Dr. Marshall Shannon Shook II, MD
- Medicare services, 2022
- 1,697
- Part D claims, 2024
- 100
- Hospital affiliations
- 1
- Industry payments
- $1,028
- Medical group
- 1
- Practice address
- 109 Bee Street, Charleston, SC 29401
- Practice phone
- Call (843) 577-5011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Shook'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. Marshall Shannon Shook II is a cardiologist in Charleston, South Carolina
Dr. Shook practices at Ralph H. Johnson Department of Veterans Affairs Medical Center in Charleston, South Carolina, part of Veterans Health Administration.
Dr. Shook's NPI, 1518940469, was assigned on November 23, 2005. Dr. Shook graduated from University of Maryland School of Medicine in 1998. Dr. Shook holds South Carolina license 24622.
- NPI
- 1518940469NPI Registry (opens in a new tab)
- NPI enumeration date
- November 23, 2005
- NPI status
- Active
- Practice phone
- (843) 577-5011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Marshall Shannon Shook II practices at Ralph H. Johnson Department of Veterans Affairs Medical Center in Charleston, South Carolina
Dr. Shook's primary practice is Ralph H. Johnson Department of Veterans Affairs Medical Center, at 109 Bee Street, Charleston, SC 29401 in Charleston County. The practice phone is (843) 577-5011.
- Ralph H. Johnson Department of Veterans Affairs Medical Center109 Bee Street, Charleston, SC 29401 · Charleston CountyPhone(843) 577-5011
Source: Dmand AI Affiliation Data
Dr. Marshall Shannon Shook II is affiliated with 2 sites of care and 1 medical group
Dr. Shook's primary practice is Ralph H. Johnson Department of Veterans Affairs Medical Center in Charleston, South Carolina, part of Veterans Health Administration. The medical group on file is Beaufort Memorial Lowcountry Medical Group. Dmand AI also links Dr. Shook to 1 more group practice or clinic, named with a free account. Dr. Shook's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marshall Shannon Shook II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shook practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ralph H. Johnson Department of Veterans Affairs Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marshall Shannon Shook II is one of 262 cardiologists in South Carolina
Cardiovascular disease is Dr. Shook's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Shook's licenses on file in 3 states: South Carolina, Florida and Tennessee.
Specialties and state licenses
- Cardiovascular disease, South CarolinaPrimary
- Internal medicine, Florida
- Tennessee license
Cardiologists near Dr. Shook
Counts of cardiologists 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. Marshall Shannon Shook II billed Medicare for 1,697 services in 2022
CMS data shows 1,697 Medicare services from Dr. Shook across 13 procedure codes in 2022. Medicare paid $43,113 for them.
Dr. Shook's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Tests and treatments
- 2021: 3,9592022: 1,23069%
- Office and hospital visits
- 2021: 1,5982022: 42873%
- Imaging
- 2021: 1412022: 3972%
Where Dr. Shook's Medicare services took place, 2022
- In an office85050%
- In a facility84750%
Dr. Shook compared with the South Carolina median for cardiologists, 2022
- Dr. Shook
- South Carolina median
- Medicare services
- 1,697vs 2,93042% below
- Part D claims
- 427vs 2,38082% below
Medians across 263 cardiologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Shook's most billed Medicare procedure codes, 2022
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. Shook?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shook and other cardiologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marshall Shannon Shook II's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Shook's median patient age at 72, with 45% women.
Dr. Shook's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Marshall Shannon Shook II wrote 100 Medicare Part D claims in 2024
In 2024, Dr. Shook wrote 100 Medicare Part D claims for 48 patients. 90% of them were for generic drugs. They cover 16 drugs, with $82,632 in total drug cost. In 2022, CMS named 1,712 claims across 28 drugs.
Dr. Shook's Part D claims by kind of drug, 2024
- Generic90 claims90%
- Brand-name and other10 claims10%
Dr. Shook's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1,7122023: 42775%
Drugs named by CMS: 16 in 2023, 28 in 2022.
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. Marshall Shannon Shook II received $1,028 in industry payments from 2016 to 2021
CMS Open Payments shows 50 general payments to Dr. Shook from 15 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $251.
General payments to Dr. Shook by program year, 2016 to 2021
Companies that paid Dr. Shook 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. Marshall Shannon Shook II graduated from University of Maryland School of Medicine
Dr. Shook graduated from University of Maryland School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marshall Shannon Shook II'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 DataDmand AI Org Hierarchy 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) |
| 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. Marshall Shannon Shook II
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. Marshall Shannon Shook II's NPI number?
Dr. Marshall Shannon Shook II's NPI number is 1518940469. It was assigned on November 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Marshall Shannon Shook II?
Dr. Marshall Shannon Shook II is a cardiologist in Charleston, South Carolina. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Marshall Shannon Shook II practice?
Dr. Shook practices at 109 Bee Street, Charleston, SC 29401. Dr. Shook's primary practice is Ralph H. Johnson Department of Veterans Affairs Medical Center in Charleston, South Carolina, part of Veterans Health Administration. Dmand AI also links Dr. Shook to 1 group practice or clinic.
What is Dr. Marshall Shannon Shook II's office phone number?
The practice phone on file for Dr. Shook is (843) 577-5011.
What is Dr. Marshall Shannon Shook II's medical license number?
Dr. Shook holds South Carolina license 24622, one of the licenses on file in 3 states.
Which states has Dr. Marshall Shannon Shook II been licensed in?
Dmand AI has state licenses on file for Dr. Shook in South Carolina, Florida and Tennessee.
Which hospitals is Dr. Marshall Shannon Shook II affiliated with?
Dr. Shook practices at Ralph H. Johnson Department of Veterans Affairs Medical Center in Charleston, South Carolina.
What medical group is Dr. Marshall Shannon Shook II part of?
Dr. Shook is linked to Beaufort Memorial Lowcountry Medical Group.
Does Dr. Marshall Shannon Shook II accept Medicare?
Yes. CMS data shows Dr. Shook billed Medicare for 1,697 services in 2022.
What services does Dr. Marshall Shannon Shook II bill to Medicare?
In 2022, Dr. Shook's most billed Medicare services were heart test or procedure (93010), office visit, established patient (99214) and heart test or procedure (93000).
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Where did Dr. Marshall Shannon Shook II go to medical school?
Dr. Shook graduated from University of Maryland School of Medicine in 1998.
What drugs does Dr. Marshall Shannon Shook II prescribe most?
In 2023 Medicare Part D data, Dr. Shook's most prescribed drugs by claims were Metoprolol Succinate, Furosemide and Amlodipine Besylate.
Has Dr. Marshall Shannon Shook II received payments from drug or device companies?
CMS Open Payments shows $1,028 in general payments to Dr. Shook from 15 companies from 2016 to 2021. The largest total came from Abbott Laboratories.
How long has Dr. Marshall Shannon Shook II been practicing?
Dr. Shook graduated from medical school in 1998, 28 years ago.
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