Dr. Weldon John Mallgren, DO
- Medicare services, 2023
- 24
- Part D claims, 2024
- 1,846
- Hospital affiliations
- 1
- Industry payments
- $1,623
- Medical group
- 1
- Practice address
- 1200 East 3900 South, Salt Lake City, UT 84124
- Practice phone
- Call (801) 268-7111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Weldon John Mallgren is a psychiatrist in Salt Lake City, Utah
Dr. Mallgren practices at St. Mark's Hospital in Salt Lake City, Utah, part of HCA Healthcare.
Dr. Mallgren's NPI, 1841384021, was assigned on October 3, 2006. Dr. Mallgren graduated from Michigan College of Medicine and Surgery in 1993. Dr. Mallgren holds Oklahoma license 2466.
- NPI
- 1841384021NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002983343
- NPI enumeration date
- October 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (801) 268-7111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Weldon John Mallgren practices at St. Mark's Hospital in Salt Lake City, Utah
Dr. Mallgren's primary practice is St. Mark's Hospital, at 1200 East 3900 South, Salt Lake City, UT 84124 in Salt Lake County. The practice phone is (801) 268-7111.
- St. Mark's Hospital1200 East 3900 South, Salt Lake City, UT 84124 · Salt Lake CountyPhone(801) 268-7111
Source: Dmand AI Affiliation Data
Dr. Weldon John Mallgren is affiliated with 1 site of care and 1 medical group
Dr. Mallgren's primary practice is St. Mark's Hospital in Salt Lake City, Utah, part of HCA Healthcare. The medical group on file is GRAND Mental Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Weldon John Mallgren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mallgren practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Mark's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Weldon John Mallgren is one of 290 psychiatrists in Utah
Psychiatry is Dr. Mallgren's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Mallgren is licensed in Oklahoma.
Specialties and state licenses
- Psychiatry, OklahomaPrimary
Psychiatrists near Dr. Mallgren
Counts of psychiatrists 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. Weldon John Mallgren billed Medicare for 24 services in 2023
CMS data shows 24 Medicare services from Dr. Mallgren across 1 procedure code in 2023, all of them office visits. Medicare paid $1,069 for them. Every service was in an office.
Dr. Mallgren's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 452023: 2447%
Dr. Mallgren compared with the Utah median for psychiatrists, 2023
- Dr. Mallgren
- Utah median
- Medicare services
- 24vs 10978% below
- Part D claims
- 1,641vs 9417.5 times
Medians across 289 psychiatrists in Utah with Dmand AI profiles that report each measure.
Dr. Mallgren'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Weldon John Mallgren's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Mallgren's median patient age at 41, with 44% women.
Dr. Mallgren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. Weldon John Mallgren wrote 1,846 Medicare Part D claims in 2024
In 2024, Dr. Mallgren wrote 1,846 Medicare Part D claims for 282 patients. 93% of them were for generic drugs. CMS names the drug for 1,641 of them, across 43 drugs with 11 or more claims each, at $218,235 in total drug cost. In 2023, CMS named 2,120 claims across 46 drugs.
Dr. Mallgren's Part D claims by kind of drug, 2024
- Generic1,726 claims93%
- Brand-name120 claims7%
Dr. Mallgren'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. Mallgren's Part D claims, 2024
- Antipsychotics, patients 65 and over4%67 of 1,846 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: 2,1202024: 1,64123%
Drugs named by CMS: 43 in 2024, 46 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
Dr. Weldon John Mallgren offers telehealth to Medicare patients
Dr. Mallgren accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mallgren as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Weldon John Mallgren received $1,623 in industry payments from 2016 to 2025
CMS Open Payments shows 61 general payments to Dr. Mallgren from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 71% of the total. Alkermes, Inc. paid the most, $476.
General payments to Dr. Mallgren by program year, 2016 to 2025
General payments to Dr. Mallgren by kind, 2016 to 2025
- Food and beverage$1,15171%
- Speaker and faculty fees$27517%
- Consulting fees$1509%
- Education$473%
Companies that paid Dr. Mallgren the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Weldon John Mallgren graduated from Michigan College of Medicine and Surgery
Dr. Mallgren graduated from Michigan College of Medicine and Surgery in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Weldon John Mallgren'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) |
| 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. Weldon John Mallgren
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. Weldon John Mallgren's NPI number?
Dr. Weldon John Mallgren's NPI number is 1841384021. It was assigned on October 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Weldon John Mallgren?
Dr. Weldon John Mallgren is a psychiatrist in Salt Lake City, Utah. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Weldon John Mallgren practice?
Dr. Mallgren practices at 1200 East 3900 South, Salt Lake City, UT 84124. Dr. Mallgren's primary practice is St. Mark's Hospital in Salt Lake City, Utah, part of HCA Healthcare.
What is Dr. Weldon John Mallgren's office phone number?
The practice phone on file for Dr. Mallgren is (801) 268-7111.
What is Dr. Weldon John Mallgren's medical license number?
Dr. Mallgren holds Oklahoma license 2466.
Which hospitals is Dr. Weldon John Mallgren affiliated with?
Dr. Mallgren practices at St. Mark's Hospital in Salt Lake City, Utah.
What medical group is Dr. Weldon John Mallgren part of?
Dr. Mallgren is linked to GRAND Mental Health.
Does Dr. Weldon John Mallgren accept Medicare?
Yes. CMS data shows Dr. Mallgren billed Medicare for 24 services in 2023, and Dr. Mallgren accepts Medicare assignment.
Does Dr. Weldon John Mallgren offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Mallgren as offering telehealth services.
What services does Dr. Weldon John Mallgren bill to Medicare?
In 2023, Dr. Mallgren's most billed Medicare services were office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Weldon John Mallgren go to medical school?
Dr. Mallgren graduated from Michigan College of Medicine and Surgery in 1993.
What drugs does Dr. Weldon John Mallgren prescribe most?
In 2024 Medicare Part D data, Dr. Mallgren's most prescribed drugs by claims were Clonazepam, Quetiapine Fumarate and Lamotrigine.
Has Dr. Weldon John Mallgren received payments from drug or device companies?
CMS Open Payments shows $1,623 in general payments to Dr. Mallgren from 14 companies from 2016 to 2025. The largest total came from Alkermes, Inc.
How long has Dr. Weldon John Mallgren been practicing?
Dr. Mallgren graduated from medical school in 1993, 33 years ago.
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