NPPES file of Aug 9, 2026

Kleanthis G. Dendrinos, M.D.

Gastroenterology Physician · Bozeman, MT

Kleanthis G. Dendrinos, M.D. is a gastroenterology physician with a practice address in Bozeman, Montana, and NPI 1861528457, issued on Feb 26, 2007. Check the license (Montana MED-PHYS-LIC-58486, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861528457
Name
Kleanthis G. Dendrinos
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
MED-PHYS-LIC-58486 MT
220124 MA
7943A WY
Self-reported in NPPES; status is on the state search
Practice location
875 S Cottonwood RD Ste 200, Bozeman, MT 59718
Phone
(406) 414-5336
Enumerated
Feb 26, 2007
Record last updated
Apr 10, 2025
Fax
(406) 414-5337
Medicaid ID
1861528457 WY
Medicare enrollment
Enrolled (PECOS I20170915003174); accepts Medicare assignment
Medical or professional school
University Of Maryland School Of Medicine, 2001
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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Also registered at 875 S Cottonwood RD Ste 200

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

  1. Melissa Bowen, DNPFamily Nurse Practitioner1003581489
  2. Andrew Gentry, M.D.Gastroenterology Physician1922072560
  3. Andrew Herman, M.D.Gastroenterology Physician1003260217
  4. Christopher Lumsden, PA-CMedical Physician Assistant1912306184
  5. Kathryn Lynch, MDGastroenterology Physician1306829536
  6. Waring Trible, M.D.Gastroenterology Physician1043206238

Verify Kleanthis G. Dendrinos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical Examiners
    Search for license MED-PHYS-LIC-58486
    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 Montana 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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57% fewer Medicare Part D claims than the average gastroenterology physician in 2024

348 Medicare Part D claims for 102 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Kleanthis Dendrinos348
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium63 claims
  2. Omeprazole49 claims
  3. Esomeprazole Magnesium36 claims
  4. Budesonide Dr26 claims
  5. Balsalazide Disodium16 claims
  6. Budesonide Ec13 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): 80.8 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.

  1. Qualityout of 100 · 30% of the final score88.8
  2. Costout of 100 · 30%58.1
  3. Promoting interoperabilityout of 100 · 25%87.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $472.14

10 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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. Kleanthis Dendrinos$472.14
  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.

One hospital affiliation

  1. Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospitals4 of 5 stars

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.

Kleanthis G. Dendrinos among 44 gastroenterology physician records in Montana

Kleanthis G. Dendrinos, M.D. is one of 44 gastroenterology physician records with a practice address in Montana. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 77% of them.

  • NPI issued2007 · 77% of these records are older, 16% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2001 · median 1995 among the 30 with a school on file
  • Record last updated2025 · 41% 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 Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Montana

There are 44 gastroenterology physician records in Montana.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Andrew Gentry, M.D.Bozeman, MT 597181922072560
  2. Andrew Herman, M.D.Bozeman, MT 597181003260217
  3. Michael Lindner, M.D.Bozeman, MT 597181649274309
  4. Kathryn Lynch, MDBozeman, MT 597181306829536
  5. Nathaniel Spezia-Lindner, MDBozeman, MT 597181235691148
  6. Waring Trible, M.D.Bozeman, MT 597181043206238
  7. Peter Walsh, DOBozeman, MT 597181255372736
  8. Timothy Johnson, MDBozeman, MT 597151952495756

Common questions

What is Kleanthis G. Dendrinos, M.D.'s NPI number?

Kleanthis G. Dendrinos, M.D.'s National Provider Identifier (NPI) is 1861528457, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Kleanthis G. Dendrinos, M.D. located?

The NPPES record lists a practice address at 875 S Cottonwood RD Ste 200, Bozeman, MT, 59718. Phone: (406) 414-5336. Providers update this record themselves, so call before visiting.

How can I verify Kleanthis G. Dendrinos, M.D.'s license?

NPPES lists Montana license number MED-PHYS-LIC-58486, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kleanthis G. Dendrinos, M.D. prescribe under Medicare Part D?

In 2024, Kleanthis G. Dendrinos, M.D. had 348 Medicare Part D claims for 102 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Kleanthis G. Dendrinos, M.D.'s MIPS final score?

The 2023 MIPS final score is 80.8 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.