John Barnhill
- Part D claims, 2024
- 121
- Industry payments
- $1,981
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 2 Medical Park Rd, Columbia, SC 29203-6808
- Practice phone
- Call (803) 545-5321
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find John Barnhill'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.
John Barnhill is an internist in Columbia, South Carolina
John Barnhill practices in Columbia, South Carolina.
John Barnhill's NPI, 1609516509, was assigned on March 30, 2022. John Barnhill holds South Carolina license LL87777.
- NPI
- 1609516509NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547641300
- NPI enumeration date
- March 30, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (803) 545-5321
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
John Barnhill's practice address is in Columbia, South Carolina
John Barnhill's practice address in the NPI Registry is 2 Medical Park Rd, Columbia, SC 29203-6808. The practice phone is (803) 545-5321.
- NPI Registry address2 Medical Park Rd, Columbia, SC 29203-6808Phone(803) 545-5321
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at John Barnhill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Barnhill practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Barnhill's practice | 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.
John Barnhill is one of 1,707 internists in South Carolina
Internal medicine is John Barnhill's primary specialty in the NPI Registry, under taxonomy code 207R00000X. John Barnhill is licensed in South Carolina.
Specialties and state licenses
- Internal medicine, South CarolinaPrimary
Internists near John Barnhill
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
John Barnhill's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts John Barnhill's median patient age at 58, with 100% women.
John Barnhill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
John Barnhill wrote 121 Medicare Part D claims in 2024
In 2024, John Barnhill wrote 121 Medicare Part D claims for 41 patients. 61% of them were for generic drugs. CMS names the drug for 48 of them, across 3 drugs with 11 or more claims each, at $803 in total drug cost.
John Barnhill's Part D claims by kind of drug, 2024
- Generic74 claims61%
- Brand-name47 claims39%
John Barnhill'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.
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 John Barnhill takes part in Medicare
John Barnhill 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)
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.
John Barnhill received $1,981 in industry payments from 2022 to 2025
CMS Open Payments shows 22 general payments to John Barnhill from 9 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $712.
General payments to John Barnhill by program year, 2022 to 2025
Companies that paid John Barnhill the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John Barnhill'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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 John Barnhill
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Barnhill's NPI number?
John Barnhill's NPI number is 1609516509. It was assigned on March 30, 2022, and it is active in the NPI Registry.
What does John Barnhill specialize in?
John Barnhill is an internist in Columbia, South Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does John Barnhill practice?
John Barnhill practices at 2 Medical Park Rd, Columbia, SC 29203-6808.
What is John Barnhill's office phone number?
The practice phone on file for John Barnhill is (803) 545-5321.
What is John Barnhill's medical license number?
John Barnhill holds South Carolina license LL87777.
Does John Barnhill accept Medicare?
Yes. CMS lists John Barnhill as accepting Medicare assignment.
What drugs does John Barnhill prescribe most?
In 2024 Medicare Part D data, John Barnhill's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Prednisolone Acetate.
Has John Barnhill received payments from drug or device companies?
CMS Open Payments shows $1,981 in general payments to John Barnhill from 9 companies from 2022 to 2025. The largest total came from Alcon Laboratories Inc.
How long has John Barnhill been practicing?
John Barnhill's NPI was assigned in 2022.
Selling to internal medicine practices?
See internists in South Carolina 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