Dr. Michael G. Guignon Jr., MD
- Medicare services, 2024
- 1,201
- Medicare patients, 2024
- 301
- Part D claims, 2024
- 9,894
- Hospital affiliations
- 9
- Industry payments
- $3,283
- Practice address
- 3015 N Ballas Rd, Saint Louis, MO 63131
- Practice phone
- Call (314) 996-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Guignon's professional email, personal email and mobile number
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Dr. Michael G. Guignon Jr. is an internist in Saint Louis, Missouri
Dr. Guignon practices at Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health.
Dr. Guignon's NPI, 1942542931, was assigned on March 18, 2013. Dr. Guignon graduated from Southern Illinois University School of Medicine in 2013. Dr. Guignon holds Illinois license 036140835.
- NPI
- 1942542931NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779886791
- NPI enumeration date
- March 18, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 996-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael G. Guignon Jr. practices at Missouri Baptist Medical Center in Saint Louis, Missouri
Dr. Guignon's primary practice is Missouri Baptist Medical Center, at 3015 N Ballas Rd, Saint Louis, MO 63131 in St. Louis County. The practice phone is (314) 996-5000.
- Missouri Baptist Medical Center3015 N Ballas Rd, Saint Louis, MO 63131 · St. Louis CountyPhone(314) 996-5000
Source: Dmand AI Affiliation Data
Dr. Michael G. Guignon Jr. is affiliated with 14 sites of care and 3 medical groups
Dr. Guignon's primary practice is Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health. Dr. Guignon is also affiliated with Barnes-Jewish Hospital. The medical group on file is BJC Medical Group. Dmand AI also links Dr. Guignon to 7 more hospitals, 2 group practices and clinics, 2 home health agencies, 2 medical groups and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael G. Guignon Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guignon practices, 14 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Missouri Baptist Medical Center | Available with a free account |
| +13 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael G. Guignon Jr. is one of 2,114 internists in Missouri
Internal medicine is Dr. Guignon's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Guignon is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Guignon
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael G. Guignon Jr. billed Medicare for 1,201 services in 2024
CMS data shows 1,201 Medicare services from Dr. Guignon across 14 procedure codes in 2024, for 301 Medicare patients. Medicare paid $88,111 for them. Every service was in an office.
Dr. Guignon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 2682024: 556107%
- Office and hospital visits
- 2023: 4712024: 473No change
- Lab and pathology
- 2023: 662024: 10458%
- Tests and treatments
- 2023: 822024: 6817%
Dr. Guignon compared with the Missouri median for internists, 2024
- Dr. Guignon
- Missouri median
- Medicare services
- 1,201vs 5302.3 times
- Medicare patients
- 301vs 21143% above
- Part D claims
- 8,999vs 32527.7 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Guignon's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guignon and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael G. Guignon Jr. treated 301 Medicare patients in 2024, average age 74
CMS counts 301 Medicare patients who saw Dr. Guignon in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Guignon's median patient age at 71, with 55% women.
Dr. Guignon's Medicare patients by age, 2024
Dr. Guignon's Medicare patients by sex, 2024
- Women16254%
- Men13946%
Chronic conditions among Dr. Guignon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Arthritis51%
- Ischemic heart disease36%
- Diabetes29%
- Chronic kidney disease23%
- Anxiety21%
- Heart failure21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guignon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael G. Guignon Jr. wrote 9,894 Medicare Part D claims in 2024
In 2024, Dr. Guignon wrote 9,894 Medicare Part D claims for 638 patients. 86% of them were for generic drugs. CMS names the drug for 8,999 of them, across 157 drugs with 11 or more claims each, at $794,970 in total drug cost. In 2023, CMS named 6,654 claims across 128 drugs.
Dr. Guignon's Part D claims by kind of drug, 2024
- Generic8,508 claims86%
- Brand-name1,283 claims13%
- Other103 claims1%
Dr. Guignon's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Guignon's Part D claims, 2024
- Opioids4%357 of 9,894 claims
- Antibiotics2%200 of 9,894 claims
- Antipsychotics, patients 65 and over1%65 of 9,894 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,6542024: 8,99935%
Drugs named by CMS: 157 in 2024, 128 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Michael G. Guignon Jr. offers telehealth to Medicare patients
Dr. Guignon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Guignon as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael G. Guignon Jr. received $3,283 in industry payments from 2016 to 2025
CMS Open Payments shows 208 general payments to Dr. Guignon from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $716.
General payments to Dr. Guignon by program year, 2016 to 2025
Companies that paid Dr. Guignon the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael G. Guignon Jr. graduated from Southern Illinois University School of Medicine
Dr. Guignon graduated from Southern Illinois University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael G. Guignon Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael G. Guignon Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael G. Guignon Jr.'s NPI number?
Dr. Michael G. Guignon Jr.'s NPI number is 1942542931. It was assigned on March 18, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael G. Guignon Jr.?
Dr. Michael G. Guignon Jr. is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael G. Guignon Jr. practice?
Dr. Guignon practices at 3015 N Ballas Rd, Saint Louis, MO 63131. Dr. Guignon's primary practice is Missouri Baptist Medical Center in Saint Louis, Missouri, part of BJC Health. Dmand AI also links Dr. Guignon to 7 hospitals, 2 group practices and clinics, 2 home health agencies, 2 medical groups and 1 hospice.
What is Dr. Michael G. Guignon Jr.'s office phone number?
The practice phone on file for Dr. Guignon is (314) 996-5000.
What is Dr. Michael G. Guignon Jr.'s medical license number?
Dr. Guignon holds Illinois license 036140835.
Which hospitals is Dr. Michael G. Guignon Jr. affiliated with?
Dr. Guignon practices at Missouri Baptist Medical Center in Saint Louis, Missouri. Dr. Guignon is also affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Guignon to 7 more hospitals.
What medical group is Dr. Michael G. Guignon Jr. part of?
Dr. Guignon is linked to BJC Medical Group. Dmand AI links Dr. Guignon to 2 more medical groups.
Does Dr. Michael G. Guignon Jr. accept Medicare?
Yes. CMS data shows Dr. Guignon billed Medicare for 1,201 services in 2024, and Dr. Guignon accepts Medicare assignment.
Does Dr. Michael G. Guignon Jr. offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Guignon as offering telehealth services.
How many Medicare patients does Dr. Michael G. Guignon Jr. see?
CMS counts 301 Medicare patients who saw Dr. Guignon in 2024, with an average age of 74.
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What services does Dr. Michael G. Guignon Jr. bill to Medicare?
In 2024, Dr. Guignon's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
Where did Dr. Michael G. Guignon Jr. go to medical school?
Dr. Guignon graduated from Southern Illinois University School of Medicine in 2013.
What drugs does Dr. Michael G. Guignon Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Guignon's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.
Has Dr. Michael G. Guignon Jr. received payments from drug or device companies?
CMS Open Payments shows $3,283 in general payments to Dr. Guignon from 22 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Michael G. Guignon Jr. been practicing?
Dr. Guignon graduated from medical school in 2013, 13 years ago.
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