NPPES file of Aug 9, 2026

Dennis G. Larson, M.D.

Cardiovascular Disease Physician · Fort Collins, CO

Dennis G. Larson, M.D. is a cardiovascular disease physician with a practice address in Fort Collins, Colorado, and NPI 1891791950, issued on Jun 23, 2005. Check the license (Colorado 19667, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891791950
Name
Dennis G. Larson
Credential
M.D.
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License numbers
19667 CO
18976 NE
Self-reported in NPPES; status is on the state search
Practice location
2121 E Harmony RD, Fort Collins, CO 80528
Phone
(970) 221-1000
Enumerated
Jun 23, 2005
Record last updated
Jun 12, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(970) 297-6860
Medicaid IDs
109332100 WY
01196674 CO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest cardiovascular disease physician records → All 332 in Colorado → Look up another NPI →

Also registered at 2121 E Harmony RD

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

  1. Elvira Aguila, MDPulmonary Disease Physician1699727123
  2. Carrie Allen, PHARMDOncology Pharmacist1396279832
  3. Roger Ashmore, M.D.Interventional Cardiology Physician1184620635
  4. Wendy AustinCardiovascular Disease Physician1457517625
  5. Lindsay BennettFamily Nurse Practitioner1699146183
  6. Emily Berganini, PA-CMedical Physician Assistant1780093641

Verify Dennis G. Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 19667    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 Colorado 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Dennis G. Larson among 332 cardiovascular disease physician records in Colorado

Dennis G. Larson, M.D. is one of 332 cardiovascular disease physician records with a practice address in Colorado. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 82% newer
  • In a Medicare fileNo · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 67% of these records are
  • Record last updated2014 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cardiovascular Disease Physician providers in Colorado

There are 332 cardiovascular disease physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 332 in Colorado → Every provider in Fort Collins → Cardiovascular Disease Physician nationwide →

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Wendy AustinFort Collins, CO 805281457517625
  2. Satish Chacko, M.D.Fort Collins, CO 805281104147560
  3. Tristan Dow, M.D.Fort Collins, CO 805281063503597
  4. Michael Gitter, MDFort Collins, CO 805281467403410
  5. Charles Green, M.D.Fort Collins, CO 805281982600458
  6. Gary Luckasen, M.D.Fort Collins, CO 805281063418572
  7. William Miller, M.D.Fort Collins, CO 805281821094988
  8. Matthew Purvis, M.D.Fort Collins, CO 805281609931005

Common questions

What is Dennis G. Larson, M.D.'s NPI number?

Dennis G. Larson, M.D.'s National Provider Identifier (NPI) is 1891791950, issued on Jun 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Dennis G. Larson, M.D. located?

The NPPES record lists a practice address at 2121 E Harmony RD, Fort Collins, CO, 80528. Phone: (970) 221-1000. Providers update this record themselves, so call before visiting.

How can I verify Dennis G. Larson, M.D.'s license?

NPPES lists Colorado license number 19667, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.