Dr. Gary S. Buchanan, MD
- Medicare services, 2021
- 58
- Part D claims, 2019
- 15
- Industry payments
- $18
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 4605 Wilmington St, Houston, TX 77051
- Practice phone
- Call (832) 393-5427
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Houston Health Department
Houston, Texas
Find Dr. Buchanan'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. Gary S. Buchanan is an emergency medicine physician in Houston, Texas
Dr. Buchanan practices at Houston Health Department in Houston, Texas.
Dr. Buchanan's NPI, 1043296643, was assigned on December 16, 2005. Dr. Buchanan graduated from Baylor College Of Medicine in 1988. Dr. Buchanan's Texas license number on file is H6083.
- NPI
- 1043296643NPI Registry (opens in a new tab)
- NPI enumeration date
- December 16, 2005
- NPI status
- Active
- Practice phone
- (832) 393-5427
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gary S. Buchanan practices at Houston Health Department in Houston, Texas
Dr. Buchanan's primary practice is Houston Health Department, at 4605 Wilmington St, Houston, TX 77051 in Harris County. The practice phone is (832) 393-5427.
- Houston Health Department4605 Wilmington St, Houston, TX 77051 · Harris CountyPhone(832) 393-5427
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gary S. Buchanan is affiliated with 2 sites of care and 2 medical groups
Dr. Buchanan's primary practice is Houston Health Department in Houston, Texas. The medical group on file is Houston Health Department. Dmand AI also links Dr. Buchanan to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gary S. Buchanan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buchanan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Houston Health Department | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary S. Buchanan is one of 4,831 emergency medicine physicians in Texas
Emergency medicine is Dr. Buchanan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Buchanan is board certified in internal medicine by the American Board of Internal Medicine. Dr. Buchanan has a license on file in Texas.
Specialties and state licenses
- Emergency medicine, TexasPrimary
Emergency medicine physicians near Dr. Buchanan
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. Gary S. Buchanan billed Medicare for 58 services in 2021
CMS data shows 58 Medicare services from Dr. Buchanan across 3 procedure codes in 2021. Medicare paid $6,766 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Buchanan's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 692021: 5816%
Dr. Buchanan compared with the Texas median for emergency medicine physicians, 2021
- Dr. Buchanan
- Texas median
- Medicare services
- 58vs 22574% below
- Part D claims
- 15vs 7480% below
Medians across 4,588 emergency medicine physicians in Texas with Dmand AI profiles that report each measure.
Dr. Buchanan'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.
Need commercial claims for Dr. Buchanan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Buchanan 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. Gary S. Buchanan's patients have a median age of 27
Across all payers, Dmand AI patient panel data puts Dr. Buchanan's median patient age at 27, with 82% women.
Dr. Buchanan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 27
Patient panel by sex, all payers
- Women82%
- Men16%
Source: Dmand AI Patient Panel Data
Dr. Gary S. Buchanan wrote 15 Medicare Part D claims in 2019
In 2019, Dr. Buchanan wrote 15 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $124 in total drug cost. In 2018, CMS named 13 claims across 1 drug.
Dr. Buchanan's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 132019: 1515%
Drugs named by CMS: 1 in 2019, 1 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Gary S. Buchanan received $18 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Buchanan from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Organon LLC paid the most, $18.
Companies that paid Dr. Buchanan the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary S. Buchanan graduated from Baylor College Of Medicine
Dr. Buchanan graduated from Baylor College Of Medicine in 1988.
- Medical school
- Board certified in internal medicine
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Gary S. Buchanan accepts plans from 19 insurance carriers
Dr. Buchanan is in network with 19 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Aetna
- Elevance
- HCSC
- Highmark
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- +11 more carriersWith a free account
Plan types Dr. Buchanan accepts, by number of carriers
- PPO12
- HMO10
- Medicare5
- EPO4
- POS3
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gary S. Buchanan'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Gary S. Buchanan
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. Gary S. Buchanan's NPI number?
Dr. Gary S. Buchanan's NPI number is 1043296643. It was assigned on December 16, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary S. Buchanan?
Dr. Gary S. Buchanan is an emergency medicine physician in Houston, Texas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Gary S. Buchanan practice?
Dr. Buchanan practices at 4605 Wilmington St, Houston, TX 77051. Dr. Buchanan's primary practice is Houston Health Department in Houston, Texas. Dmand AI also links Dr. Buchanan to 1 group practice or clinic and 1 medical group.
What is Dr. Gary S. Buchanan's office phone number?
The practice phone on file for Dr. Buchanan is (832) 393-5427.
What is Dr. Gary S. Buchanan's medical license number?
Dr. Buchanan's Texas license number on file is H6083.
What medical group is Dr. Gary S. Buchanan part of?
Dr. Buchanan is linked to Houston Health Department. Dmand AI links Dr. Buchanan to 1 more medical group.
Does Dr. Gary S. Buchanan accept Medicare?
Yes. CMS data shows Dr. Buchanan billed Medicare for 58 services in 2021.
Is Dr. Gary S. Buchanan board certified?
Yes. Dr. Buchanan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gary S. Buchanan bill to Medicare?
In 2021, Dr. Buchanan's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. Gary S. Buchanan go to medical school?
Dr. Buchanan graduated from Baylor College Of Medicine in 1988.
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What drugs does Dr. Gary S. Buchanan prescribe most?
In 2019 Medicare Part D data, Dr. Buchanan's most prescribed drugs by claims were Azithromycin.
Has Dr. Gary S. Buchanan received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Buchanan from 1 company from 2023 to 2023. The largest total came from Organon LLC.
How long has Dr. Gary S. Buchanan been practicing?
Dr. Buchanan graduated from medical school in 1988, 38 years ago.
What insurance does Dr. Gary S. Buchanan accept?
Dr. Buchanan is in network with 19 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Aetna. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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