Liam Zakko, M.D.
Gastroenterology Physician · Lebanon, NH
Liam Zakko, M.D. is a gastroenterology physician with a practice address in Lebanon, New Hampshire, and NPI 1932499092, issued on Apr 11, 2011. Check the license (New Hampshire 18766, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Liam Zakko
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 18766 NH
Self-reported in NPPES; status is on the state search - Practice location
- One Medical Center Drive, Lebanon, NH 03756
- Phone
- (603) 650-5261
- Enumerated
- Apr 11, 2011
- Record last updated
- Jul 10, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid IDs
- 1032657 VT
3112140 NH - Medicare enrollment
- Enrolled (PECOS I20190718002114); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 110 in New Hampshire → Look up another NPI →
Also registered at One Medical Center Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexander Abess, MDAnesthesiology Physician1679677694
- Jeffrey Adler, M.D.Gastroenterology Physician1225327638
- Christopher Ahern, D.O.Hospice and Palliative Medicine (Internal Medicine) Physician1124405352
- Hilary Allison, APRNFamily Nurse Practitioner1598263774
- Madelynn Azar-Cavanagh, MD, MPH, CPE, FACOEMOccupational Medicine Physician1134266885
- Adrian Banning, PAPhysician Assistant1326142423
Verify Liam Zakko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 18766Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average gastroenterology physician in 2024
523 Medicare Part D claims for 236 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 12 claims were for opioids.
Most prescribed
- Pantoprazole Sodium109 claims
- Sod Sulf-Potass Sulf-Mag Sulf77 claims
- Esomeprazole Magnesium36 claims
- Peg 3350-Electrolyte32 claims
- Humira(Cf) Pen20 claims
- Linzess19 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,125.63
47 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. 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.
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
- Connecticut GI PLLCBristol, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Liam Zakko among 110 gastroenterology physician records in New Hampshire
Liam Zakko, M.D. is one of 110 gastroenterology physician records with a practice address in New Hampshire. 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 2011, is newer than 79% of them.
- NPI issued2011 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2011 · median 2002 among the 80 with a school on file
- Record last updated2018 · 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 New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New Hampshire
There are 110 gastroenterology physician records in New Hampshire.
All 110 in New Hampshire → Every provider in Lebanon → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Peter Anderson, M.D.Lebanon, NH 037561962425033
- Steve Bensen, M.D.Lebanon, NH 037561427071596
- Lynn Butterly, M.D.Lebanon, NH 037561982623070
- Timothy Gardner, MDLebanon, NH 037561851387229
- Stuart Gordon, M.D.Lebanon, NH 037561992711469
- Lee Kaplan, MD PHDLebanon, NH 037561255322475
- Brian Lacy, PH.D; M.DLebanon, NH 037561518980135
- Gary Levine, MDLebanon, NH 037561992728471
Common questions
What is Liam Zakko, M.D.'s NPI number?
Liam Zakko, M.D.'s National Provider Identifier (NPI) is 1932499092, issued on Apr 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Liam Zakko, M.D. located?
The NPPES record lists a practice address at One Medical Center Drive, Lebanon, NH, 03756. Phone: (603) 650-5261. Providers update this record themselves, so call before visiting.
How can I verify Liam Zakko, M.D.'s license?
NPPES lists New Hampshire license number 18766, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Liam Zakko, M.D. prescribe under Medicare Part D?
In 2024, Liam Zakko, M.D. had 523 Medicare Part D claims for 236 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Liam Zakko, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.