Artif Organs
Hepatitis C, ChronicLiverLiver Cirrhosis
Dr. Thomas Lloyd Simcox, MD
NPI1124287461PAC ID0345466678
- Medicare services, 2024
- 1,280
- Medicare patients, 2024
- 681
- Part D claims, 2024
- 1,266
- Publications
- 3
- Hospital affiliations
- 4
- Practice address
- 820 Bestgate Road, Ste 1-A, Annapolis, MD 21401
- Practice phone
- Call (410) 224-2116
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Maryland Center Digestive Health
Surgery Center - Medicare-Certified · Annapolis, Maryland
Find Dr. Simcox's professional email, personal email and mobile number
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Dr. Thomas Lloyd Simcox is a gastroenterologist in Annapolis, Maryland
Dr. Simcox practices at Maryland Center Digestive Health in Annapolis, Maryland.
Dr. Simcox's NPI, 1124287461, was assigned on June 2, 2008. Dr. Simcox graduated from University of Maryland School of Medicine in 2011. Dr. Simcox holds Maryland license D0074289.
NPI and contact details
- NPI
- 1124287461NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345466678
- NPI enumeration date
- June 2, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (410) 224-2116
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Lloyd Simcox practices at Maryland Center Digestive Health in Annapolis, Maryland
Dr. Simcox's primary practice is Maryland Center Digestive Health, at 820 Bestgate Road, Ste 1-A, Annapolis, MD 21401. The practice phone is (410) 224-2116.
- Maryland Center Digestive Health820 Bestgate Road, Ste 1-A, Annapolis, MD 21401Phone(410) 224-2116
Source: Dmand AI Affiliation Data
Dr. Thomas Lloyd Simcox is affiliated with 6 sites of care and 1 medical group
Dr. Simcox's primary practice is Maryland Center Digestive Health in Annapolis, Maryland. Dr. Simcox is also affiliated with Luminis Health Anne Arundel Medical Center. The medical group on file is Anne Arundel Gastroenterology Associates. Dmand AI also links Dr. Simcox to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Maryland Center Digestive HealthPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Lloyd Simcox's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simcox practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Maryland Center Digestive Health | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Thomas Lloyd Simcox is one of 405 gastroenterologists in Maryland
Gastroenterology is Dr. Simcox's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Simcox is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Simcox is licensed in Maryland.
Specialties and state licenses
- Gastroenterology, MarylandPrimary
Gastroenterologists near Dr. Simcox
Counts of gastroenterologists 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. Thomas Lloyd Simcox billed Medicare for 1,280 services in 2024
CMS data shows 1,280 Medicare services from Dr. Simcox across 11 procedure codes in 2024, for 681 Medicare patients. Medicare paid $134,171 for them.
Medicare services, 20241,280
Medicare patients681
Paid by Medicare$134,171
Procedure codes11
Dr. Simcox's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5862024: 64911%
- Surgery
- 2023: 5642024: 5803%
- Other services
- 2023: 372024: 408%
- Tests and treatments
- 2023: 122024: 118%
Where Dr. Simcox's Medicare services took place, 2024
- In an office66052%
- In a facility62048%
Dr. Simcox compared with the Maryland median for gastroenterologists, 2024
- Dr. Simcox
- Maryland median
- Medicare services
- 1,280vs 66892% above
- Medicare patients
- 681vs 39075% above
- Part D claims
- 1,118vs 3922.9 times
Medians across 396 gastroenterologists in Maryland with Dmand AI profiles that report each measure.
Dr. Simcox'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.
Need commercial claims for Dr. Simcox?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Simcox and other gastroenterologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Lloyd Simcox treated 681 Medicare patients in 2024, average age 73
CMS counts 681 Medicare patients who saw Dr. Simcox in 2024. The largest group is 65 to 74, with 379 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 4% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Simcox's median patient age at 63, with 49% women.
Medicare patients, 2024681
Average age73
Average risk score0.87
Also on Medicaid4%
Dr. Simcox's Medicare patients by age, 2024
Dr. Simcox's Medicare patients by sex, 2024
- Women34751%
- Men33449%
Chronic conditions among Dr. Simcox's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis50%
- Anxiety25%
- Diabetes25%
- Ischemic heart disease25%
- Mood disorders21%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simcox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Lloyd Simcox wrote 1,266 Medicare Part D claims in 2024
In 2024, Dr. Simcox wrote 1,266 Medicare Part D claims for 499 patients. 84% of them were for generic drugs. CMS names the drug for 1,118 of them, across 16 drugs with 11 or more claims each, at $290,739 in total drug cost. In 2023, CMS named 660 claims across 14 drugs.
Part D claims, 20241,266
Drugs named by CMS16
Total drug cost$290,739
Part D patients499
Dr. Simcox's Part D claims by kind of drug, 2024
- Generic1,067 claims84%
- Brand-name and other199 claims16%
Dr. Simcox'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. Simcox's Part D claims, 2024
- Antibiotics1%15 of 1,266 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: 6602024: 1,11869%
Drugs named by CMS: 16 in 2024, 14 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. Thomas Lloyd Simcox ranks in the 94th percentile for colonoscopy in Medicare
Dr. Simcox accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Simcox as offering telehealth. CMS counts 214 procedures of colonoscopy by Dr. Simcox, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Simcox ranks in Medicare procedure volume
- Colonoscopy
- 94th percentile214 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 84th percentile145 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Thomas Lloyd Simcox has 3 publications on record
Dmand AI links 3 papers to Dr. Simcox in 2016. The most frequent topics are Liver and Liver Cirrhosis. Dr. Simcox's most frequent co-authors are David Maxwell Hunter Chascsa, MD, Michail Lionakis and Sarah Kaplan Browne, MD.
Papers3
Topics Dr. Simcox writes about most
- Liver
- Liver Cirrhosis
Dr. Simcox's most frequent co-authors
- David Maxwell Hunter Chascsa, MD2 shared papers
- Michail Lionakis2 shared papers
- Sarah Kaplan Browne, MD1 shared paper
Recent publications by Dr. Simcox
AmericasAutoantibodiesBiopsy
See who Dr. Simcox researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Simcox works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas Lloyd Simcox received $3,302 in industry payments from 2016 to 2025
CMS Open Payments shows 184 general payments to Dr. Simcox from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,538.
General payments to Dr. Simcox by program year, 2016 to 2025
Companies that paid Dr. Simcox 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. Thomas Lloyd Simcox graduated from University of Maryland School of Medicine
Dr. Simcox graduated from University of Maryland School of Medicine in 2011.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Lloyd Simcox'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Thomas Lloyd Simcox
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. Thomas Lloyd Simcox's NPI number?
Dr. Thomas Lloyd Simcox's NPI number is 1124287461. It was assigned on June 2, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Lloyd Simcox?
Dr. Thomas Lloyd Simcox is a gastroenterologist in Annapolis, Maryland. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Thomas Lloyd Simcox practice?
Dr. Simcox practices at 820 Bestgate Road, Ste 1-A, Annapolis, MD 21401. Dr. Simcox's primary practice is Maryland Center Digestive Health in Annapolis, Maryland. Dmand AI also links Dr. Simcox to 3 hospitals and 1 group practice or clinic.
What is Dr. Thomas Lloyd Simcox's office phone number?
The practice phone on file for Dr. Simcox is (410) 224-2116.
What is Dr. Thomas Lloyd Simcox's medical license number?
Dr. Simcox holds Maryland license D0074289.
Which hospitals is Dr. Thomas Lloyd Simcox affiliated with?
Dr. Simcox is affiliated with Luminis Health Anne Arundel Medical Center. Dmand AI links Dr. Simcox to 3 more hospitals.
What medical group is Dr. Thomas Lloyd Simcox part of?
Dr. Simcox is linked to Anne Arundel Gastroenterology Associates.
Does Dr. Thomas Lloyd Simcox accept Medicare?
Yes. CMS data shows Dr. Simcox billed Medicare for 1,280 services in 2024, and Dr. Simcox accepts Medicare assignment.
Does Dr. Thomas Lloyd Simcox offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Simcox as offering telehealth services.
How many Medicare patients does Dr. Thomas Lloyd Simcox see?
CMS counts 681 Medicare patients who saw Dr. Simcox in 2024, with an average age of 73.
Show 8 more questionsShow fewer questions
Is Dr. Thomas Lloyd Simcox board certified?
Yes. Dr. Simcox is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Thomas Lloyd Simcox bill to Medicare?
In 2024, Dr. Simcox's most billed Medicare services were office visit, established patient (99213), surgery: digestive system (45385) and surgery: digestive system (45380).
Where did Dr. Thomas Lloyd Simcox go to medical school?
Dr. Simcox graduated from University of Maryland School of Medicine in 2011.
What drugs does Dr. Thomas Lloyd Simcox prescribe most?
In 2024 Medicare Part D data, Dr. Simcox's most prescribed drugs by claims were Pantoprazole Sodium, Sod Sulf-Potass Sulf-Mag Sulf and Famotidine.
Has Dr. Thomas Lloyd Simcox received payments from drug or device companies?
CMS Open Payments shows $3,302 in general payments to Dr. Simcox from 24 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Thomas Lloyd Simcox been practicing?
Dr. Simcox graduated from medical school in 2011, 15 years ago.
Does Dr. Thomas Lloyd Simcox do research?
Dmand AI links 3 publications to Dr. Simcox.
Who does Dr. Thomas Lloyd Simcox publish with?
Dr. Simcox's most frequent co-authors are David Maxwell Hunter Chascsa, MD (2 shared papers), Michail Lionakis (2 shared papers) and Sarah Kaplan Browne, MD (1 shared paper).
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