Dr. Mark Gary Buchanan, MD
- Medicare services, 2024
- 6,211
- Medicare patients, 2024
- 1,006
- Part D claims, 2024
- 1,718
- MIPS score, 2024
- 75
- Hospital affiliations
- 4
- Practice address
- 1470 Tobias Gadson Blvd, Charleston, SC 29407
- Practice phone
- Call (843) 572-0097
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lowcountry Urology Clinics PA
Charleston, South Carolina
Find Dr. Buchanan's professional email, personal email and mobile number
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Dr. Mark Gary Buchanan is a urologist in Charleston, South Carolina
Dr. Buchanan practices at Lowcountry Urology Clinics PA in Charleston, South Carolina.
Dr. Buchanan's NPI, 1104825637, was assigned on July 18, 2005. Dr. Buchanan graduated from University of Tennessee, Hsc, College of Medicine in 1996. Dr. Buchanan holds South Carolina license 019842.
- NPI
- 1104825637NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012920853
- NPI enumeration date
- July 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (843) 572-0097
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Gary Buchanan practices at Lowcountry Urology Clinics PA in Charleston, South Carolina
Dr. Buchanan's primary practice is Lowcountry Urology Clinics PA, at 1470 Tobias Gadson Blvd, Charleston, SC 29407 in Charleston County. The practice phone is (843) 572-0097.
- Lowcountry Urology Clinics PA1470 Tobias Gadson Blvd, Charleston, SC 29407 · Charleston CountyPhone(843) 572-0097
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Gary Buchanan is affiliated with 6 sites of care and 1 medical group
Dr. Buchanan's primary practice is Lowcountry Urology Clinics PA in Charleston, South Carolina. Dr. Buchanan is also affiliated with Roper Hospital. The medical group on file is Lowcountry Urology Clinics. Dmand AI also links Dr. Buchanan to 3 more hospitals and 1 group practice or clinic, 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. Mark Gary Buchanan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buchanan practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lowcountry Urology Clinics PA | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Gary Buchanan is one of 199 urologists in South Carolina
Urology is Dr. Buchanan's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Buchanan is licensed in South Carolina.
Specialties and state licenses
- Urology, South CarolinaPrimary
Urologists near Dr. Buchanan
Counts of urologists 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 Gary Buchanan billed Medicare for 6,211 services in 2024
CMS data shows 6,211 Medicare services from Dr. Buchanan across 23 procedure codes in 2024, for 1,006 Medicare patients. Medicare paid $217,886 for them.
Dr. Buchanan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8692024: 2,36426%
- Other services
- 2023: 02024: 1,537
- Lab and pathology
- 2023: 1,5602024: 1,4944%
- Surgery
- 2023: 8332024: 7757%
- Tests and treatments
- 2023: 02024: 23
- Imaging
- 2023: 02024: 18
Where Dr. Buchanan's Medicare services took place, 2024
- In an office6,09898%
- In a facility1132%
Dr. Buchanan compared with the South Carolina median for urologists, 2024
- Dr. Buchanan
- South Carolina median
- Medicare services
- 6,211vs 2,4732.5 times
- Medicare patients
- 1,006vs 57974% above
- Part D claims
- 1,578vs 790100% above
Medians across 195 urologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Buchanan'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Buchanan and other urologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Gary Buchanan treated 1,006 Medicare patients in 2024, average age 76
CMS counts 1,006 Medicare patients who saw Dr. Buchanan in 2024. The largest group is 75 to 84, with 425 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Buchanan's median patient age at 69, with 27% women.
Dr. Buchanan's Medicare patients by age, 2024
Dr. Buchanan's Medicare patients by sex, 2024
- Women26626%
- Men74074%
Chronic conditions among Dr. Buchanan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes33%
- Ischemic heart disease31%
- Chronic kidney disease25%
- Atrial fibrillation23%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
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 69
Patient panel by sex, all payers
- Women27%
- Men73%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Gary Buchanan wrote 1,718 Medicare Part D claims in 2024
In 2024, Dr. Buchanan wrote 1,718 Medicare Part D claims for 563 patients. 82% of them were for generic drugs. CMS names the drug for 1,578 of them, across 23 drugs with 11 or more claims each, at $595,665 in total drug cost. In 2023, CMS named 1,543 claims across 22 drugs.
Dr. Buchanan's Part D claims by kind of drug, 2024
- Generic1,405 claims82%
- Brand-name and other313 claims18%
Dr. Buchanan'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. Buchanan's Part D claims, 2024
- Opioids3%58 of 1,718 claims
- Antibiotics19%322 of 1,718 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: 1,5432024: 1,5782%
Drugs named by CMS: 23 in 2024, 22 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
Dr. Mark Gary Buchanan scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Buchanan for performance year 2024, reported as part of a group. Dr. Buchanan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Buchanan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Prostate resection: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark Gary Buchanan received $11,320 in industry payments from 2016 to 2025
CMS Open Payments shows 470 general payments to Dr. Buchanan from 65 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 94% of the total. Astellas Pharma US Inc paid the most, $1,908.
General payments to Dr. Buchanan by program year, 2016 to 2025
General payments to Dr. Buchanan by kind, 2016 to 2025
- Food and beverage$10,69394%
- Education$4194%
- Consulting fees$2072%
Companies that paid Dr. Buchanan 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. Mark Gary Buchanan graduated from University of Tennessee, Hsc, College of Medicine
Dr. Buchanan graduated from University of Tennessee, Hsc, College of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Gary 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Gary 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. Mark Gary Buchanan's NPI number?
Dr. Mark Gary Buchanan's NPI number is 1104825637. It was assigned on July 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Gary Buchanan?
Dr. Mark Gary Buchanan is a urologist in Charleston, South Carolina. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Mark Gary Buchanan practice?
Dr. Buchanan practices at 1470 Tobias Gadson Blvd, Charleston, SC 29407. Dr. Buchanan's primary practice is Lowcountry Urology Clinics PA in Charleston, South Carolina. Dmand AI also links Dr. Buchanan to 3 hospitals and 1 group practice or clinic.
What is Dr. Mark Gary Buchanan's office phone number?
The practice phone on file for Dr. Buchanan is (843) 572-0097.
What is Dr. Mark Gary Buchanan's medical license number?
Dr. Buchanan holds South Carolina license 019842.
Which hospitals is Dr. Mark Gary Buchanan affiliated with?
Dr. Buchanan is affiliated with Roper Hospital. Dmand AI links Dr. Buchanan to 3 more hospitals.
What medical group is Dr. Mark Gary Buchanan part of?
Dr. Buchanan is linked to Lowcountry Urology Clinics.
Does Dr. Mark Gary Buchanan accept Medicare?
Yes. CMS data shows Dr. Buchanan billed Medicare for 6,211 services in 2024, and Dr. Buchanan accepts Medicare assignment.
Does Dr. Mark Gary Buchanan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Buchanan as offering telehealth services.
What is Dr. Mark Gary Buchanan's MIPS score?
Dr. Buchanan's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Mark Gary Buchanan see?
CMS counts 1,006 Medicare patients who saw Dr. Buchanan in 2024, with an average age of 76.
What services does Dr. Mark Gary Buchanan bill to Medicare?
In 2024, Dr. Buchanan's most billed Medicare services were medicare service (G2211), lab and pathology test (81002) and office visit, established patient (99214).
Where did Dr. Mark Gary Buchanan go to medical school?
Dr. Buchanan graduated from University of Tennessee, Hsc, College of Medicine in 1996.
What drugs does Dr. Mark Gary Buchanan prescribe most?
In 2024 Medicare Part D data, Dr. Buchanan's most prescribed drugs by claims were Tamsulosin HCl, Myrbetriq and Finasteride.
Has Dr. Mark Gary Buchanan received payments from drug or device companies?
CMS Open Payments shows $11,320 in general payments to Dr. Buchanan from 65 companies from 2016 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Mark Gary Buchanan been practicing?
Dr. Buchanan graduated from medical school in 1996, 30 years ago.
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