Dr. Charles Dewitt Hummer III, MD
- Medicare services, 2024
- 1,388
- Medicare patients, 2024
- 410
- Part D claims, 2024
- 233
- MIPS score, 2024
- 97
- Hospital affiliations
- 6
- Practice address
- 300 Evergreen Dr, Glen Mills, PA 19342
- Practice phone
- Call (484) 678-8475
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Brinton Lake ASC
Glen Mills, Pennsylvania
Find Dr. Hummer's professional email, personal email and mobile number
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Dr. Charles Dewitt Hummer III is an orthopedic surgeon in Glen Mills, Pennsylvania
Dr. Hummer practices at ChristianaCare Brinton Lake ASC in Glen Mills, Pennsylvania.
Dr. Hummer's NPI, 1912953670, was assigned on May 25, 2006. Dr. Hummer graduated from Jefferson Medical College of Thomas Jefferson University in 1989. Dr. Hummer holds Pennsylvania license MD045732L.
- NPI
- 1912953670NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678686730
- NPI enumeration date
- May 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (484) 678-8475
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles Dewitt Hummer III practices at ChristianaCare Brinton Lake ASC in Glen Mills, Pennsylvania
Dr. Hummer's primary practice is ChristianaCare Brinton Lake ASC, at 300 Evergreen Dr, Glen Mills, PA 19342 in Delaware County. The practice phone is (484) 678-8475.
- ChristianaCare Brinton Lake ASC300 Evergreen Dr, Glen Mills, PA 19342 · Delaware CountyPhone(484) 678-8475
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charles Dewitt Hummer III is affiliated with 9 sites of care and 1 medical group
Dr. Hummer's primary practice is ChristianaCare Brinton Lake ASC in Glen Mills, Pennsylvania. Dr. Hummer is also affiliated with Chester County Hospital. The medical group on file is Premier Orthopaedics. Dmand AI also links Dr. Hummer to 5 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Charles Dewitt Hummer III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hummer practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Brinton Lake ASC | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles Dewitt Hummer III is one of 994 orthopedic surgeons in Pennsylvania
Orthopaedic surgery is Dr. Hummer's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Hummer is licensed in Pennsylvania.
Specialties and state licenses
- Orthopaedic surgery, PennsylvaniaPrimary
Orthopedic surgeons near Dr. Hummer
Counts of orthopedic surgeons 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. Charles Dewitt Hummer III billed Medicare for 1,388 services in 2024
CMS data shows 1,388 Medicare services from Dr. Hummer across 8 procedure codes in 2024, for 410 Medicare patients. Medicare paid $122,342 for them.
Dr. Hummer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5382024: 66724%
- Drugs given in the office
- 2023: 3762024: 46524%
- Surgery
- 2023: 2192024: 25617%
Where Dr. Hummer's Medicare services took place, 2024
- In an office1,37799%
- In a facility111%
Dr. Hummer compared with the Pennsylvania median for orthopedic surgeons, 2024
- Dr. Hummer
- Pennsylvania median
- Medicare services
- 1,388vs 1,15320% above
- Medicare patients
- 410vs 27649% above
- Part D claims
- 162vs 10259% above
Medians across 929 orthopedic surgeons in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Hummer'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. Hummer and other orthopedic surgeons in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles Dewitt Hummer III treated 410 Medicare patients in 2024, average age 75
CMS counts 410 Medicare patients who saw Dr. Hummer in 2024. The largest group is 65 to 74, with 186 patients. 75% of them have arthritis, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hummer's median patient age at 65, with 55% women.
Dr. Hummer's Medicare patients by age, 2024
Dr. Hummer's Medicare patients by sex, 2024
- Women25362%
- Men15738%
Chronic conditions among Dr. Hummer's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure73%
- Anxiety25%
- Diabetes25%
- Ischemic heart disease23%
- Mood disorders23%
- Osteoporosis21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hummer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charles Dewitt Hummer III wrote 233 Medicare Part D claims in 2024
In 2024, Dr. Hummer wrote 233 Medicare Part D claims for 110 patients. 99% of them were for generic drugs. CMS names the drug for 162 of them, across 6 drugs with 11 or more claims each, at $515 in total drug cost. In 2023, CMS named 179 claims across 6 drugs.
Dr. Hummer's Part D claims by kind of drug, 2024
- Generic231 claims99%
- Brand-name and other2 claims1%
Dr. Hummer'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. Hummer's Part D claims, 2024
- Opioids29%67 of 233 claims
- Antibiotics15%35 of 233 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: 1792024: 1629%
Drugs named by CMS: 6 in 2024, 6 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
Dr. Charles Dewitt Hummer III scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Hummer for performance year 2024, reported as part of a group. Dr. Hummer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 12 procedures of lower limb (leg) arthroscopy (minimally invasive joint repair) by Dr. Hummer, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Hummer's MIPS scores, performance year 2024
- 97of 100Final score
- 96of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Hummer ranks in Medicare procedure volume
- Lower limb (leg) arthroscopy (minimally invasive joint repair)
- 83rd percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)
Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)
Upper limb (arm) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Charles Dewitt Hummer III received $58,196 in industry payments from 2016 to 2025
CMS Open Payments shows 185 general payments to Dr. Hummer from 26 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 45% of the total. Sanofi and Genzyme US Companies paid the most, $41,473. It also lists 1 research payment totaling $1,250 in 2021.
General payments to Dr. Hummer by program year, 2016 to 2025
General payments to Dr. Hummer by kind, 2016 to 2025
- Consulting fees$26,02245%
- Speaker and faculty fees$15,97927%
- Travel and lodging$6,64511%
- Education$5,2699%
- Other$4,2817%
Companies that paid Dr. Hummer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles Dewitt Hummer III graduated from Jefferson Medical College of Thomas Jefferson University
Dr. Hummer graduated from Jefferson Medical College of Thomas Jefferson University in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles Dewitt Hummer III'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (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. Charles Dewitt Hummer III
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What is Dr. Charles Dewitt Hummer III's NPI number?
Dr. Charles Dewitt Hummer III's NPI number is 1912953670. It was assigned on May 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles Dewitt Hummer III?
Dr. Charles Dewitt Hummer III is an orthopedic surgeon in Glen Mills, Pennsylvania. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Charles Dewitt Hummer III practice?
Dr. Hummer practices at 300 Evergreen Dr, Glen Mills, PA 19342. Dr. Hummer's primary practice is ChristianaCare Brinton Lake ASC in Glen Mills, Pennsylvania. Dmand AI also links Dr. Hummer to 5 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Charles Dewitt Hummer III's office phone number?
The practice phone on file for Dr. Hummer is (484) 678-8475.
What is Dr. Charles Dewitt Hummer III's medical license number?
Dr. Hummer holds Pennsylvania license MD045732L.
Which hospitals is Dr. Charles Dewitt Hummer III affiliated with?
Dr. Hummer is affiliated with Chester County Hospital. Dmand AI links Dr. Hummer to 5 more hospitals.
What medical group is Dr. Charles Dewitt Hummer III part of?
Dr. Hummer is linked to Premier Orthopaedics.
Does Dr. Charles Dewitt Hummer III accept Medicare?
Yes. CMS data shows Dr. Hummer billed Medicare for 1,388 services in 2024, and Dr. Hummer accepts Medicare assignment.
What is Dr. Charles Dewitt Hummer III's MIPS score?
Dr. Hummer's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Charles Dewitt Hummer III see?
CMS counts 410 Medicare patients who saw Dr. Hummer in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Charles Dewitt Hummer III bill to Medicare?
In 2024, Dr. Hummer's most billed Medicare services were injected or infused drug (J0702), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Charles Dewitt Hummer III go to medical school?
Dr. Hummer graduated from Jefferson Medical College of Thomas Jefferson University in 1989.
What drugs does Dr. Charles Dewitt Hummer III prescribe most?
In 2024 Medicare Part D data, Dr. Hummer's most prescribed drugs by claims were Meloxicam, Amoxicillin and Hydrocodone-Acetaminophen.
Has Dr. Charles Dewitt Hummer III received payments from drug or device companies?
CMS Open Payments shows $58,196 in general payments to Dr. Hummer from 26 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Charles Dewitt Hummer III been practicing?
Dr. Hummer graduated from medical school in 1989, 37 years ago.
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