Dr. Michael R. Knowles, MD
- Medicare services, 2019
- 194
- Part D claims, 2020
- 24
- Publications
- 146
- Clinical trials
- 7
- Industry payments
- $74,852
- Practice address
- 101 Manning Dr, Chapel Hill, NC 27514
- Practice phone
- Call (919) 966-4996
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Knowles' professional email, personal email and mobile number
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Dr. Michael R. Knowles is a pulmonologist in Chapel Hill, North Carolina
Dr. Knowles practices in Chapel Hill, North Carolina.
Dr. Knowles' NPI, 1932276110, was assigned on November 30, 2006. Dr. Knowles graduated from University of North Carolina at Chapel Hill School of Medicine in 1971. Dr. Knowles holds North Carolina license 17381.
- NPI
- 1932276110NPI Registry (opens in a new tab)
- NPI enumeration date
- November 30, 2006
- NPI status
- Active
- Practice phone
- (919) 966-4996
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 81
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Michael R. Knowles' practice address is in Chapel Hill, North Carolina
Dr. Knowles' practice address in the NPI Registry is 101 Manning Dr, Chapel Hill, NC 27514, in Orange County. The practice phone is (919) 966-4996.
- NPI Registry address101 Manning Dr, Chapel Hill, NC 27514 · Orange CountyPhone(919) 966-4996
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael R. Knowles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowles practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Knowles' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael R. Knowles is one of 410 pulmonologists in North Carolina
Pulmonary disease is Dr. Knowles' primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Knowles is licensed in North Carolina.
Specialties and state licenses
- Pulmonary disease, North CarolinaPrimary
Pulmonologists near Dr. Knowles
Counts of pulmonologists 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. Michael R. Knowles billed Medicare for 194 services in 2019
CMS data shows 194 Medicare services from Dr. Knowles across 4 procedure codes in 2019. Medicare paid $14,405 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Knowles' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 2142019: 1949%
- Tests and treatments
- 2018: 282019: 0100%
Dr. Knowles compared with the North Carolina median for pulmonologists, 2019
- Dr. Knowles
- North Carolina median
- Medicare services
- 194vs 53464% below
- Part D claims
- 24vs 64896% below
Medians across 392 pulmonologists in North Carolina with Dmand AI profiles that report each measure.
Dr. Knowles' most billed Medicare procedure codes, 2019
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. Knowles?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knowles and other pulmonologists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael R. Knowles' patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Knowles' median patient age at 52, with 50% women.
Dr. Knowles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Michael R. Knowles wrote 24 Medicare Part D claims in 2020
In 2020, Dr. Knowles wrote 24 Medicare Part D claims. They cover 2 drugs, with $9,890 in total drug cost.
Dr. Knowles' most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Michael R. Knowles has 146 publications on record
Dmand AI links 146 papers to Dr. Knowles, published from 2010 to 2025. 2019 was the busiest year, with 16. The most frequent topics are Cystic Fibrosis, Cilia and Kartagener Syndrome. Dr. Knowles has published most often in Ann Am Thorac Soc. Dr. Knowles' most frequent co-authors are Margaret Leigh, MD, Garry R. Cutting, MD and Margaret Rosenfeld.
Dr. Knowles' papers by year, 2016 to 2025
Topics Dr. Knowles writes about most
- Cystic Fibrosis
- Cilia
- Kartagener Syndrome
- Ciliary Motility Disorders
- Phenotype
- Genotype
- Genome-Wide Association Study
- Cystic Fibrosis Transmembrane Conductance Regulator
Dr. Knowles' most frequent co-authors
- Margaret Leigh, MD66 shared papers
- Garry R. Cutting, MD30 shared papers
- Margaret Rosenfeld29 shared papers
Recent publications by Dr. Knowles
Pediatr Pulmonol
Am J Med Genet A
See who Dr. Knowles researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Knowles works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael R. Knowles has worked on 7 clinical trials
Dmand AI links Dr. Knowles to 7 clinical trials. 3 are still active or recruiting. Conditions studied include Kartagener Syndrome, Dextrocardia and Cystic Fibrosis. University of North Carolina, Chapel Hill sponsors the most, 7.
Conditions in Dr. Knowles' trials
- Kartagener Syndrome
- Dextrocardia
- Cystic Fibrosis
- Infant, Newborn, Diseases
Investigators on the most trials with Dr. Knowles
Recent clinical trials with Dr. Knowles
Genetic Modifiers of CF Liver Disease (opens in a new tab)
Gene Modifiers of Cystic Fibrosis Lung Disease (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Michael R. Knowles received $74,852 in industry payments from 2016 to 2022
CMS Open Payments shows 33 general payments to Dr. Knowles from 3 drug and device companies from 2016 to 2022. Consulting fees make up the largest share, 97% of the total. Vertex Pharmaceuticals Incorporated paid the most, $74,028.
General payments to Dr. Knowles by program year, 2016 to 2022
General payments to Dr. Knowles by kind, 2016 to 2022
- Consulting fees$72,33097%
- Travel and lodging$1,5492%
- Food and beverage$9731%
Companies that paid Dr. Knowles the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael R. Knowles graduated from University of North Carolina at Chapel Hill School of Medicine
Dr. Knowles graduated from University of North Carolina at Chapel Hill School of Medicine in 1971.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael R. Knowles'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 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Michael R. Knowles
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. Michael R. Knowles' NPI number?
Dr. Michael R. Knowles' NPI number is 1932276110. It was assigned on November 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael R. Knowles?
Dr. Michael R. Knowles is a pulmonologist in Chapel Hill, North Carolina. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Michael R. Knowles practice?
Dr. Knowles practices at 101 Manning Dr, Chapel Hill, NC 27514.
What is Dr. Michael R. Knowles' office phone number?
The practice phone on file for Dr. Knowles is (919) 966-4996.
What is Dr. Michael R. Knowles' medical license number?
Dr. Knowles holds North Carolina license 17381.
Does Dr. Michael R. Knowles accept Medicare?
Yes. CMS data shows Dr. Knowles billed Medicare for 194 services in 2019.
What services does Dr. Michael R. Knowles bill to Medicare?
In 2019, Dr. Knowles' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99223).
Where did Dr. Michael R. Knowles go to medical school?
Dr. Knowles graduated from University of North Carolina at Chapel Hill School of Medicine in 1971.
What drugs does Dr. Michael R. Knowles prescribe most?
In 2020 Medicare Part D data, Dr. Knowles' most prescribed drugs by claims were Amikacin Sulfate and Imipenem-Cilastatin Sodium.
Has Dr. Michael R. Knowles received payments from drug or device companies?
CMS Open Payments shows $74,852 in general payments to Dr. Knowles from 3 companies from 2016 to 2022. The largest total came from Vertex Pharmaceuticals Incorporated.
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How long has Dr. Michael R. Knowles been practicing?
Dr. Knowles graduated from medical school in 1971, 55 years ago.
Does Dr. Michael R. Knowles do research?
Dmand AI links 146 publications to Dr. Knowles, published from 2010 to 2025. Dr. Knowles has worked on 7 clinical trials.
Who does Dr. Michael R. Knowles publish with?
Dr. Knowles' most frequent co-authors are Margaret Leigh, MD (66 shared papers), Garry R. Cutting, MD (30 shared papers) and Margaret Rosenfeld (29 shared papers).
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