Mark S. Dawson

  • Fort Myers, FL
  • Gastroenterologist
NPI1457322133PAC ID3678625969
Medicare services, 2024
6,801
Medicare patients, 2024
633
Part D claims, 2024
1,755
Hospital affiliations
4
Industry payments
$11,186
Practice address
2776 Cleveland Ave, Fort Myers, FL 33901
Practice phone
Call (239) 343-5000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Lee Memorial Hospital

Hospital · Fort Myers, Florida

See all 9 affiliations

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Mark S. Dawson is a gastroenterologist in Fort Myers, Florida

Mark Dawson practices at Lee Memorial Hospital in Fort Myers, Florida, part of Lee Health System.

Mark Dawson's NPI, 1457322133, was assigned on January 30, 2006. Mark Dawson graduated from University of Illinois College of Medicine - Chicago in 1987. Mark Dawson holds Florida license ME0064729.

NPI and contact details
Medicare PAC ID
3678625969
NPI enumeration date
January 30, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(239) 343-5000
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
65
Medical school graduation
1987

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Mark S. Dawson practices at Lee Memorial Hospital in Fort Myers, Florida

Mark Dawson's primary practice is Lee Memorial Hospital, at 2776 Cleveland Ave, Fort Myers, FL 33901 in Lee County. The practice phone is (239) 343-5000.

Source: Dmand AI Affiliation Data

Mark S. Dawson is affiliated with 5 sites of care and 4 medical groups

Mark Dawson's primary practice is Lee Memorial Hospital in Fort Myers, Florida, part of Lee Health System. Mark Dawson is also affiliated with Gulf Coast Medical Center. The medical group on file is Lee Physician Group. Dmand AI also links Mark Dawson to 2 more hospitals, 3 medical groups and 1 group practice or clinic, each named with a free account.

See all 9 affiliations for Mark Dawson

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Mark S. Dawson's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Mark Dawson practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Lee Memorial HospitalAvailable with a free account
+4 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Mark Dawson practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Lee Health System and 6.2K+ hospitals, with verified contacts in the same login.

Mark S. Dawson is one of 1,364 gastroenterologists in Florida

Gastroenterology is Mark Dawson's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Mark Dawson is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Mark Dawson's licenses on file in 3 states: Florida, Illinois and Texas.

Specialties and state licenses

  • Gastroenterology, FloridaPrimaryLicense ME0064729 · 1993 to 2027 · taxonomy 207RG0100X
  • Illinois license1987 to 1996
  • Texas license1994 to 1995

Clinical focus

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), colonoscopy, fatty liver, gastrointestinal bleeding, hemorrhoids, intestinal diverticulosis and irritable bowel syndrome (IBS) among the conditions Mark Dawson treats.

Gastroenterologists near Mark Dawson

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

Mark S. Dawson billed Medicare for 6,801 services in 2024

CMS data shows 6,801 Medicare services from Mark Dawson across 18 procedure codes in 2024, for 633 Medicare patients. Medicare paid $220,348 for them.

Medicare services, 20246,801
Medicare patients633
Paid by Medicare$220,348
Procedure codes18

Mark Dawson's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 13,5002024: 5,70058%
Office and hospital visits
2023: 6622024: 56814%
Surgery
2023: 6372024: 44131%
Other services
2023: 752024: 707%
Tests and treatments
2023: 622024: 2265%
Imaging
2023: 362024: 0100%

Where Mark Dawson's Medicare services took place, 2024

  • In an office6,12390%
  • In a facility67810%

Mark Dawson compared with the Florida median for gastroenterologists, 2024

  • Mark Dawson
  • Florida median
Medicare services
6,801vs 58211.7 times
Medicare patients
633vs 32297% above
Part D claims
1,571vs 5023.1 times

Medians across 1,320 gastroenterologists in Florida with Dmand AI profiles that report each measure.

Mark Dawson'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.

See all procedures by Mark Dawson

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Mark S. Dawson treated 633 Medicare patients in 2024, average age 74

CMS counts 633 Medicare patients who saw Mark Dawson in 2024. The largest group is 65 to 74, with 307 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.56, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Mark Dawson's median patient age at 67, with 48% women.

Medicare patients, 2024633
Average age74
Average risk score1.56
Also on Medicaid7%

Mark Dawson's Medicare patients by age, 2024

Mark Dawson's Medicare patients by sex, 2024

  • Women31349%
  • Men32051%

Chronic conditions among Mark Dawson's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis54%
  4. Ischemic heart disease41%
  5. Chronic kidney disease34%
  6. Mood disorders33%
  7. Anxiety31%
  8. Depression30%

Share of Medicare patients with each condition. A patient can have several.

Mark Dawson's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women48%
  • Men51%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Mark S. Dawson wrote 1,755 Medicare Part D claims in 2024

In 2024, Mark Dawson wrote 1,755 Medicare Part D claims for 535 patients. 86% of them were for generic drugs. CMS names the drug for 1,571 of them, across 18 drugs with 11 or more claims each, at $256,575 in total drug cost. In 2023, CMS named 1,568 claims across 19 drugs.

Part D claims, 20241,755
Drugs named by CMS18
Total drug cost$256,575
Part D patients535

Mark Dawson's Part D claims by kind of drug, 2024

  • Generic1,515 claims86%
  • Brand-name240 claims14%

Mark Dawson'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 Mark Dawson's Part D claims, 2024

  • Antibiotics4%77 of 1,755 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: 1,5682024: 1,571No change

Drugs named by CMS: 18 in 2024, 19 in 2023.

See all prescribing by Mark Dawson

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

Mark S. Dawson ranks in the 81st percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare

Mark Dawson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 126 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Mark Dawson, more than 81% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Mark Dawson ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
81st percentile126 procedures
Colonoscopy
73rd percentile77 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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Mark S. Dawson received $11,186 in industry payments from 2016 to 2025

CMS Open Payments shows 573 general payments to Mark Dawson from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $3,600.

General payments to Mark Dawson by program year, 2016 to 2025

General payments to Mark Dawson by kind, 2016 to 2025

$11.2Kin total
  • Food and beverage$10,99798%
  • Education$1892%

Companies that paid Mark Dawson the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Mark Dawson

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Mark S. Dawson has 1 award and honors on record

Dmand AI lists 1 award for Mark Dawson.

Awards and honors for Mark Dawson

  1. Undated
    • Clinical Adjunct Associate Professor

Source: Dmand AI Professional Profile Data

Mark S. Dawson graduated from University of Illinois College of Medicine - Chicago

Mark Dawson graduated from University of Illinois College of Medicine - Chicago in 1987.

  1. Medical schoolUniversity of Illinois College of Medicine - Chicago
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine
  3. Board certified in addiction medicineAmerican Board of Preventive Medicine

Source: Dmand AI Professional Profile Data

Mark S. Dawson accepts plans from 10 insurance carriers

Mark Dawson is in network with 10 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Excellus BlueCross BlueShield
  • Blue Cross Blue Shield of Michigan
  • Cigna
  • Humana
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • +2 more carriersWith a free account

Plan types Mark Dawson accepts, by number of carriers

  1. Medicare10
  2. PPO9
  3. HMO6
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Mark S. Dawson's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Mark S. Dawson

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Mark S. Dawson's NPI number?

Mark S. Dawson's NPI number is 1457322133. It was assigned on January 30, 2006, and it is active in the NPI Registry.

What does Mark S. Dawson specialize in?

Mark S. Dawson is a gastroenterologist in Fort Myers, Florida. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Mark S. Dawson practice?

Mark Dawson practices at 2776 Cleveland Ave, Fort Myers, FL 33901. Mark Dawson's primary practice is Lee Memorial Hospital in Fort Myers, Florida, part of Lee Health System. Dmand AI also links Mark Dawson to 2 hospitals, 3 medical groups and 1 group practice or clinic.

What is Mark S. Dawson's office phone number?

The practice phone on file for Mark Dawson is (239) 343-5000.

What is Mark S. Dawson's medical license number?

Mark Dawson holds Florida license ME0064729, one of the licenses on file in 3 states.

Which states has Mark S. Dawson been licensed in?

Dmand AI has state licenses on file for Mark Dawson in Florida (1993 to 2027), Illinois (1987 to 1996) and Texas (1994 to 1995).

Which hospitals is Mark S. Dawson affiliated with?

Mark Dawson practices at Lee Memorial Hospital in Fort Myers, Florida. Mark Dawson is also affiliated with Gulf Coast Medical Center. Dmand AI links Mark Dawson to 2 more hospitals.

What medical group is Mark S. Dawson part of?

Mark Dawson is linked to Lee Physician Group. Dmand AI links Mark Dawson to 3 more medical groups.

Does Mark S. Dawson accept Medicare?

Yes. CMS data shows Mark Dawson billed Medicare for 6,801 services in 2024, and Mark Dawson accepts Medicare assignment.

How many Medicare patients does Mark S. Dawson see?

CMS counts 633 Medicare patients who saw Mark Dawson in 2024, with an average age of 74.

Show 7 more questionsShow fewer questions

Is Mark S. Dawson board certified?

Yes. Mark Dawson is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Mark S. Dawson bill to Medicare?

In 2024, Mark Dawson's most billed Medicare services were injected or infused drug (J3380), surgery: digestive system (43239) and office visit, established patient (99214).

Where did Mark S. Dawson go to medical school?

Mark Dawson graduated from University of Illinois College of Medicine - Chicago in 1987.

What drugs does Mark S. Dawson prescribe most?

In 2024 Medicare Part D data, Mark Dawson's most prescribed drugs by claims were Pantoprazole Sodium, Linzess and Omeprazole.

Has Mark S. Dawson received payments from drug or device companies?

CMS Open Payments shows $11,186 in general payments to Mark Dawson from 43 companies from 2016 to 2025. The largest total came from Abbvie Inc.

How long has Mark S. Dawson been practicing?

Mark Dawson graduated from medical school in 1987, 39 years ago.

What insurance does Mark S. Dawson accept?

Mark Dawson is in network with 10 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.

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