Dr. Robert Larry Marshall, MD
- Medicare services, 2021
- 16
- Part D claims, 2021
- 124
- Industry payments
- $1,646
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 855 Montgomery St, Fort Worth, TX 76107
- Practice phone
- Call (817) 735-2198
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Acclaim Physician Group - Fort Worth (Montgomery St)
Multi-specialty group site · Fort Worth, Texas
Find Dr. Marshall's professional email, personal email and mobile number
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Dr. Robert Larry Marshall is a rheumatologist in Fort Worth, Texas
Dr. Marshall practices at Acclaim Physician Group - Fort Worth (Montgomery St) in Fort Worth, Texas.
Dr. Marshall's NPI, 1891991881, was assigned on June 26, 2007. Dr. Marshall graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1971. Dr. Marshall holds Texas license D9846.
- NPI
- 1891991881NPI Registry (opens in a new tab)
- NPI enumeration date
- June 26, 2007
- NPI status
- Active
- Practice phone
- (817) 735-2198
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Larry Marshall practices at Acclaim Physician Group - Fort Worth (Montgomery St) in Fort Worth, Texas
Dr. Marshall's primary practice is Acclaim Physician Group - Fort Worth (Montgomery St), at 855 Montgomery St, Fort Worth, TX 76107. The practice phone is (817) 735-2198.
- Acclaim Physician Group - Fort Worth (Montgomery St)855 Montgomery St, Fort Worth, TX 76107Phone(817) 735-2198
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Larry Marshall is affiliated with 1 site of care and 1 medical group
Dr. Marshall's primary practice is Acclaim Physician Group - Fort Worth (Montgomery St) in Fort Worth, Texas. The medical group on file is Acclaim Health.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Robert Larry Marshall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marshall practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Acclaim Physician Group - Fort Worth (Montgomery St) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Larry Marshall is one of 476 rheumatologists in Texas
Rheumatology is Dr. Marshall's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Marshall is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Marshall's licenses on file in 2 states: Texas and California.
Specialties and state licenses
- Rheumatology, TexasPrimary
- California license
Rheumatologists near Dr. Marshall
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. Robert Larry Marshall billed Medicare for 16 services in 2021
CMS data shows 16 Medicare services from Dr. Marshall across 1 procedure code in 2021, all of them office visits. Medicare paid $350 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marshall's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1192021: 1687%
Dr. Marshall compared with the Texas median for rheumatologists, 2021
- Dr. Marshall
- Texas median
- Medicare services
- 16vs 1,33199% below
- Part D claims
- 124vs 1,13889% below
Medians across 451 rheumatologists in Texas with Dmand AI profiles that report each measure.
Dr. Marshall's most billed Medicare procedure codes, 2021
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. Marshall and other rheumatologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Larry Marshall's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Marshall's median patient age at 73, with 47% women.
Dr. Marshall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women47%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Robert Larry Marshall wrote 124 Medicare Part D claims in 2021
In 2021, Dr. Marshall wrote 124 Medicare Part D claims. They cover 6 drugs, with $79,237 in total drug cost. In 2020, CMS named 623 claims across 15 drugs.
Dr. Marshall's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 6232021: 12480%
Drugs named by CMS: 6 in 2021, 15 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert Larry Marshall received $1,646 in industry payments from 2016 to 2022
CMS Open Payments shows 90 general payments to Dr. Marshall from 19 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $311.
General payments to Dr. Marshall by program year, 2016 to 2022
General payments to Dr. Marshall by kind, 2016 to 2022
- Food and beverage$1,62699%
- Education$211%
Companies that paid Dr. Marshall the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Larry Marshall graduated from University of Tennessee Health Science Center College of Medicine - Memphis
Dr. Marshall graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1971.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Robert Larry Marshall accepts plans from 2 insurance carriers
Dr. Marshall is in network with 2 carriers, including Cigna and Humana. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Cigna
- Humana
Plan types Dr. Marshall accepts, by number of carriers
- HMO2
- Medicare2
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Larry Marshall'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Robert Larry Marshall
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. Robert Larry Marshall's NPI number?
Dr. Robert Larry Marshall's NPI number is 1891991881. It was assigned on June 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Larry Marshall?
Dr. Robert Larry Marshall is a rheumatologist in Fort Worth, Texas. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Robert Larry Marshall practice?
Dr. Marshall practices at 855 Montgomery St, Fort Worth, TX 76107. Dr. Marshall's primary practice is Acclaim Physician Group - Fort Worth (Montgomery St) in Fort Worth, Texas.
What is Dr. Robert Larry Marshall's office phone number?
The practice phone on file for Dr. Marshall is (817) 735-2198.
What is Dr. Robert Larry Marshall's medical license number?
Dr. Marshall holds Texas license D9846, one of the licenses on file in 2 states.
Which states has Dr. Robert Larry Marshall been licensed in?
Dmand AI has state licenses on file for Dr. Marshall in Texas (1972 to 2026) and California (1989 to 2026).
What medical group is Dr. Robert Larry Marshall part of?
Dr. Marshall is linked to Acclaim Health.
Does Dr. Robert Larry Marshall accept Medicare?
Yes. CMS data shows Dr. Marshall billed Medicare for 16 services in 2021.
Is Dr. Robert Larry Marshall board certified?
Yes. Dr. Marshall is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Robert Larry Marshall bill to Medicare?
In 2021, Dr. Marshall's most billed Medicare services were office visit, established patient (99214).
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Where did Dr. Robert Larry Marshall go to medical school?
Dr. Marshall graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1971.
What drugs does Dr. Robert Larry Marshall prescribe most?
In 2021 Medicare Part D data, Dr. Marshall's most prescribed drugs by claims were Methotrexate, Hydroxychloroquine Sulfate and Prednisone.
Has Dr. Robert Larry Marshall received payments from drug or device companies?
CMS Open Payments shows $1,646 in general payments to Dr. Marshall from 19 companies from 2016 to 2022. The largest total came from Amgen Inc.
How long has Dr. Robert Larry Marshall been practicing?
Dr. Marshall graduated from medical school in 1971, 55 years ago.
What insurance does Dr. Robert Larry Marshall accept?
Dr. Marshall is in network with 2 carriers, including Cigna and Humana. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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