Maureen Bastien Petersen

  • Billings, MT
  • Emergency medicine physician
NPI1467911784PAC ID7315306636
Medicare services, 2024
247
Medicare patients, 2024
237
Part D claims, 2024
135
Hospital affiliations
4
Industry payments
$29
Practice address
1233 N 30th St, Billings, MT 59101
Practice phone
Call (406) 237-7000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

St Vincent Healthcare

Billings, Montana

See all 10 affiliations

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Maureen Bastien Petersen is an emergency medicine physician in Billings, Montana

Maureen Petersen practices at St Vincent Healthcare in Billings, Montana.

Maureen Petersen's NPI, 1467911784, was assigned on March 16, 2019. Maureen Petersen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2021. Maureen Petersen holds California license 20A20419.

NPI and contact details
Medicare PAC ID
7315306636
NPI enumeration date
March 16, 2019
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(406) 237-7000
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
31
Medical school graduation
2021

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Maureen Bastien Petersen practices at St Vincent Healthcare in Billings, Montana

Maureen Petersen's primary practice is St Vincent Healthcare, at 1233 N 30th St, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 237-7000.

  • St Vincent Healthcare
    1233 N 30th St, Billings, MT 59101 · Yellowstone CountyPhone(406) 237-7000

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Maureen Bastien Petersen is affiliated with 5 sites of care and 5 medical groups

Maureen Petersen's primary practice is St Vincent Healthcare in Billings, Montana. Maureen Petersen is also affiliated with St. Vincent Regional Hospital. The medical group on file is SCL Health Medical Group. Dmand AI also links Maureen Petersen to 3 more hospitals and 4 medical groups, each named with a free account.

See all 10 affiliations for Maureen Petersen

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Maureen Bastien Petersen's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Maureen Petersen practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
St Vincent HealthcareAvailable with a free account
+4 more sites and 4 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Maureen Bastien Petersen is one of 245 emergency medicine physicians in Montana

Emergency medicine is Maureen Petersen's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Maureen Petersen's licenses on file in 2 states: California and Montana.

Specialties and state licenses

  • Emergency medicine, CaliforniaPrimaryLicense 20A20419 · 2022 to 2026 · taxonomy 207P00000X
  • Montana license2024 to 2026

Emergency medicine physicians near Maureen Petersen

Counts of emergency medicine physicians 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

Maureen Bastien Petersen billed Medicare for 247 services in 2024

CMS data shows 247 Medicare services from Maureen Petersen across 4 procedure codes in 2024, for 237 Medicare patients. Medicare paid $26,646 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024247
Medicare patients237
Paid by Medicare$26,646
Procedure codes4

Maureen Petersen's Medicare services by type, 2024

  1. Office and hospital visits235
  2. Tests and treatments12

Maureen Petersen compared with the Montana median for emergency medicine physicians, 2024

  • Maureen Petersen
  • Montana median
Medicare services
247vs 30419% below
Medicare patients
237vs 30222% below
Part D claims
40vs 4511% below

Medians across 269 emergency medicine physicians in Montana with Dmand AI profiles that report each measure.

Maureen Petersen'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.

See all procedures by Maureen Petersen

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Maureen Bastien Petersen treated 237 Medicare patients in 2024, average age 74

CMS counts 237 Medicare patients who saw Maureen Petersen in 2024. The largest group is 65 to 74, with 82 patients. 75% of them have high blood pressure, and 65% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Maureen Petersen's median patient age at 71, with 63% women.

Medicare patients, 2024237
Average age74
Average risk score1.71
Also on Medicaid18%

Maureen Petersen's Medicare patients by age, 2024

Maureen Petersen's Medicare patients by sex, 2024

  • Women12151%
  • Men11649%

Chronic conditions among Maureen Petersen's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol65%
  3. Arthritis53%
  4. Anxiety41%
  5. Ischemic heart disease41%
  6. Mood disorders41%
  7. Depression39%
  8. Diabetes37%

Share of Medicare patients with each condition. A patient can have several.

Maureen Petersen's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women63%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Maureen Bastien Petersen wrote 135 Medicare Part D claims in 2024

In 2024, Maureen Petersen wrote 135 Medicare Part D claims for 110 patients. 95% of them were for generic drugs. CMS names the drug for 40 of them, across 2 drugs with 11 or more claims each, at $223 in total drug cost. In 2023, CMS named 25 claims across 1 drug.

Part D claims, 2024135
Drugs named by CMS2
Total drug cost$223
Part D patients110

Maureen Petersen's Part D claims by kind of drug, 2024

  • Generic128 claims95%
  • Brand-name and other7 claims5%

Maureen Petersen'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 Maureen Petersen's Part D claims, 2024

  • Opioids13%17 of 135 claims
  • Antibiotics44%60 of 135 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: 252024: 4060%

Drugs named by CMS: 2 in 2024, 1 in 2023.

See all prescribing by Maureen Petersen

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 Maureen Bastien Petersen takes part in Medicare

Maureen Petersen 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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Maureen Bastien Petersen received $29 in industry payments in 2024

CMS Open Payments shows 1 general payment to Maureen Petersen from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Philips Electronics North America Corporation paid the most, $29.

Companies that paid Maureen Petersen the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to Maureen Petersen

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Maureen Bastien Petersen graduated from WesternU College of Osteopathic Medicine of the Pacific

Maureen Petersen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2021.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific

Source: Dmand AI Professional Profile Data

Maureen Bastien Petersen accepts plans from 15 insurance carriers

Maureen Petersen is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • Regence Health Plans
  • +7 more carriersWith a free account

Plan types Maureen Petersen accepts, by number of carriers

  1. PPO10
  2. Medicare8
  3. HMO6
  4. EPO4
  5. POS4

Source: Dmand AI Insurance Network Data

Sources for Maureen Bastien Petersen's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Maureen Bastien Petersen

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Maureen Bastien Petersen's NPI number?

Maureen Bastien Petersen's NPI number is 1467911784. It was assigned on March 16, 2019, and it is active in the NPI Registry.

What does Maureen Bastien Petersen specialize in?

Maureen Bastien Petersen is an emergency medicine physician in Billings, Montana. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Maureen Bastien Petersen practice?

Maureen Petersen practices at 1233 N 30th St, Billings, MT 59101. Maureen Petersen's primary practice is St Vincent Healthcare in Billings, Montana. Dmand AI also links Maureen Petersen to 3 hospitals and 4 medical groups.

What is Maureen Bastien Petersen's office phone number?

The practice phone on file for Maureen Petersen is (406) 237-7000.

What is Maureen Bastien Petersen's medical license number?

Maureen Petersen holds California license 20A20419, one of the licenses on file in 2 states.

Which states has Maureen Bastien Petersen been licensed in?

Dmand AI has state licenses on file for Maureen Petersen in California (2022 to 2026) and Montana (2024 to 2026).

Which hospitals is Maureen Bastien Petersen affiliated with?

Maureen Petersen is affiliated with St. Vincent Regional Hospital. Dmand AI links Maureen Petersen to 3 more hospitals.

What medical group is Maureen Bastien Petersen part of?

Maureen Petersen is linked to SCL Health Medical Group. Dmand AI links Maureen Petersen to 4 more medical groups.

Does Maureen Bastien Petersen accept Medicare?

Yes. CMS data shows Maureen Petersen billed Medicare for 247 services in 2024, and Maureen Petersen accepts Medicare assignment.

How many Medicare patients does Maureen Bastien Petersen see?

CMS counts 237 Medicare patients who saw Maureen Petersen in 2024, with an average age of 74.

Show 6 more questionsShow fewer questions

What services does Maureen Bastien Petersen bill to Medicare?

In 2024, Maureen Petersen's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).

Where did Maureen Bastien Petersen go to medical school?

Maureen Petersen graduated from WesternU College of Osteopathic Medicine of the Pacific in 2021.

What drugs does Maureen Bastien Petersen prescribe most?

In 2024 Medicare Part D data, Maureen Petersen's most prescribed drugs by claims were Cephalexin and Hydrocodone-Acetaminophen.

Has Maureen Bastien Petersen received payments from drug or device companies?

CMS Open Payments shows $29 in general payments to Maureen Petersen from 1 company from 2024 to 2024. The largest total came from Philips Electronics North America Corporation.

How long has Maureen Bastien Petersen been practicing?

Maureen Petersen graduated from medical school in 2021, 5 years ago.

What insurance does Maureen Bastien Petersen accept?

Maureen Petersen is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

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