Gregory Dadekian, MD
Internal Medicine Physician · Lebanon, NH
Gregory Dadekian, MD is an internal medicine physician with a practice address in Lebanon, New Hampshire, and NPI 1902082449, issued on Jan 15, 2008. Check the license (New Hampshire 16065, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory Dadekian
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 16065 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1 Medical Center Dr, Lebanon, NH 03756
- Phone
- (603) 650-5861
- Enumerated
- Jan 15, 2008
- Record last updated
- Dec 10, 2025
- Fax
- (603) 640-1228
- Medicare enrollment
- Enrolled (PECOS I20160705000497); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 673 in New Hampshire → Look up another NPI →
Also registered at 1 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Abbate, NPFamily Nurse Practitioner1669683637
- McCall Abbott, APRNFamily Nurse Practitioner1396292454
- Lauren AbbuhlStudent in an Organized Health Care Education/Training Program1760322986
- William Abdu, M.D.Orthopaedic Surgery of the Spine Physician1134162324
- Iryna Aberkorn, MDFamily Medicine Physician1780846071
- Majd Aboul Hosn, MDStudent in an Organized Health Care Education/Training Program1932901949
Verify Gregory Dadekian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 16065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,178 Medicare Part D claims for 279 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Metoprolol Succinate333 claims
- Atorvastatin Calcium247 claims
- Eliquis240 claims
- Amlodipine Besylate164 claims
- Lisinopril135 claims
- Losartan Potassium130 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): 90.1 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: $184.08
2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
2 hospitals and group practices
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospitals3 of 5 stars
- Dartmouth-Hitchcock ClinicLebanon, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Gregory Dadekian among 673 internal medicine physician records in New Hampshire
Gregory Dadekian, MD is one of 673 internal medicine physician records with a practice address in New Hampshire. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 39% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2005 among the 443 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
167 internal medicine physician records list a practice address in Lebanon
They are 167 of the 3,530 NPPES records with a practice address in Lebanon, and 673 internal medicine physician records in New Hampshire.
All 673 in New Hampshire → Every provider in Lebanon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Frances Brokaw, MD, MSLebanon, NH 037561447291604
- Theresa Caputo, MDLebanon, NH 037561740259886
- Linda Dacey, M.D.Lebanon, NH 037561760428007
- Margaret Doucette, NPLebanon, NH 037561669419172
- Harley Friedman, M.D.Lebanon, NH 037561619922010
- Rowland Hazard, M.D.Lebanon, NH 037561508801143
- Kelly Kieffer, MDLebanon, NH 037561740224443
- Stephen Liu, M.D.Lebanon, NH 037561578507141
Common questions
What is Gregory Dadekian, MD's NPI number?
Gregory Dadekian, MD's National Provider Identifier (NPI) is 1902082449, issued on Jan 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Dadekian, MD located?
The NPPES record lists a practice address at 1 Medical Center Dr, Lebanon, NH, 03756. Phone: (603) 650-5861. Providers update this record themselves, so call before visiting.
How can I verify Gregory Dadekian, MD's license?
NPPES lists New Hampshire license number 16065, 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 Gregory Dadekian, MD prescribe under Medicare Part D?
In 2024, Gregory Dadekian, MD had 2,178 Medicare Part D claims for 279 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gregory Dadekian, MD's MIPS final score?
The 2023 MIPS final score is 90.1 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.