Dr. Robert Nathan Long, MD
- Medicare services, 2024
- 589
- Medicare patients, 2024
- 238
- Part D claims, 2024
- 165
- Hospital affiliations
- 1
- Industry payments
- $285
- 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
Find Dr. Long'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. Robert Nathan Long is an internist in Saint Louis, Missouri
Dr. Long practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Long's NPI, 1639300262, was assigned on July 30, 2009. Dr. Long graduated from Indiana University School of Medicine in 2012. Dr. Long holds Missouri license 2012017791.
- NPI
- 1639300262NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810140662
- NPI enumeration date
- July 30, 2009
- 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
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Nathan Long practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Long'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. Robert Nathan Long is affiliated with 3 sites of care and 2 medical groups
Dr. Long'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. Long to 2 more 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. Robert Nathan Long's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Long practices, 3 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 |
| +2 more sites and 1 medical group | 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 Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert Nathan Long is one of 2,114 internists in Missouri
Internal medicine is Dr. Long's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Long is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Long
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. Robert Nathan Long billed Medicare for 589 services in 2024
CMS data shows 589 Medicare services from Dr. Long across 5 procedure codes in 2024, for 238 Medicare patients. Medicare paid $43,271 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Long's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6232024: 5777%
- Surgery
- 2023: 02024: 12
Dr. Long compared with the Missouri median for internists, 2024
- Dr. Long
- Missouri median
- Medicare services
- 589vs 53011% above
- Medicare patients
- 238vs 21113% above
- Part D claims
- 16vs 32595% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Long'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. Long?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Long and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Nathan Long treated 238 Medicare patients in 2024, average age 76
CMS counts 238 Medicare patients who saw Dr. Long in 2024. The largest group is 75 to 84, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.75, 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. Long's median patient age at 74, with 56% women.
Dr. Long's Medicare patients by age, 2024
Dr. Long's Medicare patients by sex, 2024
- Women12553%
- Men11347%
Chronic conditions among Dr. Long's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Chronic kidney disease64%
- Ischemic heart disease57%
- Mood disorders55%
- Depression52%
- Heart failure52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Long'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
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert Nathan Long wrote 165 Medicare Part D claims in 2024
In 2024, Dr. Long wrote 165 Medicare Part D claims for 81 patients. 79% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $8,764 in total drug cost. In 2020, CMS named 11 claims across 1 drug.
Dr. Long's Part D claims by kind of drug, 2024
- Generic130 claims79%
- Brand-name35 claims21%
Dr. Long'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. Long's Part D claims, 2024
- Opioids8%13 of 165 claims
- Antibiotics16%26 of 165 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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 112024: 1645%
Drugs named by CMS: 1 in 2024, 1 in 2020.
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. Robert Nathan Long takes part in Medicare
Dr. Long accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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. Robert Nathan Long received $285 in industry payments from 2016 to 2023
CMS Open Payments shows 17 general payments to Dr. Long from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 94% of the total. The Medicines Company paid the most, $114.
General payments to Dr. Long by program year, 2016 to 2023
General payments to Dr. Long by kind, 2016 to 2023
- Food and beverage$26794%
- Education$196%
Companies that paid Dr. Long the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Nathan Long graduated from Indiana University School of Medicine
Dr. Long graduated from Indiana University School of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Nathan Long'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)Doctors and Clinicians Utilization Data (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. Robert Nathan Long
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. Robert Nathan Long's NPI number?
Dr. Robert Nathan Long's NPI number is 1639300262. It was assigned on July 30, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Nathan Long?
Dr. Robert Nathan Long is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert Nathan Long practice?
Dr. Long practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Long's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Long to 2 group practices and clinics and 1 medical group.
What is Dr. Robert Nathan Long's office phone number?
The practice phone on file for Dr. Long is (314) 251-6000.
What is Dr. Robert Nathan Long's medical license number?
Dr. Long holds Missouri license 2012017791.
Which hospitals is Dr. Robert Nathan Long affiliated with?
Dr. Long practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Dr. Robert Nathan Long part of?
Dr. Long is linked to Mercy Hospital St. Louis. Dmand AI links Dr. Long to 1 more medical group.
Does Dr. Robert Nathan Long accept Medicare?
Yes. CMS data shows Dr. Long billed Medicare for 589 services in 2024, and Dr. Long accepts Medicare assignment.
How many Medicare patients does Dr. Robert Nathan Long see?
CMS counts 238 Medicare patients who saw Dr. Long in 2024, with an average age of 76.
What services does Dr. Robert Nathan Long bill to Medicare?
In 2024, Dr. Long's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
Show 4 more questionsShow fewer questions
Where did Dr. Robert Nathan Long go to medical school?
Dr. Long graduated from Indiana University School of Medicine in 2012.
What drugs does Dr. Robert Nathan Long prescribe most?
In 2024 Medicare Part D data, Dr. Long's most prescribed drugs by claims were Eliquis.
Has Dr. Robert Nathan Long received payments from drug or device companies?
CMS Open Payments shows $285 in general payments to Dr. Long from 7 companies from 2016 to 2023. The largest total came from The Medicines Company.
How long has Dr. Robert Nathan Long been practicing?
Dr. Long graduated from medical school in 2012, 14 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