Dr. Gregory M. Decker, MD

  • Saint Louis, MO
  • Physiatrist
NPI1437564614PAC ID0345460747
Medicare services, 2024
2,767
Medicare patients, 2024
475
Part D claims, 2024
761
Publications
8
MIPS score, 2024
84
Practice address
One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
Practice phone
Call (314) 747-3000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Barnes-Jewish Hospital

Hospital · Saint Louis, Missouri

See all 8 affiliations

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Dr. Gregory M. Decker is a physiatrist in Saint Louis, Missouri

Dr. Decker practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.

Dr. Decker's NPI, 1437564614, was assigned on June 25, 2014. Dr. Decker holds Missouri license 2019017094.

NPI and contact details
Medicare PAC ID
0345460747
NPI enumeration date
June 25, 2014
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(314) 747-3000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
38
Medical school graduation
2014

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

Dr. Gregory M. Decker practices at 2 locations in Saint Louis, Missouri

Dr. Decker's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Decker also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.

  • Barnes-Jewish HospitalPrimary
    One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
  • Barnes-Jewish Hospital
    1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000

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

Dr. Gregory M. Decker is affiliated with 7 sites of care and 1 medical group

Dr. Decker's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. Decker is also affiliated with Missouri Baptist Medical Center. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Decker to 4 more hospitals and 1 group practice or clinic, each named with a free account.

See all 8 affiliations for Dr. Decker

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

Dmand AI tracks the EHR system at Dr. Gregory M. Decker's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Decker practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Barnes-Jewish HospitalAvailable with a free account
+6 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Gregory M. Decker is one of 190 physiatrists in Missouri

Physical medicine and rehabilitation is Dr. Decker's primary specialty in the NPI Registry, under taxonomy code 208100000X. Dr. Decker is licensed in Missouri.

Specialties and state licenses

  • Physical medicine and rehabilitation, MissouriPrimaryLicense 2019017094 · taxonomy 208100000X

Physiatrists near Dr. Decker

Counts of physiatrists 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. Gregory M. Decker billed Medicare for 2,767 services in 2024

CMS data shows 2,767 Medicare services from Dr. Decker across 21 procedure codes in 2024, for 475 Medicare patients. Medicare paid $86,607 for them. Every service was in an office.

Medicare services, 20242,767
Medicare patients475
Paid by Medicare$86,607
Procedure codes21

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

  • 2023
  • 2024
Drugs given in the office
2023: 2,0802024: 1,69618%
Surgery
2023: 6302024: 54813%
Office and hospital visits
2023: 4152024: 4447%
Imaging
2023: 882024: 7910%

Dr. Decker compared with the Missouri median for physiatrists, 2024

  • Dr. Decker
  • Missouri median
Medicare services
2,767vs 8713.2 times
Medicare patients
475vs 2192.2 times
Part D claims
688vs 1126.1 times

Medians across 179 physiatrists in Missouri with Dmand AI profiles that report each measure.

Dr. Decker'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. Decker

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

Dr. Gregory M. Decker treated 475 Medicare patients in 2024, average age 74

CMS counts 475 Medicare patients who saw Dr. Decker in 2024. The largest group is 65 to 74, with 237 patients. 75% of them have arthritis, and 75% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Decker's median patient age at 64, with 59% women.

Medicare patients, 2024475
Average age74
Average risk score1.27
Also on Medicaid6%

Dr. Decker's Medicare patients by age, 2024

Dr. Decker's Medicare patients by sex, 2024

  • Women29963%
  • Men17637%

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

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol69%
  4. Mood disorders32%
  5. Anxiety28%
  6. Depression28%
  7. Diabetes26%
  8. Ischemic heart disease25%

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

Dr. Decker's patients across all payers

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

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women59%
  • Men41%

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

Dr. Gregory M. Decker wrote 761 Medicare Part D claims in 2024

In 2024, Dr. Decker wrote 761 Medicare Part D claims for 241 patients. 100% of them were for generic drugs. CMS names the drug for 688 of them, across 9 drugs with 11 or more claims each, at $7,412 in total drug cost. In 2023, CMS named 518 claims across 8 drugs.

Part D claims, 2024761
Drugs named by CMS9
Total drug cost$7,412
Part D patients241

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

  • Generic760 claims100%
  • Brand-name and other1 claims0%

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

  • Opioids18%137 of 761 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: 5182024: 68833%

Drugs named by CMS: 9 in 2024, 8 in 2023.

See all prescribing by Dr. Decker

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. Gregory M. Decker scored 84 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Decker for performance year 2024, reported as part of a group. Dr. Decker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Decker's MIPS scores, performance year 2024

  • 84of 100Final score
  • 71.6of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 76of 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. Gregory M. Decker has 8 publications on record

Dmand AI links 8 papers to Dr. Decker, published from 2016 to 2023. 2019 was the busiest year, with 3. The most frequent topics are Magnetic Resonance Imaging. Dr. Decker has published most often in PM R. Dr. Decker's most frequent co-authors are Devyani Mehta Hunt, MD, Abby Ling-Lee Cheng, MD and Berdale Sabado Colorado, DO.

Papers8
Years published2016 to 2023

Dr. Decker's papers by year, 2016 to 2023

Topics Dr. Decker writes about most

  • Magnetic Resonance Imaging

Dr. Decker's most frequent co-authors

Recent publications by Dr. Decker

See all 8 publications and co-authors

See who Dr. Decker researches with

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

How network discovery works

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

Dr. Gregory M. Decker received $4,663 in industry payments from 2016 to 2025

CMS Open Payments shows 55 general payments to Dr. Decker from 8 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 51% of the total. Nevro Corp. paid the most, $1,944.

General payments to Dr. Decker by program year, 2016 to 2025

General payments to Dr. Decker by kind, 2016 to 2025

$4.7Kin total
  • Travel and lodging$2,37051%
  • Food and beverage$2,29449%

Companies that paid Dr. Decker the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Decker

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

Sources for Dr. Gregory M. Decker'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 Affiliation DataDmand AI Practice 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)
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. Gregory M. Decker

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. Gregory M. Decker's NPI number?

Dr. Gregory M. Decker's NPI number is 1437564614. It was assigned on June 25, 2014, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregory M. Decker?

Dr. Gregory M. Decker is a physiatrist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Physical Medicine & Rehabilitation Physician (taxonomy code 208100000X).

Where does Dr. Gregory M. Decker practice?

Dr. Decker practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Decker also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Decker's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dmand AI also links Dr. Decker to 4 hospitals and 1 group practice or clinic.

What is Dr. Gregory M. Decker's office phone number?

The practice phone on file for Dr. Decker is (314) 747-3000.

What is Dr. Gregory M. Decker's medical license number?

Dr. Decker holds Missouri license 2019017094.

Which hospitals is Dr. Gregory M. Decker affiliated with?

Dr. Decker practices at Barnes-Jewish Hospital in Saint Louis, Missouri. Dr. Decker is also affiliated with Missouri Baptist Medical Center. Dmand AI links Dr. Decker to 4 more hospitals.

What medical group is Dr. Gregory M. Decker part of?

Dr. Decker is linked to WashU Medicine Psychiatry.

Does Dr. Gregory M. Decker accept Medicare?

Yes. CMS data shows Dr. Decker billed Medicare for 2,767 services in 2024, and Dr. Decker accepts Medicare assignment.

What is Dr. Gregory M. Decker's MIPS score?

Dr. Decker's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.

How many Medicare patients does Dr. Gregory M. Decker see?

CMS counts 475 Medicare patients who saw Dr. Decker in 2024, with an average age of 74.

Show 6 more questionsShow fewer questions

What services does Dr. Gregory M. Decker bill to Medicare?

In 2024, Dr. Decker's most billed Medicare services were injected or infused drug (J7325), injected or infused drug (J3301) and office visit, established patient (99214).

What drugs does Dr. Gregory M. Decker prescribe most?

In 2024 Medicare Part D data, Dr. Decker's most prescribed drugs by claims were Gabapentin, Meloxicam and Pregabalin.

Has Dr. Gregory M. Decker received payments from drug or device companies?

CMS Open Payments shows $4,663 in general payments to Dr. Decker from 8 companies from 2016 to 2025. The largest total came from Nevro Corp.

How long has Dr. Gregory M. Decker been practicing?

Dr. Decker graduated from medical school in 2014, 12 years ago.

Does Dr. Gregory M. Decker do research?

Dmand AI links 8 publications to Dr. Decker, published from 2016 to 2023.

Who does Dr. Gregory M. Decker publish with?

Dr. Decker's most frequent co-authors are Devyani Mehta Hunt, MD (2 shared papers), Abby Ling-Lee Cheng, MD (1 shared paper) and Berdale Sabado Colorado, DO (1 shared paper).

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