Dr. Mark Brian Buckner, MD
- Medicare services, 2020
- 465
- Part D claims, 2022
- 22
- Industry payments
- $24
- Affiliated sites
- 1
- State licenses
- 2
- Practice address
- 913 Cottonwood Dr, Sherman, TX 75090-2831
- Practice phone
- Call (903) 868-9565
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sherman Immediate Care Clinic PLLC
Physician office · Sherman, Texas
Find Dr. Buckner'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. Mark Brian Buckner is an emergency medicine physician in Sherman, Texas
Dr. Buckner practices at Sherman Immediate Care Clinic PLLC in Sherman, Texas.
Dr. Buckner's NPI, 1396752879, was assigned on August 1, 2006. Dr. Buckner graduated from Texas Tech University Health Sciences Center School of Medicine in 1991. Dr. Buckner's Texas license number on file is J1898.
- NPI
- 1396752879NPI Registry (opens in a new tab)
- NPI enumeration date
- August 1, 2006
- NPI status
- Active
- Practice phone
- (903) 868-9565
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark Brian Buckner practices at Sherman Immediate Care Clinic PLLC in Sherman, Texas
Dr. Buckner's primary practice is Sherman Immediate Care Clinic PLLC, at 913 Cottonwood Dr, Sherman, TX 75090-2831. The practice phone is (903) 868-9565.
- Sherman Immediate Care Clinic PLLC913 Cottonwood Dr, Sherman, TX 75090-2831Phone(903) 868-9565
Source: Dmand AI Affiliation Data
Dr. Mark Brian Buckner is affiliated with 1 site of care
Dr. Buckner's primary practice is Sherman Immediate Care Clinic PLLC in Sherman, Texas.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark Brian Buckner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buckner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sherman Immediate Care Clinic PLLC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Brian Buckner is one of 4,831 emergency medicine physicians in Texas
Emergency medicine is Dr. Buckner's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Buckner's licenses on file in 2 states: Texas and Arkansas.
Specialties and state licenses
- Emergency medicine, TexasPrimary
- Arkansas license
Emergency medicine physicians near Dr. Buckner
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
Dr. Mark Brian Buckner billed Medicare for 465 services in 2020
CMS data shows 465 Medicare services from Dr. Buckner across 7 procedure codes in 2020. Medicare paid $3,709 for them. Every service was in an office.
Dr. Buckner's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Drugs given in the office
- 2019: 9672020: 30568%
- Office and hospital visits
- 2019: 2012020: 7463%
- Tests and treatments
- 2019: 2792020: 6876%
- Surgery
- 2019: 412020: 1856%
- Imaging
- 2019: 272020: 0100%
- Lab and pathology
- 2019: 402020: 0100%
- Other services
- 2019: 552020: 0100%
Dr. Buckner compared with the Texas median for emergency medicine physicians, 2020
- Dr. Buckner
- Texas median
- Medicare services
- 465vs 2252.1 times
- Part D claims
- 22vs 7470% below
Medians across 4,588 emergency medicine physicians in Texas with Dmand AI profiles that report each measure.
Dr. Buckner's most billed Medicare procedure codes, 2020
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. Buckner and other emergency medicine physicians in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Brian Buckner wrote 22 Medicare Part D claims in 2022
In 2022, Dr. Buckner wrote 22 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $533 in total drug cost. In 2019, CMS named 16 claims across 1 drug.
Dr. Buckner's most prescribed drugs by claims, 2022
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, 2019 to 2022
- 2019
- 2022
- Claims for drugs CMS names
- 2019: 162022: 2238%
Drugs named by CMS: 2 in 2022, 1 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark Brian Buckner received $24 in industry payments from 2016 to 2021
CMS Open Payments shows 2 general payments to Dr. Buckner from 2 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Daiichi Sankyo Inc. paid the most, $12.
General payments to Dr. Buckner by program year, 2016 to 2021
Companies that paid Dr. Buckner the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Brian Buckner graduated from Texas Tech University Health Sciences Center School of Medicine
Dr. Buckner graduated from Texas Tech University Health Sciences Center School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Brian Buckner'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 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 |
| 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 |
| 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. Mark Brian Buckner
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. Mark Brian Buckner's NPI number?
Dr. Mark Brian Buckner's NPI number is 1396752879. It was assigned on August 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Brian Buckner?
Dr. Mark Brian Buckner is an emergency medicine physician in Sherman, Texas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Brian Buckner practice?
Dr. Buckner practices at 913 Cottonwood Dr, Sherman, TX 75090-2831. Dr. Buckner's primary practice is Sherman Immediate Care Clinic PLLC in Sherman, Texas.
What is Dr. Mark Brian Buckner's office phone number?
The practice phone on file for Dr. Buckner is (903) 868-9565.
What is Dr. Mark Brian Buckner's medical license number?
Dr. Buckner's Texas license number on file is J1898, one of the licenses on file in 2 states.
Which states has Dr. Mark Brian Buckner been licensed in?
Dmand AI has state licenses on file for Dr. Buckner in Texas (1992 to 2024) and Arkansas (1992 to 1995).
Does Dr. Mark Brian Buckner accept Medicare?
Yes. CMS data shows Dr. Buckner billed Medicare for 465 services in 2020.
What services does Dr. Mark Brian Buckner bill to Medicare?
In 2020, Dr. Buckner's most billed Medicare services were injected or infused drug (J1100), injected or infused drug (J0696) and infusion or chemotherapy administration (96372).
Where did Dr. Mark Brian Buckner go to medical school?
Dr. Buckner graduated from Texas Tech University Health Sciences Center School of Medicine in 1991.
What drugs does Dr. Mark Brian Buckner prescribe most?
In 2022 Medicare Part D data, Dr. Buckner's most prescribed drugs by claims were Cefdinir and Doxycycline Hyclate.
Has Dr. Mark Brian Buckner received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Dr. Buckner from 2 companies from 2016 to 2021. The largest total came from Daiichi Sankyo Inc.
How long has Dr. Mark Brian Buckner been practicing?
Dr. Buckner graduated from medical school in 1991, 35 years ago.
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