Laya Nasrollah

  • Ventura, CA
  • Gastroenterologist
NPI1558673566PAC ID8921391137
Medicare services, 2024
2,420
Medicare patients, 2024
829
Part D claims, 2024
567
Publications
7
Hospital affiliations
1
Practice address
168 N Brent St, Ventura, CA 93003
Practice phone
Call (805) 643-5438
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Plaza Surgical Center, Inc.

Ventura, California

See all 8 affiliations

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Laya Nasrollah is a gastroenterologist in Ventura, California

Laya Nasrollah practices at Plaza Surgical Center, Inc. in Ventura, California.

Laya Nasrollah's NPI, 1558673566, was assigned on July 7, 2010. Laya Nasrollah graduated from UTMB Health in 2010. Laya Nasrollah holds California license A142119.

NPI and contact details
Medicare PAC ID
8921391137
NPI enumeration date
July 7, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(805) 643-5438
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
42
Medical school graduation
2010

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

Laya Nasrollah practices at Plaza Surgical Center, Inc. in Ventura, California

Laya Nasrollah's primary practice is Plaza Surgical Center, Inc., at 168 N Brent St, Ventura, CA 93003 in Ventura County. The practice phone is (805) 643-5438.

  • Plaza Surgical Center, Inc.
    168 N Brent St, Ventura, CA 93003 · Ventura CountyPhone(805) 643-5438

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

Laya Nasrollah is affiliated with 5 sites of care and 3 medical groups

Laya Nasrollah's primary practice is Plaza Surgical Center, Inc. in Ventura, California. Laya Nasrollah is also affiliated with Community Memorial Hospital - Ventura. The medical group on file is Ventura County Medical Center. Dmand AI also links Laya Nasrollah to 3 more group practices and clinics and 2 medical groups, each named with a free account.

See all 8 affiliations for Laya Nasrollah

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

Dmand AI tracks the EHR system at Laya Nasrollah's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Laya Nasrollah practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Plaza Surgical Center, Inc.Available with a free account
+4 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Laya Nasrollah is one of 1,977 gastroenterologists in California

Gastroenterology is Laya Nasrollah's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Laya Nasrollah is board certified in gastroenterology by the American Board of Internal Medicine. Laya Nasrollah is licensed in California.

Specialties and state licenses

  • Gastroenterology, CaliforniaPrimaryLicense A142119 · 2016 to 2027 · taxonomy 207RG0100X

Clinical focus

Dmand AI lists acid reflux, acute gastroduodenitis, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver and gastroduodenitis among the conditions Laya Nasrollah treats.

Gastroenterologists near Laya Nasrollah

Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.

1,977gastroenterologists in California
8gastroenterologists in Ventura

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Laya Nasrollah billed Medicare for 2,420 services in 2024

CMS data shows 2,420 Medicare services from Laya Nasrollah across 24 procedure codes in 2024, for 829 Medicare patients. Medicare paid $170,459 for them.

Medicare services, 20242,420
Medicare patients829
Paid by Medicare$170,459
Procedure codes24

Laya Nasrollah's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3072024: 1,437368%
Surgery
2023: 4702024: 5109%
Other services
2023: 3132024: 47351%

Where Laya Nasrollah's Medicare services took place, 2024

  • In an office1,64768%
  • In a facility77332%

Laya Nasrollah compared with the California median for gastroenterologists, 2024

  • Laya Nasrollah
  • California median
Medicare services
2,420vs 5864.1 times
Medicare patients
829vs 3022.7 times
Part D claims
415vs 3809% above

Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.

Laya Nasrollah'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 Laya Nasrollah

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

Laya Nasrollah treated 829 Medicare patients in 2024, average age 72

CMS counts 829 Medicare patients who saw Laya Nasrollah in 2024. The largest group is 65 to 74, with 444 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 33% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Laya Nasrollah's median patient age at 63, with 56% women.

Medicare patients, 2024829
Average age72
Average risk score1.35
Also on Medicaid33%

Laya Nasrollah's Medicare patients by age, 2024

Laya Nasrollah's Medicare patients by sex, 2024

  • Women50661%
  • Men32339%

Chronic conditions among Laya Nasrollah's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis50%
  4. Diabetes33%
  5. Mood disorders30%
  6. Anxiety28%
  7. Depression28%
  8. Ischemic heart disease23%

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

Laya Nasrollah's patients across all payers

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

Patient panel by age, all payers

Median age 63

Patient panel by sex, all payers

  • Women56%
  • Men43%

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

Laya Nasrollah wrote 567 Medicare Part D claims in 2024

In 2024, Laya Nasrollah wrote 567 Medicare Part D claims for 205 patients. 74% of them were for generic drugs. CMS names the drug for 415 of them, across 12 drugs with 11 or more claims each, at $121,695 in total drug cost. In 2023, CMS named 557 claims across 15 drugs.

Part D claims, 2024567
Drugs named by CMS12
Total drug cost$121,695
Part D patients205

Laya Nasrollah's Part D claims by kind of drug, 2024

  • Generic420 claims74%
  • Brand-name147 claims26%

Laya Nasrollah'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 Laya Nasrollah's Part D claims, 2024

  • Antibiotics3%17 of 567 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: 5572024: 41525%

Drugs named by CMS: 12 in 2024, 15 in 2023.

See all prescribing by Laya Nasrollah

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

Laya Nasrollah ranks in the 95th percentile for colonoscopy in Medicare

Laya Nasrollah accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Laya Nasrollah as offering telehealth. CMS counts 236 procedures of colonoscopy by Laya Nasrollah, more than 95% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Laya Nasrollah ranks in Medicare procedure volume

Colonoscopy
95th percentile236 procedures
Upper gastrointestinal (GI) endoscopy for acid reflux
90th percentile205 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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Laya Nasrollah has 7 publications on record

Dmand AI links 7 papers to Laya Nasrollah, published from 2014 to 2020. 2014 was the busiest year, with 2. The most frequent topics are Gastroesophageal Reflux and Sleep. Laya Nasrollah's most frequent co-authors are Deborah E. Carlson, MD, Stephen D. Covington, MD and Ronnie Fass, MD.

Papers7
Years published2014 to 2020

Laya Nasrollah's papers by year, 2014 to 2020

Topics Laya Nasrollah writes about most

  • Gastroesophageal Reflux
  • Sleep

Laya Nasrollah's most frequent co-authors

Recent publications by Laya Nasrollah

See all 7 publications and co-authors

See who Laya Nasrollah researches with

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

How network discovery works

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

Laya Nasrollah received $2,589 in industry payments from 2016 to 2025

CMS Open Payments shows 84 general payments to Laya Nasrollah from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Covidien LP paid the most, $1,067.

General payments to Laya Nasrollah by program year, 2016 to 2025

General payments to Laya Nasrollah by kind, 2016 to 2025

$2.6Kin total
  • Food and beverage$1,70766%
  • Travel and lodging$86433%
  • Education$181%

Companies that paid Laya Nasrollah the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Laya Nasrollah

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

Laya Nasrollah graduated from UTMB Health

Laya Nasrollah graduated from UTMB Health in 2010. Laya Nasrollah is a member of ASGE.

  1. Medical schoolUTMB Health
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Laya Nasrollah accepts plans from 8 insurance carriers

Laya Nasrollah is in network with 8 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Elevance
  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare
  • Humana

Plan types Laya Nasrollah accepts, by number of carriers

  1. Medicare7
  2. PPO6
  3. HMO4
  4. POS3
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Laya Nasrollah'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)Doctors and Clinicians Utilization Data (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 Laya Nasrollah

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

What is Laya Nasrollah's NPI number?

Laya Nasrollah's NPI number is 1558673566. It was assigned on July 7, 2010, and it is active in the NPI Registry.

What does Laya Nasrollah specialize in?

Laya Nasrollah is a gastroenterologist in Ventura, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Laya Nasrollah practice?

Laya Nasrollah practices at 168 N Brent St, Ventura, CA 93003. Laya Nasrollah's primary practice is Plaza Surgical Center, Inc. in Ventura, California. Dmand AI also links Laya Nasrollah to 3 group practices and clinics and 2 medical groups.

What is Laya Nasrollah's office phone number?

The practice phone on file for Laya Nasrollah is (805) 643-5438.

What is Laya Nasrollah's medical license number?

Laya Nasrollah holds California license A142119.

Which hospitals is Laya Nasrollah affiliated with?

Laya Nasrollah is affiliated with Community Memorial Hospital - Ventura.

What medical group is Laya Nasrollah part of?

Laya Nasrollah is linked to Ventura County Medical Center. Dmand AI links Laya Nasrollah to 2 more medical groups.

Does Laya Nasrollah accept Medicare?

Yes. CMS data shows Laya Nasrollah billed Medicare for 2,420 services in 2024, and Laya Nasrollah accepts Medicare assignment.

Does Laya Nasrollah offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Laya Nasrollah as offering telehealth services.

How many Medicare patients does Laya Nasrollah see?

CMS counts 829 Medicare patients who saw Laya Nasrollah in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Laya Nasrollah board certified?

Yes. Laya Nasrollah is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Laya Nasrollah bill to Medicare?

In 2024, Laya Nasrollah's most billed Medicare services were care management and other visits (99458), medicare service (G0500) and care management and other visits (99439).

Where did Laya Nasrollah go to medical school?

Laya Nasrollah graduated from UTMB Health in 2010.

What drugs does Laya Nasrollah prescribe most?

In 2024 Medicare Part D data, Laya Nasrollah's most prescribed drugs by claims were Sod Sulf-Potass Sulf-Mag Sulf, Omeprazole and Linzess.

Has Laya Nasrollah received payments from drug or device companies?

CMS Open Payments shows $2,589 in general payments to Laya Nasrollah from 22 companies from 2016 to 2025. The largest total came from Covidien LP.

How long has Laya Nasrollah been practicing?

Laya Nasrollah graduated from medical school in 2010, 16 years ago.

Does Laya Nasrollah do research?

Dmand AI links 7 publications to Laya Nasrollah, published from 2014 to 2020.

Who does Laya Nasrollah publish with?

Laya Nasrollah's most frequent co-authors are Deborah E. Carlson, MD (2 shared papers), Stephen D. Covington, MD (2 shared papers) and Ronnie Fass, MD (2 shared papers).

What insurance does Laya Nasrollah accept?

Laya Nasrollah is in network with 8 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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