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Dr. John D. Gaskill, DO
NPI1124648209PAC ID7416388160
- Medicare services, 2024
- 198
- Medicare patients, 2024
- 71
- Part D claims, 2024
- 106
- Publications
- 1
- Hospital affiliations
- 4
- Practice address
- 741 South East Main Street, Simpsonville, SC 29681
- Practice phone
- Call (864) 454-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gaskill'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. John D. Gaskill is an internist in Cleveland, Ohio
Dr. Gaskill practices at Prisma Health Hillcrest Hospital in Simpsonville, South Carolina, part of Prisma Health.
Dr. Gaskill's NPI, 1124648209, was assigned on April 20, 2020. Dr. Gaskill holds Ohio license 34.016256.
NPI and contact details
- NPI
- 1124648209NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416388160
- NPI enumeration date
- April 20, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (864) 454-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John D. Gaskill practices in Simpsonville and Cleveland
Dr. Gaskill's primary practice is Prisma Health Hillcrest Hospital, at 741 South East Main Street, Simpsonville, SC 29681 in Greenville County. The practice phone is (864) 454-6100. Dr. Gaskill also practices at Hillcrest Hospital, 6780 Mayfield Rd, Cleveland, OH 44124.
- Prisma Health Hillcrest HospitalPrimary741 South East Main Street, Simpsonville, SC 29681 · Greenville CountyPhone(864) 454-6100
- Hillcrest Hospital6780 Mayfield Rd, Cleveland, OH 44124 · Cuyahoga CountyPhone(440) 312-4500
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. John D. Gaskill is affiliated with 5 sites of care and 1 medical group
Dr. Gaskill's primary practice is Prisma Health Hillcrest Hospital in Simpsonville, South Carolina, part of Prisma Health. Dr. Gaskill is also affiliated with Cleveland Clinic Main Campus. The medical group on file is Cleveland Clinic. Dmand AI also links Dr. Gaskill to 2 more hospitals and 1 hospice, each named with a free account.
Cleveland Clinic Main CampusCleveland Clinic2 hospitalsNames with a free account1 hospiceName with a free account
See all 6 affiliations for Dr. GaskillSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John D. Gaskill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gaskill practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prisma Health Hillcrest Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John D. Gaskill is one of 4,708 internists in Ohio
Internal medicine is Dr. Gaskill's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gaskill is licensed in Ohio.
Specialties and state licenses
- Internal medicine, OhioPrimary
Internists near Dr. Gaskill
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. John D. Gaskill billed Medicare for 198 services in 2024
CMS data shows 198 Medicare services from Dr. Gaskill across 3 procedure codes in 2024, for 71 Medicare patients. Medicare paid $12,448 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024198
Medicare patients71
Paid by Medicare$12,448
Procedure codes3
Dr. Gaskill compared with the Ohio median for internists, 2024
- Dr. Gaskill
- Ohio median
- Medicare services
- 198vs 48759% below
- Medicare patients
- 71vs 19263% below
- Part D claims
- 105vs 29464% below
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Dr. Gaskill'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. Gaskill?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gaskill and other internists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John D. Gaskill treated 71 Medicare patients in 2024, average age 74
CMS counts 71 Medicare patients who saw Dr. Gaskill in 2024. The largest group is 75 to 84, with 29 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 3.08, 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. Gaskill's median patient age at 74, with 56% women.
Medicare patients, 202471
Average age74
Average risk score3.08
Also on Medicaid18%
Dr. Gaskill's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gaskill's Medicare patients by sex, 2024
- Women4259%
- Men2941%
Chronic conditions among Dr. Gaskill's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Mood disorders54%
- Depression51%
- Heart failure46%
- Chronic kidney disease45%
- Ischemic heart disease44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gaskill'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%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John D. Gaskill wrote 106 Medicare Part D claims in 2024
In 2024, Dr. Gaskill wrote 106 Medicare Part D claims for 44 patients. 83% of them were for generic drugs. CMS names the drug for 105 of them, across 5 drugs with 11 or more claims each, at $16,522 in total drug cost. In 2022, CMS named 188 claims across 10 drugs.
Part D claims, 2024106
Drugs named by CMS5
Total drug cost$16,522
Part D patients44
Dr. Gaskill's Part D claims by kind of drug, 2024
- Generic88 claims83%
- Brand-name18 claims17%
Dr. Gaskill's most prescribed drugs by claims, 2023
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. Gaskill's Part D claims, 2024
- Opioids11%12 of 106 claims
- Antibiotics10%11 of 106 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1882023: 10544%
Drugs named by CMS: 5 in 2023, 10 in 2022.
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. John D. Gaskill takes part in Medicare
Dr. Gaskill 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. John D. Gaskill has 1 publication on record
Dmand AI links 1 paper to Dr. Gaskill in 2024. Dr. Gaskill's most frequent co-author is Demetra S. Gibson, MD.
Papers1
Dr. Gaskill's most frequent co-authors
Recent publications by Dr. Gaskill
See who Dr. Gaskill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gaskill works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. John D. Gaskill'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) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. John D. Gaskill
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. John D. Gaskill's NPI number?
Dr. John D. Gaskill's NPI number is 1124648209. It was assigned on April 20, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. John D. Gaskill?
Dr. John D. Gaskill is an internist in Cleveland, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John D. Gaskill practice?
Dr. Gaskill practices at 741 South East Main Street, Simpsonville, SC 29681. Dr. Gaskill also practices at 6780 Mayfield Rd, Cleveland, OH 44124. Dr. Gaskill's primary practice is Prisma Health Hillcrest Hospital in Simpsonville, South Carolina, part of Prisma Health. Dmand AI also links Dr. Gaskill to 2 hospitals and 1 hospice.
What is Dr. John D. Gaskill's office phone number?
The practice phone on file for Dr. Gaskill is (864) 454-6100.
What is Dr. John D. Gaskill's medical license number?
Dr. Gaskill holds Ohio license 34.016256.
Which hospitals is Dr. John D. Gaskill affiliated with?
Dr. Gaskill practices at Prisma Health Hillcrest Hospital in Simpsonville, South Carolina. Dr. Gaskill is also affiliated with Cleveland Clinic Main Campus. Dmand AI links Dr. Gaskill to 2 more hospitals.
What medical group is Dr. John D. Gaskill part of?
Dr. Gaskill is linked to Cleveland Clinic.
Does Dr. John D. Gaskill accept Medicare?
Yes. CMS data shows Dr. Gaskill billed Medicare for 198 services in 2024, and Dr. Gaskill accepts Medicare assignment.
How many Medicare patients does Dr. John D. Gaskill see?
CMS counts 71 Medicare patients who saw Dr. Gaskill in 2024, with an average age of 74.
What services does Dr. John D. Gaskill bill to Medicare?
In 2024, Dr. Gaskill's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99238) and hospital inpatient care (99222).
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What drugs does Dr. John D. Gaskill prescribe most?
In 2023 Medicare Part D data, Dr. Gaskill's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Jardiance.
How long has Dr. John D. Gaskill been practicing?
Dr. Gaskill graduated from medical school in 2020, 6 years ago.
Does Dr. John D. Gaskill do research?
Dmand AI links 1 publication to Dr. Gaskill.
Who does Dr. John D. Gaskill publish with?
Dr. Gaskill's most frequent co-authors are Demetra S. Gibson, MD (1 shared paper).
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