NPPES file of Aug 9, 2026

Mitchell D. Larson, CRNA

Certified Registered Nurse Anesthetist · Greeley, CO

Mitchell D. Larson, CRNA is a certified registered nurse anesthetist with a practice address in Greeley, Colorado, and NPI 1639147705, issued on Mar 14, 2006. Check the license (Colorado CRA-15015, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1639147705
Name
Mitchell D. Larson
Credential
CRNA
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License numbers
CRA-15015 CO
1378618 MN
Self-reported in NPPES; status is on the state search
Practice location
1801 16TH St, Greeley, CO 80631
Phone
(970) 352-4121
Enumerated
Mar 14, 2006
Record last updated
Jun 23, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicaid IDs
122019500 MN
16674847 CO
Medicare enrollment
Enrolled (PECOS I20091116000142); accepts Medicare assignment
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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8 nearest certified registered nurse anesthetist records → All 867 in Colorado → Look up another NPI →

Also registered at 1801 16TH St

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

  1. Costa AlimonosInternal Medicine Physician1235670712
  2. Rodger Anders, PA-CPhysician Assistant1710956917
  3. Renee Anderson, CRNACertified Registered Nurse Anesthetist1457339848
  4. Adrien Arling, PA-CSurgical Physician Assistant1255907382
  5. Sydney Aronson, MSPAS, PA-CSurgical Physician Assistant1376000653
  6. Ronald Baars, PHARMDPharmacist1649252867

Verify Mitchell D. Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license CRA-15015    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
Find 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.

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Bills Medicare through one group practice

  1. Rocky Mountain State Anesthesia ProvidersGreeley, CO

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

Mitchell D. Larson among 867 certified registered nurse anesthetist records in Colorado

Mitchell D. Larson, CRNA is one of 867 certified registered nurse anesthetist records with a practice address in Colorado. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 70% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1997 · median 2014 among the 646 with a school on file
  • Record last updated2010 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Certified Registered Nurse Anesthetist providers in Colorado

There are 867 certified registered nurse anesthetist records in Colorado.

All 867 in Colorado → Every provider in Greeley → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Renee Anderson, CRNAGreeley, CO 806311457339848
  2. Ryan Beck, CRNAGreeley, CO 806311699002741
  3. Juliet Erb, CRNAGreeley, CO 806311679703748
  4. Lee Freeman, CRNAGreeley, CO 806311851310742
  5. Mary Haskett, CRNAGreeley, CO 806311326089657
  6. Michael Hermsmeier, CRNAGreeley, CO 806311245538271
  7. John Howerter, CRNAGreeley, CO 806311114227873
  8. Brittany Sharp, CRNAGreeley, CO 806311710459417

Common questions

What is Mitchell D. Larson, CRNA's NPI number?

Mitchell D. Larson, CRNA's National Provider Identifier (NPI) is 1639147705, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mitchell D. Larson, CRNA located?

The NPPES record lists a practice address at 1801 16TH St, Greeley, CO, 80631. Phone: (970) 352-4121. Providers update this record themselves, so call before visiting.

How can I verify Mitchell D. Larson, CRNA's license?

NPPES lists Colorado license number CRA-15015, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity 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.

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.