Dr. Gillian A. Ellis, MD

  • Orlando, FL
  • Internist
NPI1811196215PAC ID7719026459
Medicare services, 2024
691
Medicare patients, 2024
339
Part D claims, 2024
639
MIPS score, 2024
80
Hospital affiliations
4
Practice address
92 W Miller St, Orlando, FL 32806
Practice phone
Call (407) 650-5028
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Arnold Palmer Hospital for Children

Orlando, Florida

See all 9 affiliations

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Dr. Gillian A. Ellis is an internist in Orlando, Florida

Dr. Ellis practices at Arnold Palmer Hospital for Children in Orlando, Florida.

Dr. Ellis' NPI, 1811196215, was assigned on July 16, 2007. Dr. Ellis graduated from Ross University School of Medicine in 2003. Dr. Ellis holds Florida license ME107435.

NPI and contact details
Medicare PAC ID
7719026459
NPI enumeration date
July 16, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(407) 650-5028
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
49
Medical school graduation
2003

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

Dr. Gillian A. Ellis practices at Arnold Palmer Hospital for Children in Orlando, Florida

Dr. Ellis' primary practice is Arnold Palmer Hospital for Children, at 92 W Miller St, Orlando, FL 32806 in Orange County. The practice phone is (407) 650-5028.

  • Arnold Palmer Hospital for Children
    92 W Miller St, Orlando, FL 32806 · Orange CountyPhone(407) 650-5028

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Gillian A. Ellis is affiliated with 6 sites of care and 3 medical groups

Dr. Ellis' primary practice is Arnold Palmer Hospital for Children in Orlando, Florida. Dr. Ellis is also affiliated with Orlando Regional Medical Center. The medical group on file is Orlando Health Medical Group. Dmand AI also links Dr. Ellis to 3 more hospitals, 2 medical groups and 1 physician office, each named with a free account.

See all 9 affiliations for Dr. Ellis

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Gillian A. Ellis' practice

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

EHR by site
SiteEHR vendor and product
Arnold Palmer Hospital for ChildrenAvailable with a free account
+5 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gillian A. Ellis is one of 9,009 internists in Florida

Internal medicine is Dr. Ellis' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ellis is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ellis' licenses on file in 3 states: Florida, Louisiana and Georgia.

Specialties and state licenses

  • Internal medicine, FloridaPrimaryLicense ME107435 · 2010 to 2026 · taxonomy 207R00000X
  • Louisiana license2008 to 2025
  • Georgia licenseLicense 062791 · 2009 to 2018

Clinical focus

Dmand AI lists acute diabetes, bile duct problems, cardiac arrhythmia, chest pain, chronic respiratory failure, circulation problems, circulatory problems in extremities and congestive heart failure among the conditions Dr. Ellis treats.

Internists near Dr. Ellis

Counts of internists 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. Gillian A. Ellis billed Medicare for 691 services in 2024

CMS data shows 691 Medicare services from Dr. Ellis across 4 procedure codes in 2024, for 339 Medicare patients. Medicare paid $57,803 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024691
Medicare patients339
Paid by Medicare$57,803
Procedure codes4

Dr. Ellis' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 5002024: 69138%

Dr. Ellis compared with the Florida median for internists, 2024

  • Dr. Ellis
  • Florida median
Medicare services
691vs 55525% above
Medicare patients
339vs 21558% above
Part D claims
270vs 46642% below

Medians across 8,488 internists in Florida with Dmand AI profiles that report each measure.

Dr. Ellis' 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 Dr. Ellis

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

Dr. Gillian A. Ellis treated 339 Medicare patients in 2024, average age 77

CMS counts 339 Medicare patients who saw Dr. Ellis in 2024. The largest group is 75 to 84, with 131 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.57, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Ellis' median patient age at 72, with 53% women.

Medicare patients, 2024339
Average age77
Average risk score2.57
Also on Medicaid14%

Dr. Ellis' Medicare patients by age, 2024

Dr. Ellis' Medicare patients by sex, 2024

  • Women18655%
  • Men15345%

Chronic conditions among Dr. Ellis' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Ischemic heart disease59%
  4. Chronic kidney disease58%
  5. Arthritis56%
  6. Heart failure51%
  7. Diabetes50%
  8. Anxiety44%

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

Dr. Ellis' 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

  • Women53%
  • Men47%

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

Dr. Gillian A. Ellis wrote 639 Medicare Part D claims in 2024

In 2024, Dr. Ellis wrote 639 Medicare Part D claims for 304 patients. 88% of them were for generic drugs. CMS names the drug for 270 of them, across 16 drugs with 11 or more claims each, at $2,023 in total drug cost. In 2023, CMS named 165 claims across 11 drugs.

Part D claims, 2024639
Drugs named by CMS16
Total drug cost$2,023
Part D patients304

Dr. Ellis' Part D claims by kind of drug, 2024

  • Generic565 claims88%
  • Brand-name and other74 claims12%

Dr. Ellis' 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. Ellis' Part D claims, 2024

  • Opioids3%16 of 639 claims
  • Antibiotics26%168 of 639 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: 1652024: 27064%

Drugs named by CMS: 16 in 2024, 11 in 2023.

See all prescribing by Dr. Ellis

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. Gillian A. Ellis scored 80 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 80 out of 100 for Dr. Ellis for performance year 2024, reported as part of a group. Dr. Ellis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Ellis' MIPS scores, performance year 2024

  • 80of 100Final score
  • 61.2of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 72of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Gillian A. Ellis received $284 in industry payments from 2016 to 2023

CMS Open Payments shows 8 general payments to Dr. Ellis from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $93.

General payments to Dr. Ellis by program year, 2016 to 2023

Companies that paid Dr. Ellis the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Ellis

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

Dr. Gillian A. Ellis has 1 award and honors on record

Dmand AI lists 1 award for Dr. Ellis, most recently Morton levy Humanitarian award in 2008.

Awards and honors for Dr. Ellis

  1. 2008
    • Morton levy Humanitarian award

Source: Dmand AI Professional Profile Data

Dr. Gillian A. Ellis graduated from Ross University School of Medicine

Dr. Ellis graduated from Ross University School of Medicine in 2003.

  1. Medical schoolRoss University School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Gillian A. Ellis accepts plans from 10 insurance carriers

Dr. Ellis is in network with 10 carriers, including Excellus BlueCross BlueShield, Aetna and Elevance. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.

  • Excellus BlueCross BlueShield
  • Aetna
  • Elevance
  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • Blue Cross and Blue Shield of Louisiana
  • Cigna
  • CMS Medicare
  • +2 more carriersWith a free account

Plan types Dr. Ellis accepts, by number of carriers

  1. PPO5
  2. Medicare4
  3. POS4
  4. EPO3
  5. HMO3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Gillian A. Ellis'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Clinician Public Reporting: Overall MIPS Performance (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 Dr. Gillian A. Ellis

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. Gillian A. Ellis' NPI number?

Dr. Gillian A. Ellis' NPI number is 1811196215. It was assigned on July 16, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Gillian A. Ellis?

Dr. Gillian A. Ellis is an internist in Orlando, Florida. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Gillian A. Ellis practice?

Dr. Ellis practices at 92 W Miller St, Orlando, FL 32806. Dr. Ellis' primary practice is Arnold Palmer Hospital for Children in Orlando, Florida. Dmand AI also links Dr. Ellis to 3 hospitals, 2 medical groups and 1 physician office.

What is Dr. Gillian A. Ellis' office phone number?

The practice phone on file for Dr. Ellis is (407) 650-5028.

What is Dr. Gillian A. Ellis' medical license number?

Dr. Ellis holds Florida license ME107435, one of the licenses on file in 3 states.

Which states has Dr. Gillian A. Ellis been licensed in?

Dmand AI has state licenses on file for Dr. Ellis in Florida (2010 to 2026), Louisiana (2008 to 2025) and Georgia (2009 to 2018).

Which hospitals is Dr. Gillian A. Ellis affiliated with?

Dr. Ellis is affiliated with Orlando Regional Medical Center. Dmand AI links Dr. Ellis to 3 more hospitals.

What medical group is Dr. Gillian A. Ellis part of?

Dr. Ellis is linked to Orlando Health Medical Group. Dmand AI links Dr. Ellis to 2 more medical groups.

Does Dr. Gillian A. Ellis accept Medicare?

Yes. CMS data shows Dr. Ellis billed Medicare for 691 services in 2024, and Dr. Ellis accepts Medicare assignment.

What is Dr. Gillian A. Ellis' MIPS score?

Dr. Ellis' MIPS final score for performance year 2024 is 80 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Gillian A. Ellis see?

CMS counts 339 Medicare patients who saw Dr. Ellis in 2024, with an average age of 77.

Is Dr. Gillian A. Ellis board certified?

Yes. Dr. Ellis is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Gillian A. Ellis bill to Medicare?

In 2024, Dr. Ellis' most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).

Where did Dr. Gillian A. Ellis go to medical school?

Dr. Ellis graduated from Ross University School of Medicine in 2003.

What drugs does Dr. Gillian A. Ellis prescribe most?

In 2024 Medicare Part D data, Dr. Ellis' most prescribed drugs by claims were Pantoprazole Sodium, Cefdinir and Albuterol Sulfate Hfa.

Has Dr. Gillian A. Ellis received payments from drug or device companies?

CMS Open Payments shows $284 in general payments to Dr. Ellis from 7 companies from 2016 to 2023. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.

How long has Dr. Gillian A. Ellis been practicing?

Dr. Ellis graduated from medical school in 2003, 23 years ago.

What insurance does Dr. Gillian A. Ellis accept?

Dr. Ellis is in network with 10 carriers, including Excellus BlueCross BlueShield, Aetna and Elevance. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.

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