Marie Denise Alfonso Guanzon, MD
Internal Medicine Physician · St Cloud, MN
Marie Denise Alfonso Guanzon, MD is an internal medicine physician with a practice address in St Cloud, Minnesota, and NPI 1780664631, issued on Jan 18, 2006. Check the license (Minnesota 53336, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Marie Denise Alfonso Guanzon
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 53336 MN
9430 ND
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Sixth Ave N, St Cloud, MN 56303
- Phone
- (701) 530-7000
- Enumerated
- Jan 18, 2006
- Record last updated
- Apr 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (701) 530-8842
- Medicaid ID
- 13077 ND
- Medicare enrollment
- Enrolled (PECOS I20101110000133); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 1200 Sixth Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marie Denise Alfonso Guanzon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 53336Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,524 Medicare Part D claims for 617 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 86 claims were for opioids.
Most prescribed
- Atorvastatin Calcium806 claims
- Amlodipine Besylate492 claims
- Levothyroxine Sodium458 claims
- Lisinopril437 claims
- Omeprazole382 claims
- Losartan Potassium349 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.
Industry payments in 2024: $49.19
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through one group practice
- Centracare ClinicWillmar, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie Denise Alfonso Guanzon among 2,632 internal medicine physician records in Minnesota
Marie Denise Alfonso Guanzon, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1995 · median 2008 among the 1,700 with a school on file
- Record last updated2011 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in St Cloud
They are 12 of the 474 NPPES records with a practice address in St Cloud, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in St Cloud → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Barbara Bollinger, MDSaint Cloud, MN 563031174512081
- Tamara Congdon, MDSaint Cloud, MN 563031144219056
- Ronald Elg, MDSaint Cloud, MN 563031225029978
- Camelia Florea, MDSaint Cloud, MN 563031639169303
- David Furda, MDSaint Cloud, MN 563031902887946
- Dinesh Hindka, MBBSSaint Cloud, MN 563031518949486
- John Johnson, MDSaint Cloud, MN 563031760472336
- Wesley Lindquist, MDSt Cloud, MN 563031104816768
Common questions
What is Marie Denise Alfonso Guanzon, MD's NPI number?
Marie Denise Alfonso Guanzon, MD's National Provider Identifier (NPI) is 1780664631, issued on Jan 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marie Denise Alfonso Guanzon, MD located?
The NPPES record lists a practice address at 1200 Sixth Ave N, St Cloud, MN, 56303. Phone: (701) 530-7000. Providers update this record themselves, so call before visiting.
How can I verify Marie Denise Alfonso Guanzon, MD's license?
NPPES lists Minnesota license number 53336, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marie Denise Alfonso Guanzon, MD prescribe under Medicare Part D?
In 2024, Marie Denise Alfonso Guanzon, MD had 9,524 Medicare Part D claims for 617 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions 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.
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.