Alec Block

  • Maywood, IL
  • Radiation oncologist
NPI1124375274PAC ID5597066308
Medicare services, 2024
1,567
Medicare patients, 2024
203
Part D claims, 2024
177
Publications
29
Clinical trials
2
Practice address
2160 S 1st Avenue, Maywood, IL 60153
Practice phone
Call (708) 216-3299
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Loyola Medicine Pediatric Mobile Health Unit

Mobile Lab · Maywood, Illinois

See all 3 affiliations

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Alec Block is a radiation oncologist in Maywood, Illinois

Alec Block practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois.

Alec Block's NPI, 1124375274, was assigned on August 8, 2012. Alec Block graduated from Loyola University of Chicago, Stritch School of Medicine in 2012. Alec Block holds Illinois license 036142638.

NPI and contact details
Medicare PAC ID
5597066308
NPI enumeration date
August 8, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(708) 216-3299
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
40
Medical school graduation
2012

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

Alec Block practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois

Alec Block's primary practice is Loyola Medicine Pediatric Mobile Health Unit, at 2160 S 1st Avenue, Maywood, IL 60153. The practice phone is (708) 216-3299.

  • Loyola Medicine Pediatric Mobile Health Unit
    2160 S 1st Avenue, Maywood, IL 60153Phone(708) 216-3299

Source: Dmand AI Affiliation Data

Alec Block is affiliated with 2 sites of care and 1 medical group

Alec Block's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Alec Block is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Alec Block's employer is on file too: a clinical lab.

See all 3 affiliations for Alec Block

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

Dmand AI tracks the EHR system at Alec Block's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Alec Block practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Loyola Medicine Pediatric Mobile Health UnitAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Alec Block is one of 243 radiation oncologists in Illinois

Radiation oncology is Alec Block's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Alec Block is licensed in Illinois.

Specialties and state licenses

  • Radiation oncology, IllinoisPrimaryLicense 125061878 · taxonomy 2085R0001X

Radiation oncologists near Alec Block

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

Alec Block billed Medicare for 1,567 services in 2024

CMS data shows 1,567 Medicare services from Alec Block across 12 procedure codes in 2024, for 203 Medicare patients. Medicare paid $109,233 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,567
Medicare patients203
Paid by Medicare$109,233
Procedure codes12

Alec Block's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 1,2342024: 1,3358%
Office and hospital visits
2023: 1852024: 21416%
Other services
2023: 322024: 1844%
Surgery
2023: 202024: 0100%

Alec Block compared with the Illinois median for radiation oncologists, 2024

  • Alec Block
  • Illinois median
Medicare services
1,567vs 1,4597% above
Medicare patients
203vs 17615% above
Part D claims
115vs 343.4 times

Medians across 231 radiation oncologists in Illinois with Dmand AI profiles that report each measure.

Alec Block'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.

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

Alec Block treated 203 Medicare patients in 2024, average age 74

CMS counts 203 Medicare patients who saw Alec Block in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.12, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Alec Block's median patient age at 71, with 32% women.

Medicare patients, 2024203
Average age74
Average risk score2.12
Also on Medicaid11%

Alec Block's Medicare patients by age, 2024

Alec Block's Medicare patients by sex, 2024

  • Women7939%
  • Men12461%

Chronic conditions among Alec Block's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis40%
  4. Ischemic heart disease35%
  5. Cancer33%
  6. Diabetes32%
  7. Anxiety29%
  8. Chronic kidney disease28%

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

Alec Block's patients across all payers

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

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women32%
  • Men67%

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

Alec Block wrote 177 Medicare Part D claims in 2024

In 2024, Alec Block wrote 177 Medicare Part D claims for 54 patients. 94% of them were for generic drugs. CMS names the drug for 115 of them, across 2 drugs with 11 or more claims each, at $3,737 in total drug cost. In 2023, CMS named 134 claims across 4 drugs.

Part D claims, 2024177
Drugs named by CMS2
Total drug cost$3,737
Part D patients54

Alec Block's Part D claims by kind of drug, 2024

  • Generic167 claims94%
  • Brand-name and other10 claims6%

Alec Block'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 Alec Block's Part D claims, 2024

  • Opioids44%77 of 177 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: 1342024: 11514%

Drugs named by CMS: 2 in 2024, 4 in 2023.

See all prescribing by Alec Block

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

How Alec Block takes part in Medicare

Alec Block accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Alec Block has 29 publications on record

Dmand AI links 29 papers to Alec Block, published from 2012 to 2025. 2016 was the busiest year, with 5. The most frequent topics are Prostatic Neoplasms, Brachytherapy and Endometrial Neoplasms. Alec Block has published most often in Int J Radiat Oncol Biol Phys. Alec Block's most frequent co-authors are Matthew Mark Harkenrider, MD, Abhishek Ashok Solanki, MD and James S. Welsh, MD, MS.

Papers29
Years published2012 to 2025

Alec Block's papers by year, 2015 to 2025

Topics Alec Block writes about most

  • Prostatic Neoplasms
  • Brachytherapy
  • Endometrial Neoplasms
  • Radiotherapy, Image-Guided
  • Radiotherapy Planning, Computer-Assisted
  • Analysis of Variance
  • Feasibility Studies
  • Head and Neck Neoplasms

Alec Block's most frequent co-authors

Recent publications by Alec Block

See all 29 publications and co-authors

See who Alec Block researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Alec Block 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

Alec Block has worked on 2 clinical trials

Dmand AI links Alec Block to 2 clinical trials. 2 are still active or recruiting. Conditions studied include Oropharyngeal Neoplasms, Salivary Gland Neoplasms and Pharyngeal Neoplasms.

Clinical trials with Alec Block by phase

  1. NonePhase 1: no trials
  2. 1Phase 2: 1 trial
  3. 1Phase 2/3: 1 trial
  4. NonePhase 3: no trials
  5. NonePhase 4: no trials

Conditions in Alec Block's trials

  • Oropharyngeal Neoplasms
  • Salivary Gland Neoplasms
  • Pharyngeal Neoplasms
  • Salivary Gland Diseases

Investigators on the most trials with Alec Block

Recent clinical trials with Alec Block

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Alec Block received $191 in industry payments from 2021 to 2025

CMS Open Payments shows 7 general payments to Alec Block from 3 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Carl Zeiss Meditec USA, Inc. paid the most, $122.

General payments to Alec Block by program year, 2021 to 2025

Companies that paid Alec Block the most, 2021 to 2025

Share is of all general payments to this clinician.

See all payments to Alec Block

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

Alec Block graduated from Loyola University of Chicago, Stritch School of Medicine

Alec Block graduated from Loyola University of Chicago, Stritch School of Medicine in 2012.

  1. Medical schoolLoyola University of Chicago, Stritch School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Alec Block'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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile 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 Alec Block

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

What is Alec Block's NPI number?

Alec Block's NPI number is 1124375274. It was assigned on August 8, 2012, and it is active in the NPI Registry.

What does Alec Block specialize in?

Alec Block is a radiation oncologist in Maywood, Illinois. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Alec Block practice?

Alec Block practices at 2160 S 1st Avenue, Maywood, IL 60153. Alec Block's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois.

What is Alec Block's office phone number?

The practice phone on file for Alec Block is (708) 216-3299.

What is Alec Block's medical license number?

Alec Block holds Illinois license 036142638.

Which hospitals is Alec Block affiliated with?

Alec Block is affiliated with Loyola University Medical Center.

What medical group is Alec Block part of?

Alec Block is linked to Loyola University Medical Center.

Does Alec Block accept Medicare?

Yes. CMS data shows Alec Block billed Medicare for 1,567 services in 2024, and Alec Block accepts Medicare assignment.

How many Medicare patients does Alec Block see?

CMS counts 203 Medicare patients who saw Alec Block in 2024, with an average age of 74.

What services does Alec Block bill to Medicare?

In 2024, Alec Block's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and office visit, established patient (99213).

Show 6 more questionsShow fewer questions

Where did Alec Block go to medical school?

Alec Block graduated from Loyola University of Chicago, Stritch School of Medicine in 2012.

What drugs does Alec Block prescribe most?

In 2024 Medicare Part D data, Alec Block's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Lidocaine HCl Viscous.

Has Alec Block received payments from drug or device companies?

CMS Open Payments shows $191 in general payments to Alec Block from 3 companies from 2021 to 2025. The largest total came from Carl Zeiss Meditec USA, Inc.

How long has Alec Block been practicing?

Alec Block graduated from medical school in 2012, 14 years ago.

Does Alec Block do research?

Dmand AI links 29 publications to Alec Block, published from 2012 to 2025. Alec Block has worked on 2 clinical trials.

Who does Alec Block publish with?

Alec Block's most frequent co-authors are Matthew Mark Harkenrider, MD (15 shared papers), Abhishek Ashok Solanki, MD (6 shared papers) and James S. Welsh, MD, MS (6 shared papers).

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