Medicare?
Yes. CMS data shows Dr. Gulsrud billed Medicare for 957 services in 2023.
Is Dr. Paul Olaf Gulsrud board certified?
Yes. Dr. Gulsrud is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Paul Olaf Gulsrud bill to Medicare?
In 2023, Dr. Gulsrud's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and heart test or procedure (93000).
Where did Dr. Paul Olaf Gulsrud go to medical school?
Dr. Gulsrud graduated from University of California, Geffen School of Medicine in 1973.
What drugs does Dr. Paul Olaf Gulsrud prescribe most?
In 2024 Medicare Part D data, Dr. Gulsrud's most prescribed drugs by claims were Lisinopril, Atorvastatin Calcium and Amlodipine Besylate.
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Has Dr. Paul Olaf Gulsrud received payments from drug or device companies?
CMS Open Payments shows $1,090 in general payments to Dr. Gulsrud from 8 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. Paul Olaf Gulsrud been practicing?
Dr. Gulsrud graduated from medical school in 1973, 53 years ago.
Does Dr. Paul Olaf Gulsrud do research?
Dmand AI links 3 publications to Dr. Gulsrud.
Who does Dr. Paul Olaf Gulsrud publish with?
Dr. Gulsrud's most frequent co-authors are Mitchell Bruce Cohen, MD (1 shared paper).
What insurance does Dr. Paul Olaf Gulsrud accept?
Dr. Gulsrud is in network with 13 carriers, including United Healthcare, Elevance and HCSC. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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