Ambulatory Surgical ProceduresAnesthesia, ConductionAnesthesiologists
Karen C. Nielsen
NPI1902980816PAC ID0941197644
- Medicare services, 2024
- 254
- Medicare patients, 2024
- 350
- Publications
- 8
- Hospital affiliations
- 1
- Industry payments
- $66
- Practice address
- 2301 Erwin Rd, Durham, NC 27705
- Practice phone
- Call (919) 684-8111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Karen Nielsen'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.
Karen C. Nielsen is an anesthesiologist in Durham, North Carolina
Karen Nielsen practices at Duke University Hospital in Durham, North Carolina, part of Duke University.
Karen Nielsen's NPI, 1902980816, was assigned on October 25, 2006. Karen Nielsen holds North Carolina license 99-01092.
NPI and contact details
- NPI
- 1902980816NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941197644
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (919) 684-8111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Karen C. Nielsen practices at Duke University Hospital in Durham, North Carolina
Karen Nielsen's primary practice is Duke University Hospital, at 2301 Erwin Rd, Durham, NC 27705 in Durham County. The practice phone is (919) 684-8111.
- Duke University Hospital2301 Erwin Rd, Durham, NC 27705 · Durham CountyPhone(919) 684-8111
Source: Dmand AI Affiliation Data
Karen C. Nielsen is affiliated with 2 sites of care and 1 medical group
Karen Nielsen's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University. The medical group on file is Duke Health Integrated Practice. Dmand AI also links Karen Nielsen to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Karen C. Nielsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Karen Nielsen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duke University Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Karen Nielsen practices
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Karen C. Nielsen is one of 1,269 anesthesiologists in North Carolina
Anesthesiology is Karen Nielsen's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Karen Nielsen is licensed in North Carolina.
Specialties and state licenses
- Anesthesiology, North CarolinaPrimary
Anesthesiologists near Karen Nielsen
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
1,269anesthesiologists in North Carolina159anesthesiologists in Durham103anesthesiologists at Duke University Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Karen C. Nielsen billed Medicare for 254 services in 2024
CMS data shows 254 Medicare services from Karen Nielsen across 11 procedure codes in 2024, for 350 Medicare patients. Medicare paid $19,462 for them.
Medicare services, 2024254
Medicare patients350
Paid by Medicare$19,462
Procedure codes11
Karen Nielsen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1602024: 25459%
Where Karen Nielsen's Medicare services took place, 2024
- In an office16264%
- In a facility9236%
Karen Nielsen compared with the North Carolina median for anesthesiologists, 2024
- Karen Nielsen
- North Carolina median
- Medicare services
- 254vs 1132.2 times
- Medicare patients
- 350vs 19778% above
Medians across 1,251 anesthesiologists in North Carolina with Dmand AI profiles that report each measure.
Karen Nielsen'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 Karen Nielsen?
Medicare shows one payer. Book a meeting to get commercial claims data for Karen Nielsen and other anesthesiologists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Karen C. Nielsen treated 350 Medicare patients in 2024, average age 71
CMS counts 350 Medicare patients who saw Karen Nielsen in 2024. The largest group is 65 to 74, with 201 patients. 73% of them have high cholesterol, and 67% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.13, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Karen Nielsen's median patient age at 67, with 66% women.
Medicare patients, 2024350
Average age71
Average risk score1.13
Also on Medicaid7%
Karen Nielsen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Karen Nielsen's Medicare patients by sex, 2024
- Women22765%
- Men12335%
Chronic conditions among Karen Nielsen's Medicare patients, 2024
- High cholesterol73%
- High blood pressure67%
- Arthritis59%
- Cancer34%
- Diabetes27%
- Mood disorders26%
- Anxiety23%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Karen Nielsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Karen C. Nielsen takes part in Medicare
Karen Nielsen 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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Karen C. Nielsen has 8 publications on record
Dmand AI links 8 papers to Karen Nielsen, published from 2014 to 2019. 2014 was the busiest year, with 2. The most frequent topics are Ambulatory Surgical Procedures, Nerve Block and Anesthesia, Conduction. Karen Nielsen has published most often in Anesthesiol Clin. Karen Nielsen's most frequent co-authors are Stephen M. Klein, MD, M Stephen Melton, MD and Tong Joo Gan, MD.
Papers8
Years published2014 to 2019
Karen Nielsen's papers by year, 2014 to 2019
Topics Karen Nielsen writes about most
- Ambulatory Surgical Procedures
- Nerve Block
- Anesthesia, Conduction
- Peripheral Nerves
Karen Nielsen's most frequent co-authors
- Stephen M. Klein, MD6 shared papers
- M Stephen Melton, MD5 shared papers
- Tong Joo Gan, MD2 shared papers
Recent publications by Karen Nielsen
Cognition DisordersDexamethasoneDouble-Blind Method
Ambulatory Surgical ProceduresAnalgesicsAnesthesia
AntiemeticsIsoquinolinesNeurokinin-1 Receptor Antagonists
Ambulatory Surgical ProceduresAnesthesia Recovery PeriodBody Mass Index
See who Karen Nielsen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Karen Nielsen works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Karen C. Nielsen received $66 in industry payments in 2018
CMS Open Payments shows 1 general payment to Karen Nielsen from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Pacira Pharmaceuticals Incorporated paid the most, $66.
Companies that paid Karen Nielsen the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Karen C. Nielsen'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) |
| 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 |
| 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 Karen C. Nielsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Karen C. Nielsen's NPI number?
Karen C. Nielsen's NPI number is 1902980816. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What does Karen C. Nielsen specialize in?
Karen C. Nielsen is an anesthesiologist in Durham, North Carolina. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Karen C. Nielsen practice?
Karen Nielsen practices at 2301 Erwin Rd, Durham, NC 27705. Karen Nielsen's primary practice is Duke University Hospital in Durham, North Carolina, part of Duke University. Dmand AI also links Karen Nielsen to 1 group practice or clinic.
What is Karen C. Nielsen's office phone number?
The practice phone on file for Karen Nielsen is (919) 684-8111.
What is Karen C. Nielsen's medical license number?
Karen Nielsen holds North Carolina license 99-01092.
Which hospitals is Karen C. Nielsen affiliated with?
Karen Nielsen practices at Duke University Hospital in Durham, North Carolina.
What medical group is Karen C. Nielsen part of?
Karen Nielsen is linked to Duke Health Integrated Practice.
Does Karen C. Nielsen accept Medicare?
Yes. CMS data shows Karen Nielsen billed Medicare for 254 services in 2024, and Karen Nielsen accepts Medicare assignment.
How many Medicare patients does Karen C. Nielsen see?
CMS counts 350 Medicare patients who saw Karen Nielsen in 2024, with an average age of 71.
What services does Karen C. Nielsen bill to Medicare?
In 2024, Karen Nielsen's most billed Medicare services were anesthesia (00142), anesthesia (00400) and anesthesia (01610).
Show 4 more questionsShow fewer questions
Has Karen C. Nielsen received payments from drug or device companies?
CMS Open Payments shows $66 in general payments to Karen Nielsen from 1 company from 2018 to 2018. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Karen C. Nielsen been practicing?
Karen Nielsen graduated from medical school in 1995, 31 years ago.
Does Karen C. Nielsen do research?
Dmand AI links 8 publications to Karen Nielsen, published from 2014 to 2019.
Who does Karen C. Nielsen publish with?
Karen Nielsen's most frequent co-authors are Stephen M. Klein, MD (6 shared papers), M Stephen Melton, MD (5 shared papers) and Tong Joo Gan, MD (2 shared papers).
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