Dr. Daniel Ryder Ludwig, MD
- Medicare services, 2024
- 1,802
- Medicare patients, 2024
- 1,415
- MIPS score, 2024
- 84
- Hospital affiliations
- 5
- Industry payments
- $12,532
- Practice address
- One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110
- Practice phone
- Call (314) 747-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ludwig's professional email, personal email and mobile number
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Dr. Daniel Ryder Ludwig is a diagnostic radiologist in Saint Louis, Missouri
Dr. Ludwig practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.
Dr. Ludwig's NPI, 1780002543, was assigned on March 30, 2014. Dr. Ludwig graduated from University of Pittsburgh School of Medicine in 2014. Dr. Ludwig holds Missouri license 2018001293.
- NPI
- 1780002543NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880811298
- NPI enumeration date
- March 30, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 747-3000
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel Ryder Ludwig practices at 2 locations in Saint Louis, Missouri
Dr. Ludwig's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Ludwig also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.
- Barnes-Jewish HospitalPrimaryOne Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 · St. Louis CityPhone(314) 747-3000
- Barnes-Jewish Hospital1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110 · Saint Louis CityPhone(314) 747-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Daniel Ryder Ludwig is affiliated with 7 sites of care and 2 medical groups
Dr. Ludwig's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. Ludwig is also affiliated with Missouri Baptist Medical Center. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Ludwig to 3 more hospitals, 2 group practices and clinics and 1 medical group, 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. Daniel Ryder Ludwig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ludwig practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barnes-Jewish Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel Ryder Ludwig is one of 679 diagnostic radiologists in Missouri
Diagnostic radiology is Dr. Ludwig's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Ludwig is licensed in Missouri.
Specialties and state licenses
- Diagnostic radiology, MissouriPrimary
Diagnostic radiologists near Dr. Ludwig
Counts of diagnostic radiologists 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 Ryder Ludwig billed Medicare for 1,802 services in 2024
CMS data shows 1,802 Medicare services from Dr. Ludwig across 30 procedure codes in 2024, for 1,415 Medicare patients. Medicare paid $71,983 for them.
Dr. Ludwig's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,8652024: 1,7178%
- Tests and treatments
- 2023: 362024: 5450%
- Surgery
- 2023: 112024: 31182%
Where Dr. Ludwig's Medicare services took place, 2024
- In an office1589%
- In a facility1,64491%
Dr. Ludwig compared with the Missouri median for diagnostic radiologists, 2024
- Dr. Ludwig
- Missouri median
- Medicare services
- 1,802vs 2,41525% below
- Medicare patients
- 1,415vs 1,76020% below
Medians across 648 diagnostic radiologists in Missouri with Dmand AI profiles that report each measure.
Dr. Ludwig'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. Ludwig and other diagnostic radiologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel Ryder Ludwig treated 1,415 Medicare patients in 2024, average age 71
CMS counts 1,415 Medicare patients who saw Dr. Ludwig in 2024. The largest group is 65 to 74, with 630 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.38, 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. Ludwig's median patient age at 69, with 50% women.
Dr. Ludwig's Medicare patients by age, 2024
Dr. Ludwig's Medicare patients by sex, 2024
- Women65146%
- Men76454%
Chronic conditions among Dr. Ludwig's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis52%
- Chronic kidney disease41%
- Diabetes40%
- Ischemic heart disease40%
- Anxiety35%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ludwig's 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
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel Ryder Ludwig scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Ludwig for performance year 2024, reported as part of a group. Dr. Ludwig accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ludwig's MIPS scores, performance year 2024
- 84of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 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. Daniel Ryder Ludwig received $12,532 in industry payments from 2024 to 2025
CMS Open Payments shows 13 general payments to Dr. Ludwig from 3 drug and device companies from 2024 to 2025. Consulting fees make up the largest share, 75% of the total. Guerbet LLC paid the most, $7,142.
General payments to Dr. Ludwig by program year, 2024 to 2025
General payments to Dr. Ludwig by kind, 2024 to 2025
- Consulting fees$9,36375%
- Travel and lodging$2,38819%
- Food and beverage$7826%
Companies that paid Dr. Ludwig the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel Ryder Ludwig graduated from University of Pittsburgh School of Medicine
Dr. Ludwig graduated from University of Pittsburgh School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel Ryder Ludwig'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 Affiliation DataDmand AI Practice 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) |
| 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 Ryder Ludwig
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 Ryder Ludwig's NPI number?
Dr. Daniel Ryder Ludwig's NPI number is 1780002543. It was assigned on March 30, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel Ryder Ludwig?
Dr. Daniel Ryder Ludwig is a diagnostic radiologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Daniel Ryder Ludwig practice?
Dr. Ludwig practices at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110. Dr. Ludwig also practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. Dr. Ludwig's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dmand AI also links Dr. Ludwig to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Daniel Ryder Ludwig's office phone number?
The practice phone on file for Dr. Ludwig is (314) 747-3000.
What is Dr. Daniel Ryder Ludwig's medical license number?
Dr. Ludwig holds Missouri license 2018001293.
Which hospitals is Dr. Daniel Ryder Ludwig affiliated with?
Dr. Ludwig practices at Barnes-Jewish Hospital in Saint Louis, Missouri. Dr. Ludwig is also affiliated with Missouri Baptist Medical Center. Dmand AI links Dr. Ludwig to 3 more hospitals.
What medical group is Dr. Daniel Ryder Ludwig part of?
Dr. Ludwig is linked to WashU Medicine Psychiatry. Dmand AI links Dr. Ludwig to 1 more medical group.
Does Dr. Daniel Ryder Ludwig accept Medicare?
Yes. CMS data shows Dr. Ludwig billed Medicare for 1,802 services in 2024, and Dr. Ludwig accepts Medicare assignment.
What is Dr. Daniel Ryder Ludwig's MIPS score?
Dr. Ludwig's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Daniel Ryder Ludwig see?
CMS counts 1,415 Medicare patients who saw Dr. Ludwig in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Daniel Ryder Ludwig bill to Medicare?
In 2024, Dr. Ludwig's most billed Medicare services were diagnostic imaging (74018), diagnostic imaging (74177) and diagnostic imaging (71260).
Where did Dr. Daniel Ryder Ludwig go to medical school?
Dr. Ludwig graduated from University of Pittsburgh School of Medicine in 2014.
Has Dr. Daniel Ryder Ludwig received payments from drug or device companies?
CMS Open Payments shows $12,532 in general payments to Dr. Ludwig from 3 companies from 2024 to 2025. The largest total came from Guerbet LLC.
How long has Dr. Daniel Ryder Ludwig been practicing?
Dr. Ludwig graduated from medical school in 2014, 12 years ago.
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