Dr. Mark E. Obrien, MD
- Medicare services, 2024
- 147
- Medicare patients, 2024
- 93
- Part D claims, 2024
- 9,932
- Hospital affiliations
- 2
- Industry payments
- $456
- Practice address
- 50 Industrial Park Drive, Bangor, MI 49013
- Practice phone
- Call (616) 236-6330
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pullman Health Center
FQHC - Main Site · Bangor, Michigan
Find Dr. Obrien'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. Mark E. Obrien is an internist in Bangor, Michigan
Dr. Obrien practices at Pullman Health Center in Bangor, Michigan.
Dr. Obrien's NPI, 1841221348, was assigned on July 5, 2006. Dr. Obrien graduated from University of Michigan Medical School in 1984. Dr. Obrien holds Michigan license 4301080677.
- NPI
- 1841221348NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355237975
- NPI enumeration date
- July 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 236-6330
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Obrien practices at Pullman Health Center in Bangor, Michigan
Dr. Obrien's primary practice is Pullman Health Center, at 50 Industrial Park Drive, Bangor, MI 49013 in Allegan County. The practice phone is (616) 236-6330.
- Pullman Health Center50 Industrial Park Drive, Bangor, MI 49013 · Allegan CountyPhone(616) 236-6330
Source: Dmand AI Affiliation Data
Dr. Mark E. Obrien is affiliated with 5 sites of care and 1 medical group
Dr. Obrien's primary practice is Pullman Health Center in Bangor, Michigan. Dr. Obrien is also affiliated with IU Health Methodist Hospital. The medical group on file is InterCare Community Health Network. Dmand AI also links Dr. Obrien to 1 more hospital, 1 community health center and 1 home health agency, each named with a free account. Dr. Obrien's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark E. Obrien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Obrien practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pullman Health Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark E. Obrien is one of 4,804 internists in Michigan
Internal medicine is Dr. Obrien's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Obrien is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Obrien
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. Mark E. Obrien billed Medicare for 147 services in 2024
CMS data shows 147 Medicare services from Dr. Obrien across 2 procedure codes in 2024, for 93 Medicare patients. Medicare paid $1,283 for them. Every service was in an office.
Dr. Obrien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1522024: 1473%
Dr. Obrien compared with the Michigan median for internists, 2024
- Dr. Obrien
- Michigan median
- Medicare services
- 147vs 42365% below
- Medicare patients
- 93vs 15942% below
- Part D claims
- 9,298vs 31429.6 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Obrien'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.
Need commercial claims for Dr. Obrien?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Obrien and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark E. Obrien treated 93 Medicare patients in 2024, average age 66
CMS counts 93 Medicare patients who saw Dr. Obrien in 2024. The largest group is 65 to 74, with 39 patients. 75% of them have high blood pressure, and 72% have diabetes. 56% are also on Medicaid. Their average risk score is 1.51, 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. Obrien's median patient age at 46, with 55% women.
Dr. Obrien's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Obrien's Medicare patients by sex, 2024
- Women4245%
- Men5155%
Chronic conditions among Dr. Obrien's Medicare patients, 2024
- High blood pressure75%
- Diabetes72%
- High cholesterol44%
- Arthritis34%
- Chronic kidney disease25%
- Tobacco use25%
- Mood disorders18%
- COPD17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Obrien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark E. Obrien wrote 9,932 Medicare Part D claims in 2024
In 2024, Dr. Obrien wrote 9,932 Medicare Part D claims for 638 patients. 87% of them were for generic drugs. CMS names the drug for 9,298 of them, across 123 drugs with 11 or more claims each, at $404,916 in total drug cost. In 2023, CMS named 9,096 claims across 131 drugs.
Dr. Obrien's Part D claims by kind of drug, 2024
- Generic8,671 claims87%
- Brand-name1,157 claims12%
- Other104 claims1%
Dr. Obrien'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. Obrien's Part D claims, 2024
- Opioids6%645 of 9,932 claims
- Antibiotics1%126 of 9,932 claims
- Antipsychotics, patients 65 and over1%107 of 9,932 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: 9,0962024: 9,2982%
Drugs named by CMS: 123 in 2024, 131 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. Mark E. Obrien takes part in Medicare
Dr. Obrien 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. Mark E. Obrien received $456 in industry payments from 2016 to 2025
CMS Open Payments shows 27 general payments to Dr. Obrien from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $216.
General payments to Dr. Obrien by program year, 2016 to 2025
Companies that paid Dr. Obrien 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. Mark E. Obrien graduated from University of Michigan Medical School
Dr. Obrien graduated from University of Michigan Medical School in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark E. Obrien'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. Mark E. Obrien
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. Mark E. Obrien's NPI number?
Dr. Mark E. Obrien's NPI number is 1841221348. It was assigned on July 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark E. Obrien?
Dr. Mark E. Obrien is an internist in Bangor, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark E. Obrien practice?
Dr. Obrien practices at 50 Industrial Park Drive, Bangor, MI 49013. Dr. Obrien's primary practice is Pullman Health Center in Bangor, Michigan. Dmand AI also links Dr. Obrien to 1 hospital, 1 community health center and 1 home health agency.
What is Dr. Mark E. Obrien's office phone number?
The practice phone on file for Dr. Obrien is (616) 236-6330.
What is Dr. Mark E. Obrien's medical license number?
Dr. Obrien holds Michigan license 4301080677.
Which hospitals is Dr. Mark E. Obrien affiliated with?
Dr. Obrien is affiliated with IU Health Methodist Hospital. Dmand AI links Dr. Obrien to 1 more hospital.
What medical group is Dr. Mark E. Obrien part of?
Dr. Obrien is linked to InterCare Community Health Network.
Does Dr. Mark E. Obrien accept Medicare?
Yes. CMS data shows Dr. Obrien billed Medicare for 147 services in 2024, and Dr. Obrien accepts Medicare assignment.
How many Medicare patients does Dr. Mark E. Obrien see?
CMS counts 93 Medicare patients who saw Dr. Obrien in 2024, with an average age of 66.
What services does Dr. Mark E. Obrien bill to Medicare?
In 2024, Dr. Obrien's most billed Medicare services were lab and pathology test (83036) and lab and pathology test (81002).
Show 4 more questionsShow fewer questions
Where did Dr. Mark E. Obrien go to medical school?
Dr. Obrien graduated from University of Michigan Medical School in 1984.
What drugs does Dr. Mark E. Obrien prescribe most?
In 2024 Medicare Part D data, Dr. Obrien's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Hydrocodone-Acetaminophen.
Has Dr. Mark E. Obrien received payments from drug or device companies?
CMS Open Payments shows $456 in general payments to Dr. Obrien from 12 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Mark E. Obrien been practicing?
Dr. Obrien graduated from medical school in 1984, 42 years ago.
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