Dr. Thomas C. Keyserling, MD
- Medicare services, 2024
- 782
- Medicare patients, 2024
- 150
- Part D claims, 2024
- 6,084
- Publications
- 54
- Hospital affiliations
- 1
- Practice address
- 101 Manning Drive, Chapel Hill, NC 27514
- Practice phone
- Call (919) 966-4141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Keyserling's professional email, personal email and mobile number
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Dr. Thomas C. Keyserling is an internist in Chapel Hill, North Carolina
Dr. Keyserling practices at UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System.
Dr. Keyserling's NPI, 1336164615, was assigned on July 13, 2006. Dr. Keyserling graduated from Emory University School of Medicine in 1982. Dr. Keyserling holds North Carolina license 29307.
- NPI
- 1336164615NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658380076
- NPI enumeration date
- July 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (919) 966-4141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas C. Keyserling practices at UNC Hospitals in Chapel Hill, North Carolina
Dr. Keyserling's primary practice is UNC Hospitals, at 101 Manning Drive, Chapel Hill, NC 27514 in Orange County. The practice phone is (919) 966-4141.
- UNC Hospitals101 Manning Drive, Chapel Hill, NC 27514 · Orange CountyPhone(919) 966-4141
Source: Dmand AI Affiliation Data
Dr. Thomas C. Keyserling is affiliated with 2 sites of care and 1 medical group
Dr. Keyserling's primary practice is UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System. The medical group on file is UNC Faculty Physicians. Dmand AI also links Dr. Keyserling to 1 more therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas C. Keyserling's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keyserling practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UNC Hospitals | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas C. Keyserling is one of 3,705 internists in North Carolina
Internal medicine is Dr. Keyserling's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Keyserling is licensed in North Carolina.
Specialties and state licenses
- Internal medicine, North CarolinaPrimary
Internists near Dr. Keyserling
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. Thomas C. Keyserling billed Medicare for 782 services in 2024
CMS data shows 782 Medicare services from Dr. Keyserling across 11 procedure codes in 2024, for 150 Medicare patients. Medicare paid $33,063 for them. Every service was in an office.
Dr. Keyserling's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2732024: 2958%
- Other services
- 2023: 272024: 275919%
- Surgery
- 2023: 772024: 10739%
- Tests and treatments
- 2023: 432024: 105144%
- Lab and pathology
- 2023: 122024: 0100%
Dr. Keyserling compared with the North Carolina median for internists, 2024
- Dr. Keyserling
- North Carolina median
- Medicare services
- 782vs 52150% above
- Medicare patients
- 150vs 18519% below
- Part D claims
- 5,475vs 27220.1 times
Medians across 3,695 internists in North Carolina with Dmand AI profiles that report each measure.
Dr. Keyserling'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. Keyserling and other internists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas C. Keyserling treated 150 Medicare patients in 2024, average age 75
CMS counts 150 Medicare patients who saw Dr. Keyserling in 2024. The largest group is 65 to 74, with 69 patients. 75% of them have high blood pressure, and 64% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Keyserling's median patient age at 76, with 57% women.
Dr. Keyserling's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Keyserling's Medicare patients by sex, 2024
- Women8657%
- Men6443%
Chronic conditions among Dr. Keyserling's Medicare patients, 2024
- High blood pressure75%
- High cholesterol64%
- Arthritis51%
- Mood disorders29%
- Depression28%
- Ischemic heart disease26%
- Osteoporosis23%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Keyserling's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas C. Keyserling wrote 6,084 Medicare Part D claims in 2024
In 2024, Dr. Keyserling wrote 6,084 Medicare Part D claims for 331 patients. 86% of them were for generic drugs. CMS names the drug for 5,475 of them, across 112 drugs with 11 or more claims each, at $604,245 in total drug cost. In 2023, CMS named 5,281 claims across 110 drugs.
Dr. Keyserling's Part D claims by kind of drug, 2024
- Generic5,237 claims86%
- Brand-name820 claims13%
- Other27 claims0%
Dr. Keyserling'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. Keyserling's Part D claims, 2024
- Opioids3%160 of 6,084 claims
- Antibiotics2%146 of 6,084 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,2812024: 5,4754%
Drugs named by CMS: 112 in 2024, 110 in 2023.
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. Thomas C. Keyserling takes part in Medicare
Dr. Keyserling 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. Thomas C. Keyserling has 54 publications on record
Dmand AI links 54 papers to Dr. Keyserling, published from 2002 to 2024. 2013 was the busiest year, with 7. The most frequent topics are North Carolina, Cardiovascular Diseases and Diet. Dr. Keyserling has published most often in Contemp Clin Trials. Dr. Keyserling's most frequent co-authors are Larry Johnston, DO, Katrina E. Donahue, MD and Jacqueline Halladay, MD.
Dr. Keyserling's papers by year, 2013 to 2024
Topics Dr. Keyserling writes about most
- North Carolina
- Cardiovascular Diseases
- Diet
- Body Mass Index
- Obesity
- Poverty
- Health Behavior
- Residence Characteristics
Dr. Keyserling's most frequent co-authors
- Larry Johnston, DO16 shared papers
- Katrina E. Donahue, MD6 shared papers
- Jacqueline Halladay, MD5 shared papers
Recent publications by Dr. Keyserling
Am J Health Promot
Contemp Clin Trials
J Cancer Surviv
See who Dr. Keyserling researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Keyserling works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas C. Keyserling graduated from Emory University School of Medicine
Dr. Keyserling graduated from Emory University School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas C. Keyserling'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Thomas C. Keyserling
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. Thomas C. Keyserling's NPI number?
Dr. Thomas C. Keyserling's NPI number is 1336164615. It was assigned on July 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas C. Keyserling?
Dr. Thomas C. Keyserling is an internist in Chapel Hill, North Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Thomas C. Keyserling practice?
Dr. Keyserling practices at 101 Manning Drive, Chapel Hill, NC 27514. Dr. Keyserling's primary practice is UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System. Dmand AI also links Dr. Keyserling to 1 therapy and rehab clinic.
What is Dr. Thomas C. Keyserling's office phone number?
The practice phone on file for Dr. Keyserling is (919) 966-4141.
What is Dr. Thomas C. Keyserling's medical license number?
Dr. Keyserling holds North Carolina license 29307.
Which hospitals is Dr. Thomas C. Keyserling affiliated with?
Dr. Keyserling practices at UNC Hospitals in Chapel Hill, North Carolina.
What medical group is Dr. Thomas C. Keyserling part of?
Dr. Keyserling is linked to UNC Faculty Physicians.
Does Dr. Thomas C. Keyserling accept Medicare?
Yes. CMS data shows Dr. Keyserling billed Medicare for 782 services in 2024, and Dr. Keyserling accepts Medicare assignment.
How many Medicare patients does Dr. Thomas C. Keyserling see?
CMS counts 150 Medicare patients who saw Dr. Keyserling in 2024, with an average age of 75.
What services does Dr. Thomas C. Keyserling bill to Medicare?
In 2024, Dr. Keyserling's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and surgery: heart and blood vessels (36415).
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Where did Dr. Thomas C. Keyserling go to medical school?
Dr. Keyserling graduated from Emory University School of Medicine in 1982.
What drugs does Dr. Thomas C. Keyserling prescribe most?
In 2024 Medicare Part D data, Dr. Keyserling's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
How long has Dr. Thomas C. Keyserling been practicing?
Dr. Keyserling graduated from medical school in 1982, 44 years ago.
Does Dr. Thomas C. Keyserling do research?
Dmand AI links 54 publications to Dr. Keyserling, published from 2002 to 2024.
Who does Dr. Thomas C. Keyserling publish with?
Dr. Keyserling's most frequent co-authors are Larry Johnston, DO (16 shared papers), Katrina E. Donahue, MD (6 shared papers) and Jacqueline Halladay, MD (5 shared papers).
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