Michael Oliver Hessel, PA-C
- Part D claims, 2024
- 1,924
- Hospital affiliations
- 3
- Industry payments
- $1,405
- Medical group
- 1
- State license
- 1
- Practice address
- 6420 Clayton Rd, Saint Louis, MO 63117
- Practice phone
- Call (314) 768-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Michael Hessel's professional email, personal email and mobile number
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Michael Oliver Hessel is a physician assistant in Saint Louis, Missouri
Michael Hessel practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care.
Michael Hessel's NPI, 1902312259, was assigned on December 22, 2017.
- NPI
- 1902312259NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587910674
- NPI enumeration date
- December 22, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 768-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael Oliver Hessel practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri
Michael Hessel's primary practice is SSM Health St. Mary's Hospital - St. Louis, at 6420 Clayton Rd, Saint Louis, MO 63117 in St. Louis County. The practice phone is (314) 768-8000.
- SSM Health St. Mary's Hospital - St. Louis6420 Clayton Rd, Saint Louis, MO 63117 · St. Louis CountyPhone(314) 768-8000
Source: Dmand AI Affiliation Data
Michael Oliver Hessel is affiliated with 4 sites of care and 1 medical group
Michael Hessel's primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care. Michael Hessel is also affiliated with Mercy Hospital St. Louis. The medical group on file is Saint Louis Rheumatology. Dmand AI also links Michael Hessel to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Michael Oliver Hessel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Hessel practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - St. Louis | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael Oliver Hessel is one of 1,484 physician assistants in Missouri
Physician assistant is Michael Hessel's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Michael Hessel
Counts of physician assistants 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
Michael Oliver Hessel's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Michael Hessel's median patient age at 65, with 67% women.
Michael Hessel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Michael Oliver Hessel wrote 1,924 Medicare Part D claims in 2024
In 2024, Michael Hessel wrote 1,924 Medicare Part D claims for 245 patients. 87% of them were for generic drugs.
Michael Hessel's Part D claims by kind of drug, 2024
- Generic1,679 claims87%
- Brand-name and other245 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Michael Oliver Hessel takes part in Medicare
Michael Hessel accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Michael Oliver Hessel received $1,405 in industry payments in 2025
CMS Open Payments shows 78 general payments to Michael Hessel from 17 drug and device companies in 2025. Food and beverage make up the largest share, 95% of the total. Janssen Pharmaceuticals, Inc paid the most, $231.
General payments to Michael Hessel by kind, 2025 to 2025
- Food and beverage$1,33695%
- Education$695%
Companies that paid Michael Hessel the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Michael Oliver Hessel'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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) |
| 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 Michael Oliver Hessel
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael Oliver Hessel's NPI number?
Michael Oliver Hessel's NPI number is 1902312259. It was assigned on December 22, 2017, and it is active in the NPI Registry.
What does Michael Oliver Hessel specialize in?
Michael Oliver Hessel is a physician assistant in Saint Louis, Missouri. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Michael Oliver Hessel practice?
Michael Hessel practices at 6420 Clayton Rd, Saint Louis, MO 63117. Michael Hessel's primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care. Dmand AI also links Michael Hessel to 1 hospital and 1 group practice or clinic.
What is Michael Oliver Hessel's office phone number?
The practice phone on file for Michael Hessel is (314) 768-8000.
Which hospitals is Michael Oliver Hessel affiliated with?
Michael Hessel practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri. Michael Hessel is also affiliated with Mercy Hospital St. Louis. Dmand AI links Michael Hessel to 1 more hospital.
What medical group is Michael Oliver Hessel part of?
Michael Hessel is linked to Saint Louis Rheumatology.
Does Michael Oliver Hessel accept Medicare?
Yes. CMS lists Michael Hessel as accepting Medicare assignment.
Has Michael Oliver Hessel received payments from drug or device companies?
CMS Open Payments shows $1,405 in general payments to Michael Hessel from 17 companies from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Michael Oliver Hessel been practicing?
Michael Hessel graduated from medical school in 2018, 8 years ago.
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