Dr. Nathan C. Robertson, MD
- Medicare services, 2024
- 261
- Medicare patients, 2024
- 104
- Part D claims, 2024
- 21
- Hospital affiliations
- 1
- Medical groups
- 6
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Nathan C. Robertson is an internist in Saint Louis, Missouri
Dr. Robertson practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Robertson's NPI, 1124439252, was assigned on May 12, 2014. Dr. Robertson graduated from Saint Louis University School of Medicine in 2014. Dr. Robertson holds Missouri license 2017013105.
- NPI
- 1124439252NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769784222
- NPI enumeration date
- May 12, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 251-6000
- 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. Nathan C. Robertson practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Robertson's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. Nathan C. Robertson is affiliated with 6 sites of care and 6 medical groups
Dr. Robertson's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. The medical group on file is Mercy Hospital St. Louis. Dmand AI also links Dr. Robertson to 5 more group practices and clinics and 5 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. Nathan C. Robertson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Robertson practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +5 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nathan C. Robertson is one of 2,114 internists in Missouri
Internal medicine is Dr. Robertson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Robertson is board certified in internal medicine by the American Board of Internal Medicine. Dr. Robertson is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Robertson
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. Nathan C. Robertson billed Medicare for 261 services in 2024
CMS data shows 261 Medicare services from Dr. Robertson across 3 procedure codes in 2024, for 104 Medicare patients. Medicare paid $17,553 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Robertson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2762024: 2615%
Dr. Robertson compared with the Missouri median for internists, 2024
- Dr. Robertson
- Missouri median
- Medicare services
- 261vs 53051% below
- Medicare patients
- 104vs 21151% below
- Part D claims
- 22vs 32593% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Robertson'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. Robertson and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan C. Robertson treated 104 Medicare patients in 2024, average age 76
CMS counts 104 Medicare patients who saw Dr. Robertson in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 2.55, 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. Robertson's median patient age at 74, with 61% women.
Dr. Robertson's Medicare patients by age, 2024
Dr. Robertson's Medicare patients by sex, 2024
- Women5957%
- Men4543%
Chronic conditions among Dr. Robertson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis69%
- Chronic kidney disease66%
- Diabetes51%
- Heart failure51%
- Mood disorders48%
- Anxiety47%
Share of Medicare patients with each condition. A patient can have several.
Dr. Robertson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan C. Robertson wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Robertson wrote 21 Medicare Part D claims for 13 patients. 76% of them were for generic drugs. They cover 2 drugs, with $3,769 in total drug cost.
Dr. Robertson's Part D claims by kind of drug, 2024
- Generic16 claims76%
- Brand-name and other5 claims24%
Dr. Robertson's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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
How Dr. Nathan C. Robertson takes part in Medicare
Dr. Robertson 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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Dr. Nathan C. Robertson graduated from Saint Louis University School of Medicine
Dr. Robertson graduated from Saint Louis University School of Medicine in 2014.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan C. Robertson'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) |
| 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. Nathan C. Robertson
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. Nathan C. Robertson's NPI number?
Dr. Nathan C. Robertson's NPI number is 1124439252. It was assigned on May 12, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan C. Robertson?
Dr. Nathan C. Robertson is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nathan C. Robertson practice?
Dr. Robertson practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Robertson's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Robertson to 5 group practices and clinics and 5 medical groups.
What is Dr. Nathan C. Robertson's office phone number?
The practice phone on file for Dr. Robertson is (314) 251-6000.
What is Dr. Nathan C. Robertson's medical license number?
Dr. Robertson holds Missouri license 2017013105.
Which hospitals is Dr. Nathan C. Robertson affiliated with?
Dr. Robertson practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Dr. Nathan C. Robertson part of?
Dr. Robertson is linked to Mercy Hospital St. Louis. Dmand AI links Dr. Robertson to 5 more medical groups.
Does Dr. Nathan C. Robertson accept Medicare?
Yes. CMS data shows Dr. Robertson billed Medicare for 261 services in 2024, and Dr. Robertson accepts Medicare assignment.
How many Medicare patients does Dr. Nathan C. Robertson see?
CMS counts 104 Medicare patients who saw Dr. Robertson in 2024, with an average age of 76.
Is Dr. Nathan C. Robertson board certified?
Yes. Dr. Robertson is board certified in internal medicine by the American Board of Internal Medicine.
Show 4 more questionsShow fewer questions
What services does Dr. Nathan C. Robertson bill to Medicare?
In 2024, Dr. Robertson's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Nathan C. Robertson go to medical school?
Dr. Robertson graduated from Saint Louis University School of Medicine in 2014.
What drugs does Dr. Nathan C. Robertson prescribe most?
In 2017 Medicare Part D data, Dr. Robertson's most prescribed drugs by claims were Brilinta and Clopidogrel.
How long has Dr. Nathan C. Robertson been practicing?
Dr. Robertson graduated from medical school in 2014, 12 years ago.
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