NPPES file of Aug 9, 2026

Ryan D. Griesbach, MD

Diagnostic Radiology Physician · Fort Collins, CO

Ryan D. Griesbach, MD is a diagnostic radiology physician with a practice address in Fort Collins, Colorado, and NPI 1821445107, issued on May 17, 2016. Check the license (Colorado DR.0067900, as entered in NPPES) on the Colorado Medical Board; 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
1821445107
Name
Ryan D. Griesbach
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
DR.0067900 CO
34351 NE
69923-20 WI
14443A WY
Self-reported in NPPES; status is on the state search
Practice location
1024 S Lemay Ave, Fort Collins, CO 80524
Phone
(970) 484-4757
Enumerated
May 17, 2016
Record last updated
Jul 27, 2022
Fax
(970) 484-4759
Medicare enrollment
Enrolled (PECOS I20220602002036); accepts Medicare assignment
Medical or professional school
University Of Washington School Of Medicine, 2016
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 1024 S Lemay Ave

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

  1. Karen Alderfer, MDDiagnostic Radiology Physician1043534654
  2. Guy Alexander, MDDiagnostic Radiology Physician1083989362
  3. Michael ApostleEmergency Medicine Physician1952326407
  4. Carlos ArguellesEmergency Medicine Physician1417962960
  5. Everett AustinEmergency Medicine Physician1548503758
  6. Alvis Ayaba-Apawu, M.A., PHD. LPC.LAC.Professional Counselor1154553691

Verify Ryan D. Griesbach in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license DR.0067900
    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.

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Bills Medicare through 2 group practices

  1. Fort Collins Radiologic Associates PCFort Collins, CO
  2. Uchealth Imaging Services LLCDenver, CO

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

Ryan D. Griesbach among 796 diagnostic radiology physician records in Colorado

Ryan D. Griesbach, MD is one of 796 diagnostic radiology physician records with a practice address in Colorado. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 85% of them.

  • NPI issued2016 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2016 · median 2006 among the 562 with a school on file
  • Record last updated2022 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in Colorado

There are 796 diagnostic radiology physician records in Colorado.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Bruce Berkowitz, MDFort Collins, CO 805241467477109
  2. Timothy Duncan, MDFort Collins, CO 805241982674628
  3. Deborah Gunderson, MDFort Collins, CO 805241285659920
  4. Paul Johnson, M.D.Fort Collins, CO 805241720053036
  5. Bob Klingelheber, DOFort Collins, CO 805241528083276
  6. Lisa Langmo, M.D.Fort Collins, CO 805241508863549
  7. Andrea Lyons, M.D.Fort Collins, CO 805241417922188
  8. Joseph Mack, M.D.Fort Collins, CO 805241467439745

Common questions

What is Ryan D. Griesbach, MD's NPI number?

Ryan D. Griesbach, MD's National Provider Identifier (NPI) is 1821445107, issued on May 17, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Ryan D. Griesbach, MD located?

The NPPES record lists a practice address at 1024 S Lemay Ave, Fort Collins, CO, 80524. Phone: (970) 484-4757. Providers update this record themselves, so call before visiting.

How can I verify Ryan D. Griesbach, MD's license?

NPPES lists Colorado license number DR.0067900, 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. 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.