Dr. Marc E. Delclos, MD

  • Houston, TX
  • Radiation oncologist
NPI1750497665PAC ID5698968683
Medicare services, 2024
3,120
Medicare patients, 2024
210
Part D claims, 2024
12
Publications
67
MIPS score, 2024
84
Practice address
1515 Holcombe Blvd, Houston, TX 77030
Professional email
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Personal email
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Mobile number
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Social profiles

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Dr. Marc E. Delclos is a radiation oncologist in Houston, Texas

Dr. Delclos practices at The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System.

Dr. Delclos' NPI, 1750497665, was assigned on August 22, 2006. Dr. Delclos graduated from Baylor College Of Medicine in 1992. Dr. Delclos' Texas license number on file is J4079.

NPI and contact details
Medicare PAC ID
5698968683
NPI enumeration date
August 22, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
60
Medical school graduation
1992

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

Dr. Marc E. Delclos practices at The University of Texas MD Anderson Cancer Center in Houston, Texas

Dr. Delclos' primary practice is The University of Texas MD Anderson Cancer Center, at 1515 Holcombe Blvd, Houston, TX 77030.

Source: Dmand AI Affiliation Data

Dr. Marc E. Delclos is affiliated with 1 site of care and 2 medical groups

Dr. Delclos' primary practice is The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System. The medical group on file is Physicians Referral Service. Dmand AI also links Dr. Delclos to 1 more medical group, named with a free account.

See all 3 affiliations for Dr. Delclos

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

Dmand AI tracks the EHR system at Dr. Marc E. Delclos' practice

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

EHR by site
SiteEHR vendor and product
The University of Texas MD Anderson Cancer CenterAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Marc E. Delclos is one of 401 radiation oncologists in Texas

Radiation oncology is Dr. Delclos' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Delclos is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Delclos' licenses on file in 3 states: Texas, Florida and Oklahoma.

Specialties and state licenses

  • Radiation oncology, TexasPrimaryLicense J4079 · 1993 to 2025 · taxonomy 2085R0001X
  • Florida licenseSince 2021
  • Oklahoma license2020 to 2021

Clinical focus

Dmand AI lists bone cancer radiation, cancer radiation-upper GI, colorectal cancer radiation, lung cancer radiation, pancreatic cancer radiation and prostate cancer radiation among the conditions Dr. Delclos treats.

Radiation oncologists near Dr. Delclos

Counts of radiation 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. Marc E. Delclos billed Medicare for 3,120 services in 2024

CMS data shows 3,120 Medicare services from Dr. Delclos across 17 procedure codes in 2024, for 210 Medicare patients. Medicare paid $186,643 for them. Every service was in an office.

Medicare services, 20243,120
Medicare patients210
Paid by Medicare$186,643
Procedure codes17

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

  • 2023
  • 2024
Other services
2023: 1,4412024: 1,5719%
Imaging
2023: 1,6772024: 1,34020%
Office and hospital visits
2023: 1452024: 20944%

Dr. Delclos compared with the Texas median for radiation oncologists, 2024

  • Dr. Delclos
  • Texas median
Medicare services
3,120vs 1,4722.1 times
Medicare patients
210vs 16428% above
Part D claims
12vs 4171% below

Medians across 370 radiation oncologists in Texas with Dmand AI profiles that report each measure.

Dr. Delclos' 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. Delclos

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

Dr. Marc E. Delclos treated 210 Medicare patients in 2024, average age 74

CMS counts 210 Medicare patients who saw Dr. Delclos in 2024. The largest group is 65 to 74, with 103 patients. 75% of them have cancer, and 75% have high blood pressure. Their average risk score is 1.88, 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. Delclos' median patient age at 74, with 23% women.

Medicare patients, 2024210
Average age74
Average risk score1.88

Dr. Delclos' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Delclos' Medicare patients by sex, 2024

  • Women6330%
  • Men14770%

Chronic conditions among Dr. Delclos' Medicare patients, 2024

  1. Cancer75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Arthritis48%
  5. Ischemic heart disease41%
  6. Diabetes32%
  7. COPD29%
  8. Anxiety26%

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

Dr. Delclos' patients across all payers

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

Patient panel by age, all payers

Median age 74

Patient panel by sex, all payers

  • Women23%
  • Men75%

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

Dr. Marc E. Delclos wrote 12 Medicare Part D claims in 2024

In 2024, Dr. Delclos wrote 12 Medicare Part D claims. They cover 1 drug, with $170 in total drug cost. In 2018, CMS named 15 claims across 1 drug.

Part D claims, 202412
Drugs named by CMS1
Total drug cost$170

Dr. Delclos' most prescribed drugs by claims, 2022

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, 2018 to 2022

  • 2018
  • 2022
Claims for drugs CMS names
2018: 152022: 1220%

Drugs named by CMS: 1 in 2022, 1 in 2018.

See all prescribing by Dr. Delclos

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. Marc E. Delclos scored 84 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Delclos for performance year 2024, reported as part of a group. Dr. Delclos accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Delclos as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Delclos' MIPS scores, performance year 2024

  • 84of 100Final score
  • 70.8of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 68of 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

For MedTech and pharma teams

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Dr. Marc E. Delclos has 67 publications on record

Dmand AI links 67 papers to Dr. Delclos, published from 2006 to 2021. 2011 was the busiest year, with 8. The most frequent topics are Radiotherapy Dosage, Fluorouracil and Antineoplastic Combined Chemotherapy Protocols. Dr. Delclos has published most often in Int J Radiat Oncol Biol Phys. Dr. Delclos' most frequent co-authors are Prajnan Das, MD, MPH, Sunil Krishnan, MD and Miguel A. Rodriguez-Bigas, MD.

Papers67
Years published2006 to 2021

Dr. Delclos' papers by year, 2009 to 2021

Topics Dr. Delclos writes about most

  • Radiotherapy Dosage
  • Fluorouracil
  • Antineoplastic Combined Chemotherapy Protocols
  • Rectal Neoplasms
  • Adenocarcinoma
  • Deoxycytidine
  • Anus Neoplasms
  • Capecitabine

Dr. Delclos' most frequent co-authors

Recent publications by Dr. Delclos

See all 67 publications and co-authors

See who Dr. Delclos researches with

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

How network discovery works

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

Dr. Marc E. Delclos received $383 in industry payments from 2017 to 2023

CMS Open Payments shows 4 general payments to Dr. Delclos from 4 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $125.

General payments to Dr. Delclos by program year, 2017 to 2023

Companies that paid Dr. Delclos the most, 2017 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Delclos

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

Dr. Marc E. Delclos graduated from Baylor College Of Medicine

Dr. Delclos graduated from Baylor College Of Medicine in 1992.

  1. Medical schoolBaylor College Of Medicine
  2. Board certified in radiation oncologyAmerican Board of Radiology

Source: Dmand AI Professional Profile Data

Dr. Marc E. Delclos accepts plans from 11 insurance carriers

Dr. Delclos is in network with 11 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Excellus BlueCross BlueShield
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Cigna
  • Elevance
  • Aspirus Health Plan
  • Blue Cross and Blue Shield of Kansas City
  • +3 more carriersWith a free account

Plan types Dr. Delclos accepts, by number of carriers

  1. PPO8
  2. HMO6
  3. Medicare6
  4. POS5
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Marc E. Delclos'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)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)
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. Marc E. Delclos

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. Marc E. Delclos' NPI number?

Dr. Marc E. Delclos' NPI number is 1750497665. It was assigned on August 22, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Marc E. Delclos?

Dr. Marc E. Delclos is a radiation oncologist in Houston, Texas. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Marc E. Delclos practice?

Dr. Delclos practices at 1515 Holcombe Blvd, Houston, TX 77030. Dr. Delclos' primary practice is The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System. Dmand AI also links Dr. Delclos to 1 medical group.

What is Dr. Marc E. Delclos' medical license number?

Dr. Delclos' Texas license number on file is J4079, one of the licenses on file in 3 states.

Which states has Dr. Marc E. Delclos been licensed in?

Dmand AI has state licenses on file for Dr. Delclos in Texas (1993 to 2025), Florida (since 2021) and Oklahoma (2020 to 2021).

Which hospitals is Dr. Marc E. Delclos affiliated with?

Dr. Delclos practices at The University of Texas MD Anderson Cancer Center in Houston, Texas.

What medical group is Dr. Marc E. Delclos part of?

Dr. Delclos is linked to Physicians Referral Service. Dmand AI links Dr. Delclos to 1 more medical group.

Does Dr. Marc E. Delclos accept Medicare?

Yes. CMS data shows Dr. Delclos billed Medicare for 3,120 services in 2024, and Dr. Delclos accepts Medicare assignment.

Does Dr. Marc E. Delclos offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Delclos as offering telehealth services.

What is Dr. Marc E. Delclos' MIPS score?

Dr. Delclos' MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Marc E. Delclos see?

CMS counts 210 Medicare patients who saw Dr. Delclos in 2024, with an average age of 74.

Is Dr. Marc E. Delclos board certified?

Yes. Dr. Delclos is board certified in radiation oncology by the American Board of Radiology.

What services does Dr. Marc E. Delclos bill to Medicare?

In 2024, Dr. Delclos' most billed Medicare services were medicare service (G6002), radiation oncology (77427) and radiation oncology (77300).

Where did Dr. Marc E. Delclos go to medical school?

Dr. Delclos graduated from Baylor College Of Medicine in 1992.

What drugs does Dr. Marc E. Delclos prescribe most?

In 2022 Medicare Part D data, Dr. Delclos' most prescribed drugs by claims were Alfuzosin HCl ER.

Has Dr. Marc E. Delclos received payments from drug or device companies?

CMS Open Payments shows $383 in general payments to Dr. Delclos from 4 companies from 2017 to 2023. The largest total came from Astellas Pharma US Inc.

How long has Dr. Marc E. Delclos been practicing?

Dr. Delclos graduated from medical school in 1992, 34 years ago.

Does Dr. Marc E. Delclos do research?

Dmand AI links 67 publications to Dr. Delclos, published from 2006 to 2021.

Who does Dr. Marc E. Delclos publish with?

Dr. Delclos' most frequent co-authors are Prajnan Das, MD, MPH (33 shared papers), Sunil Krishnan, MD (29 shared papers) and Miguel A. Rodriguez-Bigas, MD (18 shared papers).

What insurance does Dr. Marc E. Delclos accept?

Dr. Delclos is in network with 11 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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