Dr. James O'Brien, MD
- Medicare services, 2024
- 104
- Medicare patients, 2024
- 43
- Part D claims, 2024
- 945
- Hospital affiliations
- 1
- Industry payments
- $23
- Practice address
- 1721 S Stephenson Ave, Iron Mountain, MI 49801
- Practice phone
- Call (906) 774-1313
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Brien'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. James O'Brien is a psychiatrist in Iron Mountain, Michigan
Dr. O'Brien practices at Marshfield Medical Center - Dickinson in Iron Mountain, Michigan, part of Sanford Health.
Dr. O'Brien's NPI, 1447871983, was assigned on May 6, 2020. Dr. O'Brien graduated from Michigan State University College of Human Medicine in 2020. Dr. O'Brien holds Michigan license 4301507575.
- NPI
- 1447871983NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345617239
- NPI enumeration date
- May 6, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (906) 774-1313
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James O'Brien practices at Marshfield Medical Center - Dickinson in Iron Mountain, Michigan
Dr. O'Brien's primary practice is Marshfield Medical Center - Dickinson, at 1721 S Stephenson Ave, Iron Mountain, MI 49801 in Dickinson County. The practice phone is (906) 774-1313.
- Marshfield Medical Center - Dickinson1721 S Stephenson Ave, Iron Mountain, MI 49801 · Dickinson CountyPhone(906) 774-1313
Source: Dmand AI Affiliation Data
Dr. James O'Brien is affiliated with 1 site of care and 2 medical groups
Dr. O'Brien's primary practice is Marshfield Medical Center - Dickinson in Iron Mountain, Michigan, part of Sanford Health. The medical group on file is Marshfield Medical Center - Dickinson. Dmand AI also links Dr. O'Brien to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marshfield Medical Center - Dickinson | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James O'Brien is one of 1,337 psychiatrists in Michigan
Psychiatry is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. O'Brien is licensed in Michigan.
Specialties and state licenses
- Psychiatry, MichiganPrimary
Psychiatrists near Dr. O'Brien
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. James O'Brien billed Medicare for 104 services in 2024
CMS data shows 104 Medicare services from Dr. O'Brien across 2 procedure codes in 2024, for 43 Medicare patients. Medicare paid $3,225 for them. Every service was in an office.
Dr. O'Brien's Medicare services by type, 2024
- Tests and treatments75
- Office and hospital visits29
Dr. O'Brien compared with the Michigan median for psychiatrists, 2024
- Dr. O'Brien
- Michigan median
- Medicare services
- 104vs 14729% below
- Medicare patients
- 43vs 4810% below
- Part D claims
- 694vs 2153.2 times
Medians across 1,367 psychiatrists in Michigan with Dmand AI profiles that report each measure.
Dr. O'Brien's most billed Medicare procedure codes, 2024
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. James O'Brien treated 43 Medicare patients in 2024, average age 49
CMS counts 43 Medicare patients who saw Dr. O'Brien in 2024. 74% of them have schizophrenia and other psychoses, and 60% have anxiety. Their average risk score is 1.55, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 45, with 58% women.
Dr. O'Brien's Medicare patients by sex, 2024
- Women1433%
- Men2967%
Chronic conditions among Dr. O'Brien's Medicare patients, 2024
- Schizophrenia and other psychoses74%
- Anxiety60%
- Mood disorders56%
- Alcohol and drug use disorders53%
- Bipolar disorder37%
- Personality disorders37%
- Tobacco use37%
- High blood pressure33%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James O'Brien wrote 945 Medicare Part D claims in 2024
In 2024, Dr. O'Brien wrote 945 Medicare Part D claims for 103 patients. 90% of them were for generic drugs. CMS names the drug for 694 of them, across 27 drugs with 11 or more claims each, at $138,346 in total drug cost. In 2023, CMS named 71 claims across 5 drugs.
Dr. O'Brien's Part D claims by kind of drug, 2024
- Generic846 claims90%
- Brand-name99 claims10%
Dr. O'Brien'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. O'Brien's Part D claims, 2024
- Antipsychotics, patients 65 and over10%96 of 945 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: 712024: 694877%
Drugs named by CMS: 27 in 2024, 5 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. James O'Brien takes part in Medicare
Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. James O'Brien received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. O'Brien from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $23.
Companies that paid Dr. O'Brien 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. James O'Brien graduated from Michigan State University College of Human Medicine
Dr. O'Brien graduated from Michigan State University College of Human Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James O'Brien'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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. James O'Brien
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. James O'Brien's NPI number?
Dr. James O'Brien's NPI number is 1447871983. It was assigned on May 6, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. James O'Brien?
Dr. James O'Brien is a psychiatrist in Iron Mountain, Michigan. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. James O'Brien practice?
Dr. O'Brien practices at 1721 S Stephenson Ave, Iron Mountain, MI 49801. Dr. O'Brien's primary practice is Marshfield Medical Center - Dickinson in Iron Mountain, Michigan, part of Sanford Health. Dmand AI also links Dr. O'Brien to 1 medical group.
What is Dr. James O'Brien's office phone number?
The practice phone on file for Dr. O'Brien is (906) 774-1313.
What is Dr. James O'Brien's medical license number?
Dr. O'Brien holds Michigan license 4301507575.
Which hospitals is Dr. James O'Brien affiliated with?
Dr. O'Brien practices at Marshfield Medical Center - Dickinson in Iron Mountain, Michigan.
What medical group is Dr. James O'Brien part of?
Dr. O'Brien is linked to Marshfield Medical Center - Dickinson. Dmand AI links Dr. O'Brien to 1 more medical group.
Does Dr. James O'Brien accept Medicare?
Yes. CMS data shows Dr. O'Brien billed Medicare for 104 services in 2024, and Dr. O'Brien accepts Medicare assignment.
How many Medicare patients does Dr. James O'Brien see?
CMS counts 43 Medicare patients who saw Dr. O'Brien in 2024, with an average age of 49.
What services does Dr. James O'Brien bill to Medicare?
In 2024, Dr. O'Brien's most billed Medicare services were infusion or chemotherapy administration (96372) and office visit, established patient (99214).
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Where did Dr. James O'Brien go to medical school?
Dr. O'Brien graduated from Michigan State University College of Human Medicine in 2020.
What drugs does Dr. James O'Brien prescribe most?
In 2024 Medicare Part D data, Dr. O'Brien's most prescribed drugs by claims were Olanzapine, Quetiapine Fumarate and Lamotrigine.
Has Dr. James O'Brien received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. O'Brien from 1 company from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Dr. James O'Brien been practicing?
Dr. O'Brien graduated from medical school in 2020, 6 years ago.
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