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Dr. Layla Cristal Barrera, DO
NPI1447788575PAC ID5294151130
- Medicare services, 2024
- 782
- Medicare patients, 2024
- 250
- Part D claims, 2024
- 56
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- Health Sciences Center Suny, Stony Brook, NY 11794
- Practice phone
- Call (631) 444-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Barrera'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. Layla Cristal Barrera is an internist in Stony Brook, New York
Dr. Barrera practices at Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University.
Dr. Barrera's NPI, 1447788575, was assigned on June 2, 2017. Dr. Barrera graduated from Touro College of Osteopathic Medicine in 2017. Dr. Barrera holds New York license 305259.
NPI and contact details
- NPI
- 1447788575NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294151130
- NPI enumeration date
- June 2, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 444-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Layla Cristal Barrera practices at 2 locations in Stony Brook, New York
Dr. Barrera's primary practice is Stony Brook University Hospital, at Health Sciences Center Suny, Stony Brook, NY 11794 in Suffolk County. The practice phone is (631) 444-4000. Dr. Barrera also practices at Stony Brook University Hospital, 101 Nicolls Rd, Stony Brook, NY 11794.
- Stony Brook University HospitalPrimaryHealth Sciences Center Suny, Stony Brook, NY 11794 · Suffolk CountyPhone(631) 444-4000
- Stony Brook University Hospital101 Nicolls Rd, Stony Brook, NY 11794 · Suffolk CountyPhone(631) 444-4100
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Layla Cristal Barrera is affiliated with 4 sites of care and 3 medical groups
Dr. Barrera's primary practice is Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University. The medical group on file is Stony Brook Internists. Dmand AI also links Dr. Barrera to 2 more group practices and clinics, 2 medical groups and 1 clinical lab, each named with a free account.
Stony Brook Internists2 group practices and clinicsNames with a free account2 medical groupsNames with a free account1 clinical labName with a free account
See all 7 affiliations for Dr. BarreraSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Layla Cristal Barrera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barrera practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stony Brook University Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Layla Cristal Barrera is one of 9,643 internists in New York
Internal medicine is Dr. Barrera's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Barrera is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Barrera
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
9,643internists in New York88internists in Stony Brook73internists at Stony Brook University Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Layla Cristal Barrera billed Medicare for 782 services in 2024
CMS data shows 782 Medicare services from Dr. Barrera across 4 procedure codes in 2024, for 250 Medicare patients. Medicare paid $60,085 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024782
Medicare patients250
Paid by Medicare$60,085
Procedure codes4
Dr. Barrera's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2242024: 782249%
Dr. Barrera compared with the New York median for internists, 2024
- Dr. Barrera
- New York median
- Medicare services
- 782vs 42684% above
- Medicare patients
- 250vs 15858% above
- Part D claims
- 931vs 62250% above
Medians across 9,428 internists in New York with Dmand AI profiles that report each measure.
Dr. Barrera'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.
Need commercial claims for Dr. Barrera?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barrera and other internists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Layla Cristal Barrera treated 250 Medicare patients in 2024, average age 77
CMS counts 250 Medicare patients who saw Dr. Barrera in 2024. The largest group is 75 to 84, with 93 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.72, 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. Barrera's median patient age at 67, with 56% women.
Medicare patients, 2024250
Average age77
Average risk score2.72
Also on Medicaid28%
Dr. Barrera's Medicare patients by age, 2024
Dr. Barrera's Medicare patients by sex, 2024
- Women14759%
- Men10341%
Chronic conditions among Dr. Barrera's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Ischemic heart disease58%
- Mood disorders56%
- Anxiety51%
- Depression51%
- Chronic kidney disease50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barrera's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Layla Cristal Barrera wrote 56 Medicare Part D claims in 2024
In 2024, Dr. Barrera wrote 56 Medicare Part D claims for 27 patients. 93% of them were for generic drugs. They cover 32 drugs, with $52,080 in total drug cost. In 2022, CMS named 858 claims across 36 drugs.
Part D claims, 202456
Drugs named by CMS32
Total drug cost$52,080
Part D patients27
Dr. Barrera's Part D claims by kind of drug, 2024
- Generic52 claims93%
- Brand-name and other4 claims7%
Dr. Barrera's most prescribed drugs by claims, 2023
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. Barrera's Part D claims, 2024
- Antibiotics29%16 of 56 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 8582023: 9319%
Drugs named by CMS: 32 in 2023, 36 in 2022.
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 Dr. Layla Cristal Barrera takes part in Medicare
Dr. Barrera 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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Dr. Layla Cristal Barrera has 1 publication on record
Dmand AI links 1 paper to Dr. Barrera. Dr. Barrera's most frequent co-authors are Feyzullah Aksan, Alia Hasham, MD and Sunit P. Jariwala, MD.
Papers1
Dr. Barrera's most frequent co-authors
- Feyzullah Aksan1 shared paper
- Alia Hasham, MD1 shared paper
- Sunit P. Jariwala, MD1 shared paper
Recent publications by Dr. Barrera
See who Dr. Barrera researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Barrera 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. Layla Cristal Barrera received $933 in industry payments from 2021 to 2024
CMS Open Payments shows 47 general payments to Dr. Barrera from 18 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $136.
General payments to Dr. Barrera by program year, 2021 to 2024
Companies that paid Dr. Barrera the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Layla Cristal Barrera graduated from Touro College of Osteopathic Medicine
Dr. Barrera graduated from Touro College of Osteopathic Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Layla Cristal Barrera'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (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. Layla Cristal Barrera
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. Layla Cristal Barrera's NPI number?
Dr. Layla Cristal Barrera's NPI number is 1447788575. It was assigned on June 2, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Layla Cristal Barrera?
Dr. Layla Cristal Barrera is an internist in Stony Brook, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Layla Cristal Barrera practice?
Dr. Barrera practices at Health Sciences Center Suny, Stony Brook, NY 11794. Dr. Barrera also practices at 101 Nicolls Rd, Stony Brook, NY 11794. Dr. Barrera's primary practice is Stony Brook University Hospital in Stony Brook, New York, part of Stony Brook University. Dmand AI also links Dr. Barrera to 2 group practices and clinics, 2 medical groups and 1 clinical lab.
What is Dr. Layla Cristal Barrera's office phone number?
The practice phone on file for Dr. Barrera is (631) 444-4000.
What is Dr. Layla Cristal Barrera's medical license number?
Dr. Barrera holds New York license 305259.
Which hospitals is Dr. Layla Cristal Barrera affiliated with?
Dr. Barrera practices at Stony Brook University Hospital in Stony Brook, New York.
What medical group is Dr. Layla Cristal Barrera part of?
Dr. Barrera is linked to Stony Brook Internists. Dmand AI links Dr. Barrera to 2 more medical groups.
Does Dr. Layla Cristal Barrera accept Medicare?
Yes. CMS data shows Dr. Barrera billed Medicare for 782 services in 2024, and Dr. Barrera accepts Medicare assignment.
How many Medicare patients does Dr. Layla Cristal Barrera see?
CMS counts 250 Medicare patients who saw Dr. Barrera in 2024, with an average age of 77.
What services does Dr. Layla Cristal Barrera bill to Medicare?
In 2024, Dr. Barrera's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99222).
Show 6 more questionsShow fewer questions
Where did Dr. Layla Cristal Barrera go to medical school?
Dr. Barrera graduated from Touro College of Osteopathic Medicine in 2017.
What drugs does Dr. Layla Cristal Barrera prescribe most?
In 2023 Medicare Part D data, Dr. Barrera's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Layla Cristal Barrera received payments from drug or device companies?
CMS Open Payments shows $933 in general payments to Dr. Barrera from 18 companies from 2021 to 2024. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Layla Cristal Barrera been practicing?
Dr. Barrera graduated from medical school in 2017, 9 years ago.
Does Dr. Layla Cristal Barrera do research?
Dmand AI links 1 publication to Dr. Barrera.
Who does Dr. Layla Cristal Barrera publish with?
Dr. Barrera's most frequent co-authors are Feyzullah Aksan (1 shared paper), Alia Hasham, MD (1 shared paper) and Sunit P. Jariwala, MD (1 shared paper).
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