Dr. David Gregory True, DO
- Medicare services, 2023
- 24,070
- Part D claims, 2024
- 349
- Publications
- 2
- Clinical trials
- 20
- Industry payments
- $63,548
- Practice address
- 909 E Republic Rd Ste D200 Suite D200, Springfield, MO 65807-6012
- Practice phone
- Call (417) 501-2644
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
417 Rheumatology
Physician office · Springfield, Missouri
Find Dr. True'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. David Gregory True is a rheumatologist in Springfield, Missouri
Dr. True practices at 417 Rheumatology in Springfield, Missouri.
Dr. True's NPI, 1609854769, was assigned on January 8, 2006. Dr. True graduated from University of North Texas Hsc, College of Osteopathic Med in 1997. Dr. True holds Missouri license 2010028893.
- NPI
- 1609854769NPI Registry (opens in a new tab)
- NPI enumeration date
- January 8, 2006
- NPI status
- Active
- Practice phone
- (417) 501-2644
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. David Gregory True practices at 2 locations in Springfield, Missouri
Dr. True's primary practice is 417 Rheumatology, at 909 E Republic Rd Ste D200 Suite D200, Springfield, MO 65807-6012. The practice phone is (417) 501-2644. The NPI Registry lists Dr. True's practice address as 3801 S National Ave, Springfield, MO 65807.
- 417 RheumatologyPrimary909 E Republic Rd Ste D200 Suite D200, Springfield, MO 65807-6012Phone(417) 501-2644
- NPI Registry address3801 S National Ave, Springfield, MO 65807 · Greene CountyPhone(417) 501-2644
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. David Gregory True is affiliated with 1 site of care and 1 medical group
Dr. True's primary practice is 417 Rheumatology in Springfield, Missouri. The medical group on file is Ozarks Healthcare General Surgery.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David Gregory True's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. True practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| 417 Rheumatology | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Gregory True is one of 136 rheumatologists in Missouri
Rheumatology is Dr. True's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. True is licensed in Missouri.
Specialties and state licenses
- Rheumatology, MissouriPrimary
Rheumatologists near Dr. True
Counts of rheumatologists 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. David Gregory True billed Medicare for 24,070 services in 2023
CMS data shows 24,070 Medicare services from Dr. True across 6 procedure codes in 2023. Medicare paid $468,218 for them. Every service was in an office.
Dr. True's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Drugs given in the office
- 2022: 11,2782023: 23,500108%
- Office and hospital visits
- 2022: 3302023: 3403%
- Tests and treatments
- 2022: 2742023: 23016%
- Surgery
- 2022: 682023: 0100%
Dr. True compared with the Missouri median for rheumatologists, 2023
- Dr. True
- Missouri median
- Medicare services
- 24,070vs 54744.0 times
- Part D claims
- 163vs 1,28887% below
Medians across 139 rheumatologists in Missouri with Dmand AI profiles that report each measure.
Dr. True's most billed Medicare procedure codes, 2023
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. True and other rheumatologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Gregory True's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. True's median patient age at 61, with 81% women.
Dr. True's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women81%
- Men15%
Source: Dmand AI Patient Panel Data
Dr. David Gregory True wrote 349 Medicare Part D claims in 2024
In 2024, Dr. True wrote 349 Medicare Part D claims for 112 patients. 81% of them were for generic drugs. CMS names the drug for 163 of them, across 7 drugs with 11 or more claims each, at $162,914 in total drug cost. In 2023, CMS named 1,606 claims across 41 drugs.
Dr. True's Part D claims by kind of drug, 2024
- Generic284 claims81%
- Brand-name and other65 claims19%
Dr. True'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6062024: 16390%
Drugs named by CMS: 7 in 2024, 41 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
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Dr. David Gregory True has 2 publications on record
Dmand AI links 2 papers to Dr. True in 2024. Dr. True's most frequent co-author is Robert Croop, MD.
Dr. True's most frequent co-authors
Recent publications by Dr. True
See who Dr. True researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. True works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Gregory True has worked on 20 clinical trials
Dmand AI links Dr. True to 20 clinical trials. 6 are still active or recruiting. Conditions studied include Diabetes Mellitus, Type 2, Diabetes Mellitus and Migraine Disorders. Eli Lilly and Company sponsors the most, 19. Open Payments lists research payments to Dr. True that name 17 trials.
Conditions in Dr. True's trials
- Diabetes Mellitus, Type 2
- Diabetes Mellitus
- Migraine Disorders
- Headache Disorders, Primary
- Rheumatic Diseases
Investigators on the most trials with Dr. True
- Lazaro D. Nunez, MD8 shared trials
- Julio Rosenstock, MD8 shared trials
- Cory G. Anderson, MD7 shared trials
Recent clinical trials with Dr. True
A Study of Daily Oral Orforglipron (LY3502970) Compared With Insulin Glargine in Participants With Type 2 Diabetes and Obesity or Overweight at Increased Cardiovascular Risk (opens in a new tab)
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. David Gregory True received $63,548 in industry payments from 2016 to 2025
CMS Open Payments shows 856 general payments to Dr. True from 44 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 27% of the total. Celgene Corporation paid the most, $34,236. It also lists 65 research payments totaling $184,988 from 2019 to 2024, naming 17 clinical trials.
General payments to Dr. True by program year, 2016 to 2025
General payments to Dr. True by kind, 2016 to 2025
- Food and beverage$17,37127%
- Travel and lodging$16,65626%
- Consulting fees$13,89522%
- Speaker and faculty fees$13,56321%
- Other$2,0633%
Companies that paid Dr. True 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. David Gregory True graduated from University of North Texas Hsc, College of Osteopathic Med
Dr. True graduated from University of North Texas Hsc, College of Osteopathic Med in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Gregory True'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. David Gregory True
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. David Gregory True's NPI number?
Dr. David Gregory True's NPI number is 1609854769. It was assigned on January 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Gregory True?
Dr. David Gregory True is a rheumatologist in Springfield, Missouri. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. David Gregory True practice?
Dr. True practices at 909 E Republic Rd Ste D200 Suite D200, Springfield, MO 65807-6012. Dr. True also practices at 3801 S National Ave, Springfield, MO 65807. Dr. True's primary practice is 417 Rheumatology in Springfield, Missouri.
What is Dr. David Gregory True's office phone number?
The practice phone on file for Dr. True is (417) 501-2644.
What is Dr. David Gregory True's medical license number?
Dr. True holds Missouri license 2010028893.
What medical group is Dr. David Gregory True part of?
Dr. True is linked to Ozarks Healthcare General Surgery.
Does Dr. David Gregory True accept Medicare?
Yes. CMS data shows Dr. True billed Medicare for 24,070 services in 2023.
What services does Dr. David Gregory True bill to Medicare?
In 2023, Dr. True's most billed Medicare services were injected or infused drug (J1602), injected or infused drug (J0129) and infusion or chemotherapy administration (96365).
Where did Dr. David Gregory True go to medical school?
Dr. True graduated from University of North Texas Hsc, College of Osteopathic Med in 1997.
What drugs does Dr. David Gregory True prescribe most?
In 2024 Medicare Part D data, Dr. True's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Methotrexate and Prednisone.
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Has Dr. David Gregory True received payments from drug or device companies?
CMS Open Payments shows $63,548 in general payments to Dr. True from 44 companies from 2016 to 2025. The largest total came from Celgene Corporation.
How long has Dr. David Gregory True been practicing?
Dr. True graduated from medical school in 1997, 29 years ago.
Does Dr. David Gregory True do research?
Dmand AI links 2 publications to Dr. True. Dr. True has worked on 20 clinical trials.
Who does Dr. David Gregory True publish with?
Dr. True's most frequent co-authors are Robert Croop, MD (1 shared paper).
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