Dr. Matthew Aaron Parker, MD

  • Saint Joseph, MO
  • Hospitalist
NPI1558537522PAC ID5294912671
Medicare services, 2024
1,367
Medicare patients, 2024
355
Part D claims, 2024
281
Publications
2
MIPS score, 2024
85
Practice address
5325 Faraon Street, Saint Joseph, MO 64506
Practice phone
Call (816) 271-6000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Mosaic Life Care at St. Joseph - Medical Center

Hospital · Saint Joseph, Missouri

See all 5 affiliations

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Dr. Matthew Aaron Parker is a hospitalist in Saint Joseph, Missouri

Dr. Parker practices at Mosaic Life Care at St. Joseph - Medical Center in Saint Joseph, Missouri, part of Mosaic Life Care.

Dr. Parker's NPI, 1558537522, was assigned on April 30, 2008. Dr. Parker graduated from University of Missouri, Kansas City, School of Medicine in 2008. Dr. Parker holds Missouri license 2013036517.

NPI and contact details
Medicare PAC ID
5294912671
NPI enumeration date
April 30, 2008
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(816) 271-6000
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
44
Medical school graduation
2008

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

Dr. Matthew Aaron Parker practices at Mosaic Life Care at St. Joseph - Medical Center in Saint Joseph, Missouri

Dr. Parker's primary practice is Mosaic Life Care at St. Joseph - Medical Center, at 5325 Faraon Street, Saint Joseph, MO 64506 in Buchanan County. The practice phone is (816) 271-6000.

Source: Dmand AI Affiliation Data

Dr. Matthew Aaron Parker is affiliated with 2 sites of care and 3 medical groups

Dr. Parker's primary practice is Mosaic Life Care at St. Joseph - Medical Center in Saint Joseph, Missouri, part of Mosaic Life Care. Dr. Parker is also affiliated with Mosaic Medical Center - Maryville. The medical group on file is Mosaic Life Care at St. Joseph - Medical Center. Dmand AI also links Dr. Parker to 2 more medical groups, each named with a free account.

See all 5 affiliations for Dr. Parker

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Matthew Aaron Parker's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parker practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mosaic Life Care at St. Joseph - Medical CenterAvailable with a free account
+1 more site and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Matthew Aaron Parker is one of 735 hospitalists in Missouri

Hospitalist is Dr. Parker's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Parker's licenses on file in 2 states: Missouri and Indiana.

Specialties and state licenses

  • Hospitalist, MissouriPrimaryLicense 2013036517 · taxonomy 208M00000X
  • Indiana licenseLicense 01069584A

Hospitalists near Dr. Parker

Counts of hospitalists 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. Matthew Aaron Parker billed Medicare for 1,367 services in 2024

CMS data shows 1,367 Medicare services from Dr. Parker across 5 procedure codes in 2024, for 355 Medicare patients. Medicare paid $78,658 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,367
Medicare patients355
Paid by Medicare$78,658
Procedure codes5

Dr. Parker's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,1292024: 1,36721%

Dr. Parker compared with the Missouri median for hospitalists, 2024

  • Dr. Parker
  • Missouri median
Medicare services
1,367vs 4343.1 times
Medicare patients
355vs 19186% above
Part D claims
104vs 986% above

Medians across 659 hospitalists in Missouri with Dmand AI profiles that report each measure.

Dr. Parker'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 Dr. Parker

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

Dr. Matthew Aaron Parker treated 355 Medicare patients in 2024, average age 76

CMS counts 355 Medicare patients who saw Dr. Parker in 2024. The largest group is 75 to 84, with 139 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.24, 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. Parker's median patient age at 75, with 53% women.

Medicare patients, 2024355
Average age76
Average risk score2.24
Also on Medicaid25%

Dr. Parker's Medicare patients by age, 2024

Dr. Parker's Medicare patients by sex, 2024

  • Women20758%
  • Men14842%

Chronic conditions among Dr. Parker's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis53%
  4. Ischemic heart disease50%
  5. COPD46%
  6. Diabetes46%
  7. Anxiety45%
  8. Chronic kidney disease44%

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

Dr. Parker's patients across all payers

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

Patient panel by age, all payers

Median age 75

Patient panel by sex, all payers

  • Women53%
  • Men47%

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

Dr. Matthew Aaron Parker wrote 281 Medicare Part D claims in 2024

In 2024, Dr. Parker wrote 281 Medicare Part D claims for 140 patients. 85% of them were for generic drugs. CMS names the drug for 104 of them, across 6 drugs with 11 or more claims each, at $2,165 in total drug cost. In 2023, CMS named 167 claims across 9 drugs.

Part D claims, 2024281
Drugs named by CMS6
Total drug cost$2,165
Part D patients140

Dr. Parker's Part D claims by kind of drug, 2024

  • Generic238 claims85%
  • Brand-name30 claims11%
  • Other13 claims5%

Dr. Parker'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. Parker's Part D claims, 2024

  • Opioids9%24 of 281 claims
  • Antibiotics25%70 of 281 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: 1672024: 10438%

Drugs named by CMS: 6 in 2024, 9 in 2023.

See all prescribing by Dr. Parker

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. Matthew Aaron Parker scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Parker for performance year 2024, reported as part of a group. Dr. Parker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Parker's MIPS scores, performance year 2024

  • 85of 100Final score
  • 74.3of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 75of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Matthew Aaron Parker has 2 publications on record

Dmand AI links 2 papers to Dr. Parker in 2014. Dr. Parker's most frequent co-author is Joseph Yeboah, MD.

Papers2

Dr. Parker's most frequent co-authors

Recent publications by Dr. Parker

See all 2 publications and co-authors

See who Dr. Parker researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Parker works with, so you can find a warm path to the right hospitalists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Matthew Aaron Parker received $457 in industry payments from 2017 to 2025

CMS Open Payments shows 25 general payments to Dr. Parker from 10 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $117.

General payments to Dr. Parker by program year, 2017 to 2025

Companies that paid Dr. Parker the most, 2017 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Parker

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

Dr. Matthew Aaron Parker graduated from University of Missouri, Kansas City, School of Medicine

Dr. Parker graduated from University of Missouri, Kansas City, School of Medicine in 2008.

  1. Medical schoolUniversity of Missouri, Kansas City, School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Matthew Aaron Parker'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile 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 Dr. Matthew Aaron Parker

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. Matthew Aaron Parker's NPI number?

Dr. Matthew Aaron Parker's NPI number is 1558537522. It was assigned on April 30, 2008, and it is active in the NPI Registry.

What kind of doctor is Dr. Matthew Aaron Parker?

Dr. Matthew Aaron Parker is a hospitalist in Saint Joseph, Missouri. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).

Where does Dr. Matthew Aaron Parker practice?

Dr. Parker practices at 5325 Faraon Street, Saint Joseph, MO 64506. Dr. Parker's primary practice is Mosaic Life Care at St. Joseph - Medical Center in Saint Joseph, Missouri, part of Mosaic Life Care. Dmand AI also links Dr. Parker to 2 medical groups.

What is Dr. Matthew Aaron Parker's office phone number?

The practice phone on file for Dr. Parker is (816) 271-6000.

What is Dr. Matthew Aaron Parker's medical license number?

Dr. Parker holds Missouri license 2013036517, one of the licenses on file in 2 states.

Which states has Dr. Matthew Aaron Parker been licensed in?

Dmand AI has state licenses on file for Dr. Parker in Missouri and Indiana.

Which hospitals is Dr. Matthew Aaron Parker affiliated with?

Dr. Parker practices at Mosaic Life Care at St. Joseph - Medical Center in Saint Joseph, Missouri. Dr. Parker is also affiliated with Mosaic Medical Center - Maryville.

What medical group is Dr. Matthew Aaron Parker part of?

Dr. Parker is linked to Mosaic Life Care at St. Joseph - Medical Center. Dmand AI links Dr. Parker to 2 more medical groups.

Does Dr. Matthew Aaron Parker accept Medicare?

Yes. CMS data shows Dr. Parker billed Medicare for 1,367 services in 2024, and Dr. Parker accepts Medicare assignment.

What is Dr. Matthew Aaron Parker's MIPS score?

Dr. Parker's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Matthew Aaron Parker see?

CMS counts 355 Medicare patients who saw Dr. Parker in 2024, with an average age of 76.

What services does Dr. Matthew Aaron Parker bill to Medicare?

In 2024, Dr. Parker's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99238) and hospital inpatient care (99231).

Where did Dr. Matthew Aaron Parker go to medical school?

Dr. Parker graduated from University of Missouri, Kansas City, School of Medicine in 2008.

What drugs does Dr. Matthew Aaron Parker prescribe most?

In 2024 Medicare Part D data, Dr. Parker's most prescribed drugs by claims were Prednisone, Amoxicillin-Clavulanate Potass and Autoshield Duo Pen Needle.

Has Dr. Matthew Aaron Parker received payments from drug or device companies?

CMS Open Payments shows $457 in general payments to Dr. Parker from 10 companies from 2017 to 2025. The largest total came from Abbvie Inc.

How long has Dr. Matthew Aaron Parker been practicing?

Dr. Parker graduated from medical school in 2008, 18 years ago.

Does Dr. Matthew Aaron Parker do research?

Dmand AI links 2 publications to Dr. Parker.

Who does Dr. Matthew Aaron Parker publish with?

Dr. Parker's most frequent co-authors are Joseph Yeboah, MD (1 shared paper).

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