Dr. Daniel Michael Marion, MD
- Medicare services, 2024
- 1,912
- Medicare patients, 2024
- 631
- Part D claims, 2024
- 22,650
- MIPS score, 2024
- 93
- Hospital affiliations
- 5
- Practice address
- 121 St Lukes Center Dr, Chesterfield, MO 63017
- Practice phone
- Call (314) 205-6160
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Conway Internists
Chesterfield, Missouri
Find Dr. Marion's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Daniel Michael Marion is an internist in Chesterfield, Missouri
Dr. Marion practices at Conway Internists in Chesterfield, Missouri.
Dr. Marion's NPI, 1275875908, was assigned on March 20, 2013. Dr. Marion graduated from Saint Louis University School of Medicine in 2014. Dr. Marion holds Missouri license 2016018222.
- NPI
- 1275875908NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729380548
- NPI enumeration date
- March 20, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 205-6160
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Michael Marion practices at Conway Internists in Chesterfield, Missouri
Dr. Marion's primary practice is Conway Internists, at 121 St Lukes Center Dr, Chesterfield, MO 63017 in Saint Louis County. The practice phone is (314) 205-6160.
- Conway Internists121 St Lukes Center Dr, Chesterfield, MO 63017 · Saint Louis CountyPhone(314) 205-6160
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daniel Michael Marion is affiliated with 10 sites of care and 1 medical group
Dr. Marion's primary practice is Conway Internists in Chesterfield, Missouri. Dr. Marion is also affiliated with St. Luke's Hospital. The medical group on file is St. Luke's Conway Internists. Dmand AI also links Dr. Marion to 4 more hospitals, 3 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Daniel Michael Marion's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marion practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Conway Internists | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Daniel Michael Marion is one of 2,114 internists in Missouri
Internal medicine is Dr. Marion's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marion is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Marion
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. Daniel Michael Marion billed Medicare for 1,912 services in 2024
CMS data shows 1,912 Medicare services from Dr. Marion across 10 procedure codes in 2024, for 631 Medicare patients. Medicare paid $151,748 for them. Every service was in an office.
Dr. Marion's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2492024: 1,3407%
- Other services
- 2023: 4712024: 25546%
- Tests and treatments
- 2023: 1892024: 24027%
- Lab and pathology
- 2023: 432024: 7779%
Dr. Marion compared with the Missouri median for internists, 2024
- Dr. Marion
- Missouri median
- Medicare services
- 1,912vs 5303.6 times
- Medicare patients
- 631vs 2113.0 times
- Part D claims
- 21,873vs 32567.3 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Marion'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.
Need commercial claims for Dr. Marion?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marion and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Michael Marion treated 631 Medicare patients in 2024, average age 77
CMS counts 631 Medicare patients who saw Dr. Marion in 2024. The largest group is 75 to 84, with 291 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marion's median patient age at 75, with 40% women.
Dr. Marion's Medicare patients by age, 2024
Dr. Marion's Medicare patients by sex, 2024
- Women29146%
- Men34054%
Chronic conditions among Dr. Marion's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease34%
- Chronic kidney disease28%
- Diabetes28%
- Atrial fibrillation21%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marion's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women40%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Michael Marion wrote 22,650 Medicare Part D claims in 2024
In 2024, Dr. Marion wrote 22,650 Medicare Part D claims for 1,249 patients. 89% of them were for generic drugs. CMS names the drug for 21,873 of them, across 189 drugs with 11 or more claims each, at $1,949,303 in total drug cost. In 2023, CMS named 19,667 claims across 183 drugs.
Dr. Marion's Part D claims by kind of drug, 2024
- Generic20,109 claims89%
- Brand-name2,507 claims11%
- Other34 claims0%
Dr. Marion'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. Marion's Part D claims, 2024
- Opioids3%600 of 22,650 claims
- Antibiotics3%658 of 22,650 claims
- Antipsychotics, patients 65 and over0%68 of 22,650 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: 19,6672024: 21,87311%
Drugs named by CMS: 189 in 2024, 183 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. Daniel Michael Marion scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Marion for performance year 2024, reported through an alternative payment model (APM). Dr. Marion accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Marion's MIPS scores, performance year 2024
- 93of 100Final score
- 82.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Daniel Michael Marion received $21,097 in industry payments from 2016 to 2025
CMS Open Payments shows 1,274 general payments to Dr. Marion from 56 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,260.
General payments to Dr. Marion by program year, 2016 to 2025
General payments to Dr. Marion by kind, 2016 to 2025
- Food and beverage$20,81199%
- Education$2861%
Companies that paid Dr. Marion 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. Daniel Michael Marion graduated from Saint Louis University School of Medicine
Dr. Marion graduated from Saint Louis University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Michael Marion'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Daniel Michael Marion
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. Daniel Michael Marion's NPI number?
Dr. Daniel Michael Marion's NPI number is 1275875908. It was assigned on March 20, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Michael Marion?
Dr. Daniel Michael Marion is an internist in Chesterfield, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel Michael Marion practice?
Dr. Marion practices at 121 St Lukes Center Dr, Chesterfield, MO 63017. Dr. Marion's primary practice is Conway Internists in Chesterfield, Missouri. Dmand AI also links Dr. Marion to 4 hospitals, 3 home health agencies and 1 group practice or clinic.
What is Dr. Daniel Michael Marion's office phone number?
The practice phone on file for Dr. Marion is (314) 205-6160.
What is Dr. Daniel Michael Marion's medical license number?
Dr. Marion holds Missouri license 2016018222.
Which hospitals is Dr. Daniel Michael Marion affiliated with?
Dr. Marion is affiliated with St. Luke's Hospital. Dmand AI links Dr. Marion to 4 more hospitals.
What medical group is Dr. Daniel Michael Marion part of?
Dr. Marion is linked to St. Luke's Conway Internists.
Does Dr. Daniel Michael Marion accept Medicare?
Yes. CMS data shows Dr. Marion billed Medicare for 1,912 services in 2024, and Dr. Marion accepts Medicare assignment.
What is Dr. Daniel Michael Marion's MIPS score?
Dr. Marion's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Daniel Michael Marion see?
CMS counts 631 Medicare patients who saw Dr. Marion in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Daniel Michael Marion bill to Medicare?
In 2024, Dr. Marion's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and vaccine or vaccine administration (90677).
Where did Dr. Daniel Michael Marion go to medical school?
Dr. Marion graduated from Saint Louis University School of Medicine in 2014.
What drugs does Dr. Daniel Michael Marion prescribe most?
In 2024 Medicare Part D data, Dr. Marion's most prescribed drugs by claims were Amlodipine Besylate, Rosuvastatin Calcium and Atorvastatin Calcium.
Has Dr. Daniel Michael Marion received payments from drug or device companies?
CMS Open Payments shows $21,097 in general payments to Dr. Marion from 56 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Daniel Michael Marion been practicing?
Dr. Marion graduated from medical school in 2014, 12 years ago.
Selling to internal medicine practices?
See internists in Missouri by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card