NPPES file of Aug 9, 2026

Xiang Liu, MD

Gastroenterology Physician · Middletown, CT

Xiang Liu, MD is a gastroenterology physician with a practice address in Middletown, Connecticut, and NPI 1881185718, issued on May 26, 2018. Check the license (Connecticut 73345, as entered in NPPES) on the Connecticut Medical Examining 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
1881185718
Name
Xiang Liu
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
73345 CT
Self-reported in NPPES; status is on the state search
Practice location
410 Saybrook RD Ste 201, Middletown, CT 06457
Phone
(860) 347-4620
Enumerated
May 26, 2018
Record last updated
Sep 2, 2024
Medicare enrollment
Enrolled (PECOS I20240812000214); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2018
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 410 Saybrook RD Ste 201

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

  1. Joshua Alderman, APRNNurse Practitioner1639622962
  2. Angelo Paredes, M.D.Gastroenterology Physician1235289398
  3. Perry Pratt, MDInternal Medicine Physician1952712721
  4. Lauren Prior, APRNNurse Practitioner1659051704

Verify Xiang Liu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 73345
    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 Connecticut 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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69% fewer Medicare Part D claims than the average gastroenterology physician in 2024

251 Medicare Part D claims for 112 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. Xiang Liu251
  2. Specialty average811

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf30 claims
  2. Pantoprazole Sodium29 claims
  3. Gavilyte-G28 claims
  4. Linzess26 claims
  5. Omeprazole25 claims
  6. Famotidine18 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: $706.72

25 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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. Xiang Liu$706.72
  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 one group practice

  1. Middlesex Gastroenterology Associates, LLCMiddletown, CT

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

Xiang Liu among 336 gastroenterology physician records in Connecticut

Xiang Liu, MD is one of 336 gastroenterology physician records with a practice address in Connecticut. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 92% of them.

  • NPI issued2018 · 92% of these records are older, 4% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2018 · median 2001 among the 255 with a school on file
  • Record last updated2024 · 69% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Connecticut

There are 336 gastroenterology physician records in Connecticut.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Edmund Chung, MDMiddletown, CT 064571306804323
  2. Lucian Gorgan, MDMiddletown, CT 064571619906542
  3. Nadeem Hussain, MDMiddletown, CT 064571548228596
  4. Gregor Koobatian, MDMiddletown, CT 064571609833730
  5. Ryan O'Connor, M.D.Middletown, CT 064571609052117
  6. Stanislaus Opalacz, MDMiddletown, CT 064571215995238
  7. Angelo Paredes, M.D.Middletown, CT 064571235289398
  8. Homaira Rasool, DOMiddletown, CT 064571043740293

Common questions

What is Xiang Liu, MD's NPI number?

Xiang Liu, MD's National Provider Identifier (NPI) is 1881185718, issued on May 26, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Xiang Liu, MD located?

The NPPES record lists a practice address at 410 Saybrook RD Ste 201, Middletown, CT, 06457. Phone: (860) 347-4620. Providers update this record themselves, so call before visiting.

How can I verify Xiang Liu, MD's license?

NPPES lists Connecticut license number 73345, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Xiang Liu, MD prescribe under Medicare Part D?

In 2024, Xiang Liu, MD had 251 Medicare Part D claims for 112 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.