NPPES file of Aug 9, 2026

Robert P. Perrillo, M.D.

Gastroenterology Physician · Dallas, TX

Robert P. Perrillo, M.D. is a gastroenterology physician with a practice address in Dallas, Texas, and NPI 1316962327, issued on Jul 12, 2006. Check the license (Texas M4440, as entered in NPPES) on the Texas Medical Board; 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
1316962327
Name
Robert P. Perrillo
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
M4440 TX
Self-reported in NPPES; status is on the state search
Practice location
3410 Worth Street, Dallas, TX 75246
Phone
(214) 820-8500
Enumerated
Jul 12, 2006
Record last updated
Mar 31, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(214) 820-8168
Medicaid IDs
185732801 TX
185732802 TX
185732803 TX
Medicare enrollment
Enrolled (PECOS I20070119000072); accepts Medicare assignment
Medical or professional school
Georgetown University School Of Medicine, 1970
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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Also registered at 3410 Worth Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Tuoc Dao, M.D.Surgical Oncology Physician1295938462
  2. Gary Davis, M.D.Hepatology Physician1265479364
  3. Megan Price, NP-CFamily Nurse Practitioner1679990352

Verify Robert P. Perrillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M4440    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 Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% fewer Medicare Part D claims than the average gastroenterology physician in 2024

68 Medicare Part D claims for 14 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.

  1. Robert Perrillo68
  2. Specialty average811

Most prescribed

  1. Entecavir21 claims
  2. Sirolimus14 claims
  3. Vemlidy13 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.

Bills Medicare through one group practice

  1. Healthtexas Provider NetworkDallas, TX

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

Gastroenterology Physician providers in Texas

There are 1,478 gastroenterology physician records in Texas.

All 1,478 in Texas → Every provider in Dallas →

Other gastroenterology physician records in Texas

  1. Ali AamarHouston, TX1922419209
  2. Amro Abdellatief, MDMcAllen, TX1932737020
  3. Wasif Abidi, M.D., PH.D.Houston, TX1821230780
  4. Olufemi Abiodun, MDArlington, TX1821199464
  5. Mohammed Aboelsoud, MDShenandoah, TX1316351430
  6. Bincy Abraham, MDHouston, TX1578767166
  7. Cherian Abraham, M.D.North Richland Hills, TX1134188311
  8. Sindhu Abraham, M.D.Plano, TX1033178223
  9. Daniela Abrams, MDGalveston, TX1801357793
  10. Rajeshwar Abrol, M.D.Tomball, TX1447258108

Common questions

What is Robert P. Perrillo, M.D.'s NPI number?

Robert P. Perrillo, M.D.'s National Provider Identifier (NPI) is 1316962327, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert P. Perrillo, M.D. located?

The NPPES record lists a practice address at 3410 Worth Street, Dallas, TX, 75246. Phone: (214) 820-8500. Providers update this record themselves, so call before visiting.

How can I verify Robert P. Perrillo, M.D.'s license?

NPPES lists Texas license number M4440, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Robert P. Perrillo, M.D. prescribe under Medicare Part D?

In 2024, Robert P. Perrillo, M.D. had 68 Medicare Part D claims for 14 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.