Dr. David Michael Hayes, MD
- Medicare services, 2024
- 262
- Medicare patients, 2024
- 121
- Part D claims, 2024
- 105
- MIPS score, 2024
- 85
- Hospital affiliations
- 2
- 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 Dr. Hayes' professional email, personal email and mobile number
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Dr. David Michael Hayes is an internist in Saint Louis, Missouri
Dr. Hayes practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care.
Dr. Hayes' NPI, 1396130852, was assigned on April 1, 2015. Dr. Hayes holds Missouri license 2018010485.
- NPI
- 1396130852NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547562977
- NPI enumeration date
- April 1, 2015
- 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
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Michael Hayes practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri
Dr. Hayes' 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
Dr. David Michael Hayes is affiliated with 2 sites of care and 3 medical groups
Dr. Hayes' primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care. Dr. Hayes is also affiliated with SSM Health Saint Louis University Hospital. The medical group on file is SLUCare Physician Group. Dmand AI also links Dr. Hayes to 2 more medical groups, 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. David Michael Hayes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hayes practices, 2 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 |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Michael Hayes is one of 2,114 internists in Missouri
Internal medicine is Dr. Hayes' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hayes is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Hayes
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. David Michael Hayes billed Medicare for 262 services in 2024
CMS data shows 262 Medicare services from Dr. Hayes across 5 procedure codes in 2024, for 121 Medicare patients. Medicare paid $19,356 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hayes' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4742024: 26245%
Dr. Hayes compared with the Missouri median for internists, 2024
- Dr. Hayes
- Missouri median
- Medicare services
- 262vs 53051% below
- Medicare patients
- 121vs 21143% below
- Part D claims
- 67vs 32579% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Hayes' 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. Hayes and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Michael Hayes treated 121 Medicare patients in 2024, average age 73
CMS counts 121 Medicare patients who saw Dr. Hayes in 2024. The largest group is 75 to 84, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 45% are also on Medicaid. Their average risk score is 3.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hayes' median patient age at 69, with 52% women.
Dr. Hayes' Medicare patients by age, 2024
Dr. Hayes' Medicare patients by sex, 2024
- Women6352%
- Men5848%
Chronic conditions among Dr. Hayes' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease54%
- Chronic kidney disease52%
- Diabetes52%
- Mood disorders50%
- Arthritis49%
- Anxiety48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hayes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Michael Hayes wrote 105 Medicare Part D claims in 2024
In 2024, Dr. Hayes wrote 105 Medicare Part D claims for 41 patients. 76% of them were for generic drugs. CMS names the drug for 67 of them, across 4 drugs with 11 or more claims each, at $13,250 in total drug cost. In 2022, CMS named 109 claims across 6 drugs.
Dr. Hayes' Part D claims by kind of drug, 2024
- Generic80 claims76%
- Brand-name and other25 claims24%
Dr. Hayes' most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1092023: 6739%
Drugs named by CMS: 4 in 2023, 6 in 2022.
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. David Michael Hayes scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Hayes for performance year 2024, reported as part of a group. Dr. Hayes accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Hayes' MIPS scores, performance year 2024
- 85of 100Final score
- 68.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. David Michael Hayes received $411 in industry payments from 2019 to 2024
CMS Open Payments shows 4 general payments to Dr. Hayes from 3 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $268.
General payments to Dr. Hayes by program year, 2019 to 2024
Companies that paid Dr. Hayes the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David Michael Hayes'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)Clinician Public Reporting: Overall MIPS Performance (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 Dr. David Michael Hayes
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. David Michael Hayes' NPI number?
Dr. David Michael Hayes' NPI number is 1396130852. It was assigned on April 1, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. David Michael Hayes?
Dr. David Michael Hayes is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Michael Hayes practice?
Dr. Hayes practices at 6420 Clayton Rd, Saint Louis, MO 63117. Dr. Hayes' primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care. Dmand AI also links Dr. Hayes to 2 medical groups.
What is Dr. David Michael Hayes' office phone number?
The practice phone on file for Dr. Hayes is (314) 768-8000.
What is Dr. David Michael Hayes' medical license number?
Dr. Hayes holds Missouri license 2018010485.
Which hospitals is Dr. David Michael Hayes affiliated with?
Dr. Hayes practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri. Dr. Hayes is also affiliated with SSM Health Saint Louis University Hospital.
What medical group is Dr. David Michael Hayes part of?
Dr. Hayes is linked to SLUCare Physician Group. Dmand AI links Dr. Hayes to 2 more medical groups.
Does Dr. David Michael Hayes accept Medicare?
Yes. CMS data shows Dr. Hayes billed Medicare for 262 services in 2024, and Dr. Hayes accepts Medicare assignment.
What is Dr. David Michael Hayes' MIPS score?
Dr. Hayes' MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. David Michael Hayes see?
CMS counts 121 Medicare patients who saw Dr. Hayes in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. David Michael Hayes bill to Medicare?
In 2024, Dr. Hayes' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99238).
What drugs does Dr. David Michael Hayes prescribe most?
In 2023 Medicare Part D data, Dr. Hayes' most prescribed drugs by claims were Eliquis, Furosemide and Carvedilol.
Has Dr. David Michael Hayes received payments from drug or device companies?
CMS Open Payments shows $411 in general payments to Dr. Hayes from 3 companies from 2019 to 2024. The largest total came from Inari Medical, Inc.
How long has Dr. David Michael Hayes been practicing?
Dr. Hayes graduated from medical school in 2015, 11 years ago.
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