Mark D. Guadagnoli, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Loveland, CO
Mark D. Guadagnoli, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Loveland, Colorado, and NPI 1043208259, issued on Oct 11, 2005. Check the license (Colorado 29590, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark D. Guadagnoli
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 29590 CO
5495A WY
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Rocky Mountain Ave, Loveland, CO 80538
- Phone
- (970) 624-1800
- Enumerated
- Oct 11, 2005
- Record last updated
- Dec 7, 2022
- Fax
- (970) 624-1891
- Medicaid IDs
- 111738600 WY
01295906 CO
1043208259 NE - Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 87 in Colorado → Look up another NPI →
Also registered at 2500 Rocky Mountain Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eva Abram, CNM, NPAdvanced Practice Midwife1881232833
- Claire Aksamit, PA-CPhysician Assistant1871089235
- Grace Alessi, MDInternal Medicine Physician1457381964
- Sarah Ashmore, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1790274280
- Nathan Ayer, M.D., M.P.H.Internal Medicine Physician1457361172
- Jessica Bare, D.O.Obstetrics & Gynecology Physician1528357209
Verify Mark D. Guadagnoli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 29590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,619.24
11 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 4,047 providers of this specialty with any payment received $7,828.84 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.
Mark D. Guadagnoli among 87 thoracic surgery (cardiothoracic vascular surgery) physician records in Colorado
Mark D. Guadagnoli, M.D. is one of 87 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Colorado. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2022 · 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 208G00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Colorado
There are 87 thoracic surgery (cardiothoracic vascular surgery) physician records in Colorado.
All 87 in Colorado → Every provider in Loveland → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Matthew Bartley, M.D.Loveland, CO 805381700240645
- Milton Glatterer, MDLoveland, CO 805381013962372
- Jenifer Marks, MDLoveland, CO 805381538233754
- Catharine McDermott, M.D.Loveland, CO 805381114306578
- Kortney Robinson, M.D.Loveland, CO 805381154670933
- Dwight Slater, MDLoveland, CO 805381912227927
- Michael Stanton, MDLoveland, CO 805381871581090
- Reed Quinn, MDGreeley, CO 806311659382653
Common questions
What is Mark D. Guadagnoli, M.D.'s NPI number?
Mark D. Guadagnoli, M.D.'s National Provider Identifier (NPI) is 1043208259, issued on Oct 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Guadagnoli, M.D. located?
The NPPES record lists a practice address at 2500 Rocky Mountain Ave, Loveland, CO, 80538. Phone: (970) 624-1800. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Guadagnoli, M.D.'s license?
NPPES lists Colorado license number 29590, 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.