Dr. Luay M. Almassalha, MD, PhD
- Part D claims, 2021
- 26
- Publications
- 46
- Hospital affiliations
- 2
- Industry payments
- $422
- Medical group
- 1
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Almassalha's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Luay M. Almassalha is an internist in Chicago, Illinois
Dr. Almassalha practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Almassalha's NPI, 1245790815, was assigned on March 20, 2019. Dr. Almassalha graduated from Northwestern University Feinberg Medical School in 2019. Dr. Almassalha holds Illinois license 125.073720.
- NPI
- 1245790815NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537493317
- NPI enumeration date
- March 20, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Luay M. Almassalha practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Almassalha's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. Luay M. Almassalha is affiliated with 2 sites of care and 1 medical group
Dr. Almassalha's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dr. Almassalha is also affiliated with Northwestern Medicine Palos Hospital. The medical group on file is Northwestern Medical Faculty Foundation.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Luay M. Almassalha's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Almassalha practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Luay M. Almassalha is one of 5,652 internists in Illinois
Internal medicine is Dr. Almassalha's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Almassalha is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Almassalha
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. Luay M. Almassalha's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Almassalha's median patient age at 74, with 50% women.
Dr. Almassalha's 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
- Women50%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Luay M. Almassalha wrote 26 Medicare Part D claims in 2021
In 2021, Dr. Almassalha wrote 26 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $292 in total drug cost.
Dr. Almassalha's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Luay M. Almassalha ranks in the 73rd percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Almassalha accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 84 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Almassalha, more than 73% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Almassalha ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 73rd percentile84 procedures
- Colonoscopy
- 67th percentile59 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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Dr. Luay M. Almassalha has 46 publications on record
Dmand AI links 46 papers to Dr. Almassalha, published from 2012 to 2025. 2024 was the busiest year, with 9. The most frequent topics are Chromatin, HeLa Cells and Cell Nucleus. Dr. Almassalha has published most often in bioRxiv. Dr. Almassalha's most frequent co-authors are Hariharan Subramanian, MD, Seth Feder, MD and Shohreh Shahabi, MD.
Dr. Almassalha's papers by year, 2016 to 2025
Topics Dr. Almassalha writes about most
- Chromatin
- HeLa Cells
- Cell Nucleus
- DNA
- Heterochromatin
- Microscopy
- Spectrum Analysis
- Transcription, Genetic
Dr. Almassalha's most frequent co-authors
- Hariharan Subramanian, MD11 shared papers
- Seth Feder, MD2 shared papers
- Shohreh Shahabi, MD2 shared papers
Recent publications by Dr. Almassalha
Adv Sci (Weinh)
Decreased DNA density is a better indicator of a nuclear bleb than lamin B loss (opens in a new tab)
J Cell Sci
J Cell Sci
See who Dr. Almassalha researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Almassalha works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Luay M. Almassalha received $422 in industry payments from 2022 to 2025
CMS Open Payments shows 6 general payments to Dr. Almassalha from 5 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $125.
General payments to Dr. Almassalha by program year, 2022 to 2025
Companies that paid Dr. Almassalha the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Luay M. Almassalha graduated from Northwestern University Feinberg Medical School
Dr. Almassalha graduated from Northwestern University Feinberg Medical School in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Luay M. Almassalha's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Luay M. Almassalha
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. Luay M. Almassalha's NPI number?
Dr. Luay M. Almassalha's NPI number is 1245790815. It was assigned on March 20, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Luay M. Almassalha?
Dr. Luay M. Almassalha is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Luay M. Almassalha practice?
Dr. Almassalha practices at 251 E Huron St, Chicago, IL 60611. Dr. Almassalha's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
What is Dr. Luay M. Almassalha's office phone number?
The practice phone on file for Dr. Almassalha is (312) 926-2000.
What is Dr. Luay M. Almassalha's medical license number?
Dr. Almassalha holds Illinois license 125.073720.
Which hospitals is Dr. Luay M. Almassalha affiliated with?
Dr. Almassalha practices at Northwestern Memorial Hospital in Chicago, Illinois. Dr. Almassalha is also affiliated with Northwestern Medicine Palos Hospital.
What medical group is Dr. Luay M. Almassalha part of?
Dr. Almassalha is linked to Northwestern Medical Faculty Foundation.
Does Dr. Luay M. Almassalha accept Medicare?
Yes. CMS lists Dr. Almassalha as accepting Medicare assignment.
Where did Dr. Luay M. Almassalha go to medical school?
Dr. Almassalha graduated from Northwestern University Feinberg Medical School in 2019.
What drugs does Dr. Luay M. Almassalha prescribe most?
In 2021 Medicare Part D data, Dr. Almassalha's most prescribed drugs by claims were Atorvastatin Calcium and Amlodipine Besylate.
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Has Dr. Luay M. Almassalha received payments from drug or device companies?
CMS Open Payments shows $422 in general payments to Dr. Almassalha from 5 companies from 2022 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Luay M. Almassalha been practicing?
Dr. Almassalha graduated from medical school in 2019, 7 years ago.
Does Dr. Luay M. Almassalha do research?
Dmand AI links 46 publications to Dr. Almassalha, published from 2012 to 2025.
Who does Dr. Luay M. Almassalha publish with?
Dr. Almassalha's most frequent co-authors are Hariharan Subramanian, MD (11 shared papers), Seth Feder, MD (2 shared papers) and Shohreh Shahabi, MD (2 shared papers).
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