NPPES file of Aug 9, 2026

Laya Nasrollah

Gastroenterology Physician · Camarillo, CA

Laya Nasrollah is a gastroenterology physician with a practice address in Camarillo, California, and NPI 1558673566, issued on Jul 7, 2010. Check the license (California A142119, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558673566
Name
Laya Nasrollah
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
A142119 CA
Self-reported in NPPES; status is on the state search
Practice location
5800 Santa Rosa RD Ste 149, Camarillo, CA 93012
Phone
(805) 469-8900
Enumerated
Jul 7, 2010
Record last updated
Jul 17, 2023
Fax
(805) 469-8920
Medicare enrollment
Enrolled (PECOS I20160726001917); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2010
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Laya Nasrollah in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A142119
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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30% fewer Medicare Part D claims than the average gastroenterology physician in 2024

567 Medicare Part D claims for 205 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.

  1. Laya Nasrollah567
  2. Specialty average811

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf93 claims
  2. Omeprazole82 claims
  3. Linzess52 claims
  4. Famotidine37 claims
  5. Pantoprazole Sodium34 claims
  6. Ondansetron Hcl28 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $253.76

8 payments; by number, the most common kind was food and beverage; the largest payer was Mindray DS USA, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Laya Nasrollah$253.76
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. Community Memorial Health SystemVentura, CA
  2. County OF VenturaVentura, CA
  3. Covington Menz Lyche And Lin Medical GPVentura, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Laya Nasrollah among 2,140 gastroenterology physician records in California

Laya Nasrollah is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 72% of them.

  • NPI issued2010 · 72% of these records are older, 26% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2010 · median 2002 among the 1,538 with a school on file
  • Record last updated2023 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Stephen Covington, MDVentura, CA 930031154353456
  2. Bruce Greenwald, M.D.Ventura, CA 930031619908829
  3. Sabine Hazan, MDVentura, CA 930031669418232
  4. Kip Lyche, MDVentura, CA 930031811927981
  5. Charles Menz, MDVentura, CA 930031447286141
  6. Benito PedrazaVentura, CA 930031851323026
  7. Dipti Sagar, MDVentura, CA 930031558642751
  8. Constante Abaya, MDOxnard, CA 930301003918459

Common questions

What is Laya Nasrollah's NPI number?

Laya Nasrollah's National Provider Identifier (NPI) is 1558673566, issued on Jul 7, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Laya Nasrollah located?

The NPPES record lists a practice address at 5800 Santa Rosa RD Ste 149, Camarillo, CA, 93012. Phone: (805) 469-8900. Providers update this record themselves, so call before visiting.

How can I verify Laya Nasrollah's license?

NPPES lists California license number A142119, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Laya Nasrollah prescribe under Medicare Part D?

In 2024, Laya Nasrollah had 567 Medicare Part D claims for 205 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.