Dr. Gregory L. Ortega, MD

  • Orange City, FL
  • Hematologist and oncologist
NPI1720037989PAC ID9032009386
Medicare services, 2024
70,399
Medicare patients, 2024
387
Part D claims, 2024
1,547
Publications
1
MIPS score, 2024
100
Practice address
2776 Enterprise Rd, Orange City, FL 32763
Practice phone
Call (386) 774-1223
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Mid-Florida Hematology & Oncology Centers PA

Orange City, Florida

See all 8 affiliations

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Dr. Gregory L. Ortega is a hematologist and oncologist in Orange City, Florida

Dr. Ortega practices at Mid-Florida Hematology & Oncology Centers PA in Orange City, Florida.

Dr. Ortega's NPI, 1720037989, was assigned on May 8, 2006. Dr. Ortega graduated from Universidad Nacional Pedro Henriquez Urena in 1979. Dr. Ortega holds Florida license ME41521.

NPI and contact details
Medicare PAC ID
9032009386
NPI enumeration date
May 8, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(386) 774-1223
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
73
Medical school graduation
1979

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

Dr. Gregory L. Ortega practices at Mid-Florida Hematology & Oncology Centers PA in Orange City, Florida

Dr. Ortega's primary practice is Mid-Florida Hematology & Oncology Centers PA, at 2776 Enterprise Rd, Orange City, FL 32763 in Volusia County. The practice phone is (386) 774-1223.

  • Mid-Florida Hematology & Oncology Centers PA
    2776 Enterprise Rd, Orange City, FL 32763 · Volusia CountyPhone(386) 774-1223

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

Dr. Gregory L. Ortega is affiliated with 7 sites of care and 1 medical group

Dr. Ortega's primary practice is Mid-Florida Hematology & Oncology Centers PA in Orange City, Florida. Dr. Ortega is also affiliated with AdventHealth Fish Memorial. The medical group on file is Mid Florida Cancer Centers. Dmand AI also links Dr. Ortega to 4 more hospitals and 1 group practice or clinic, each named with a free account.

See all 8 affiliations for Dr. Ortega

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

Dmand AI tracks the EHR system at Dr. Gregory L. Ortega's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ortega practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Mid-Florida Hematology & Oncology Centers PAAvailable with a free account
+6 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Gregory L. Ortega is one of 693 hematologists and oncologists in Florida

Hematology and oncology is Dr. Ortega's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Ortega is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Ortega's licenses on file in 3 states: Florida, Tennessee and Indiana.

Specialties and state licenses

  • Hematology and oncology, FloridaPrimaryLicense ME41521 · 1983 to 2026 · taxonomy 207RH0003X
  • Tennessee license1983 to 1992
  • Indiana license1982 to 1989

Clinical focus

Dmand AI lists breast cancer, chronic anemia, chronic embolism thrombosis, chronic leukemia, deep vein thrombosis (DVT), lung cancer, lymphoma and multiple myeloma among the conditions Dr. Ortega treats.

Hematologists and oncologists near Dr. Ortega

Counts of hematologists and oncologists 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. Gregory L. Ortega billed Medicare for 70,399 services in 2024

CMS data shows 70,399 Medicare services from Dr. Ortega across 45 procedure codes in 2024, for 387 Medicare patients. Medicare paid $445,885 for them.

Medicare services, 202470,399
Medicare patients387
Paid by Medicare$445,885
Procedure codes45

Dr. Ortega's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 25,8642024: 39,40952%
Other services
2023: 28,9522024: 22,01024%
Lab and pathology
2023: 5,0562024: 5,1672%
Tests and treatments
2023: 1,6422024: 1,6321%
Office and hospital visits
2023: 1,1832024: 1,05711%
Surgery
2023: 1,1532024: 98415%
Imaging
2023: 1552024: 14010%

Where Dr. Ortega's Medicare services took place, 2024

  • In an office70,341100%
  • In a facility580%

Dr. Ortega compared with the Florida median for hematologists and oncologists, 2024

  • Dr. Ortega
  • Florida median
Medicare services
70,399vs 697101.0 times
Medicare patients
387vs 21878% above
Part D claims
1,182vs 3413.5 times

Medians across 638 hematologists and oncologists in Florida with Dmand AI profiles that report each measure.

Dr. Ortega'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 Dr. Ortega

Need commercial claims for Dr. Ortega?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ortega and other hematologists and oncologists in Florida.

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

Dr. Gregory L. Ortega treated 387 Medicare patients in 2024, average age 77

CMS counts 387 Medicare patients who saw Dr. Ortega in 2024. The largest group is 75 to 84, with 160 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 2.01, 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. Ortega's median patient age at 72, with 61% women.

Medicare patients, 2024387
Average age77
Average risk score2.01
Also on Medicaid7%

Dr. Ortega's Medicare patients by age, 2024

Dr. Ortega's Medicare patients by sex, 2024

  • Women21455%
  • Men17345%

Chronic conditions among Dr. Ortega's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Chronic kidney disease53%
  4. Arthritis47%
  5. Ischemic heart disease46%
  6. Diabetes39%
  7. Cancer35%
  8. Atrial fibrillation32%

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

Dr. Ortega'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

  • Women61%
  • Men38%

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

Dr. Gregory L. Ortega wrote 1,547 Medicare Part D claims in 2024

In 2024, Dr. Ortega wrote 1,547 Medicare Part D claims for 231 patients. 58% of them were for generic drugs. CMS names the drug for 1,182 of them, across 49 drugs with 11 or more claims each, at $3,286,821 in total drug cost. In 2023, CMS named 1,136 claims across 37 drugs.

Part D claims, 20241,547
Drugs named by CMS49
Total drug cost$3.3M
Part D patients231

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

  • Generic901 claims58%
  • Brand-name646 claims42%

Dr. Ortega'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. Ortega's Part D claims, 2024

  • Opioids5%71 of 1,547 claims
  • Antibiotics5%84 of 1,547 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: 1,1362024: 1,1824%

Drugs named by CMS: 49 in 2024, 37 in 2023.

See all prescribing by Dr. Ortega

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. Gregory L. Ortega scored 100 out of 100 in Medicare's MIPS program for 2024

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

Accepts Medicare assignment
Yes

Dr. Ortega's MIPS scores, performance year 2024

  • 100of 100Final score
  • 91.5of 100Quality
  • 40of 100Improvement Activities

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

For MedTech and pharma teams

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Dr. Gregory L. Ortega has 1 publication on record

Dmand AI links 1 paper to Dr. Ortega in 2013. Dr. Ortega's most frequent co-authors are Lawrence B. Afrin, MD, David F. Claxton, MD and Solomon I. Hamburg, MD.

Papers1

Dr. Ortega's most frequent co-authors

Recent publications by Dr. Ortega

See all 1 publications and co-authors

See who Dr. Ortega researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ortega works with, so you can find a warm path to the right hematologists and oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Gregory L. Ortega received $13,853 in industry payments from 2016 to 2024

CMS Open Payments shows 37 general payments to Dr. Ortega from 17 drug and device companies from 2016 to 2024. Gifts make up the largest share, 89% of the total. Tosoh Bioscience, Inc. paid the most, $12,360. It also lists 1 research payment totaling $905 in 2017.

General payments to Dr. Ortega by program year, 2016 to 2024

General payments to Dr. Ortega by kind, 2016 to 2024

$13.9Kin total
  • Gifts$12,36089%
  • Food and beverage$9957%
  • Education$4984%

Companies that paid Dr. Ortega the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Ortega

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

Dr. Gregory L. Ortega has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Ortega, most recently Checkbook Top Doc in 2012.

Awards and honors for Dr. Ortega

  1. 2012
    • Checkbook Top Doc
  2. Undated
    • CMS Stage 1 2012

Source: Dmand AI Professional Profile Data

Dr. Gregory L. Ortega graduated from Universidad Nacional Pedro Henriquez Urena

Dr. Ortega graduated from Universidad Nacional Pedro Henriquez Urena in 1979.

  1. Medical schoolUniversidad Nacional Pedro Henriquez Urena
  2. Board certified in hematologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in medical oncologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Gregory L. Ortega accepts plans from 19 insurance carriers

Dr. Ortega is in network with 19 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Dr. Ortega accepts, by number of carriers

  1. HMO12
  2. Medicare12
  3. PPO12
  4. POS7
  5. EPO5
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Gregory L. Ortega'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 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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. Gregory L. Ortega

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. Gregory L. Ortega's NPI number?

Dr. Gregory L. Ortega's NPI number is 1720037989. It was assigned on May 8, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregory L. Ortega?

Dr. Gregory L. Ortega is a hematologist and oncologist in Orange City, Florida. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).

Where does Dr. Gregory L. Ortega practice?

Dr. Ortega practices at 2776 Enterprise Rd, Orange City, FL 32763. Dr. Ortega's primary practice is Mid-Florida Hematology & Oncology Centers PA in Orange City, Florida. Dmand AI also links Dr. Ortega to 4 hospitals and 1 group practice or clinic.

What is Dr. Gregory L. Ortega's office phone number?

The practice phone on file for Dr. Ortega is (386) 774-1223.

What is Dr. Gregory L. Ortega's medical license number?

Dr. Ortega holds Florida license ME41521, one of the licenses on file in 3 states.

Which states has Dr. Gregory L. Ortega been licensed in?

Dmand AI has state licenses on file for Dr. Ortega in Florida (1983 to 2026), Tennessee (1983 to 1992) and Indiana (1982 to 1989).

Which hospitals is Dr. Gregory L. Ortega affiliated with?

Dr. Ortega is affiliated with AdventHealth Fish Memorial. Dmand AI links Dr. Ortega to 4 more hospitals.

What medical group is Dr. Gregory L. Ortega part of?

Dr. Ortega is linked to Mid Florida Cancer Centers.

Does Dr. Gregory L. Ortega accept Medicare?

Yes. CMS data shows Dr. Ortega billed Medicare for 70,399 services in 2024, and Dr. Ortega accepts Medicare assignment.

What is Dr. Gregory L. Ortega's MIPS score?

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

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Gregory L. Ortega see?

CMS counts 387 Medicare patients who saw Dr. Ortega in 2024, with an average age of 77.

Is Dr. Gregory L. Ortega board certified?

Yes. Dr. Ortega is board certified in hematology by the American Board of Internal Medicine.

What services does Dr. Gregory L. Ortega bill to Medicare?

In 2024, Dr. Ortega's most billed Medicare services were injected or infused drug (J1439), medicare temporary code (Q0138) and injected or infused drug (J0897).

Where did Dr. Gregory L. Ortega go to medical school?

Dr. Ortega graduated from Universidad Nacional Pedro Henriquez Urena in 1979.

What drugs does Dr. Gregory L. Ortega prescribe most?

In 2024 Medicare Part D data, Dr. Ortega's most prescribed drugs by claims were Anastrozole, Eliquis and Acyclovir.

Has Dr. Gregory L. Ortega received payments from drug or device companies?

CMS Open Payments shows $13,853 in general payments to Dr. Ortega from 17 companies from 2016 to 2024. The largest total came from Tosoh Bioscience, Inc.

How long has Dr. Gregory L. Ortega been practicing?

Dr. Ortega graduated from medical school in 1979, 47 years ago.

Does Dr. Gregory L. Ortega do research?

Dmand AI links 1 publication to Dr. Ortega.

Who does Dr. Gregory L. Ortega publish with?

Dr. Ortega's most frequent co-authors are Lawrence B. Afrin, MD (1 shared paper), David F. Claxton, MD (1 shared paper) and Solomon I. Hamburg, MD (1 shared paper).

What insurance does Dr. Gregory L. Ortega accept?

Dr. Ortega is in network with 19 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.

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