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Dr. Charlotte Louise Barker, DO
NPI1689202988
- Medicare services, 2024
- 120
- Medicare patients, 2024
- 130
- Part D claims, 2024
- 13
- Publications
- 1
- MIPS score, 2024
- 100
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Barker's professional email, personal email and mobile number
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Dr. Charlotte Louise Barker is an internist in Mendon, Massachusetts
Dr. Barker practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Barker's NPI, 1689202988, was assigned on March 31, 2020. Dr. Barker graduated from University of New England, College of Osteo Medicine in 2020. Dr. Barker holds Massachusetts license 295462.
NPI and contact details
- NPI
- 1689202988NPI Registry (opens in a new tab)
- NPI enumeration date
- March 31, 2020
- NPI status
- Active
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Charlotte Louise Barker practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Barker's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Charlotte Louise Barker is affiliated with 2 sites of care and 1 medical group
Dr. Barker's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Barker to 1 more group practice or clinic, named with a free account.
Umass Memorial Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Charlotte Louise Barker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | 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. Charlotte Louise Barker is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Barker's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Barker is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Barker
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. Charlotte Louise Barker billed Medicare for 120 services in 2024
CMS data shows 120 Medicare services from Dr. Barker across 2 procedure codes in 2024, for 130 Medicare patients. Medicare paid $14,176 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024120
Medicare patients130
Paid by Medicare$14,176
Procedure codes2
Dr. Barker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1532024: 12022%
Dr. Barker compared with the Massachusetts median for internists, 2024
- Dr. Barker
- Massachusetts median
- Medicare services
- 120vs 43172% below
- Medicare patients
- 130vs 19433% below
- Part D claims
- 29vs 40293% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Barker'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charlotte Louise Barker treated 130 Medicare patients in 2024, average age 73
CMS counts 130 Medicare patients who saw Dr. Barker in 2024. The largest group is 65 to 74, with 35 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 2.80, 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. Barker's median patient age at 71, with 43% women.
Medicare patients, 2024130
Average age73
Average risk score2.80
Also on Medicaid42%
Dr. Barker's Medicare patients by age, 2024
Dr. Barker's Medicare patients by sex, 2024
- Women7054%
- Men6046%
Chronic conditions among Dr. Barker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders58%
- Anxiety56%
- Depression55%
- Arthritis53%
- Chronic kidney disease48%
- Heart failure48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women43%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Charlotte Louise Barker wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Barker wrote 13 Medicare Part D claims. 85% of them were for generic drugs. They cover 2 drugs, with $343 in total drug cost.
Part D claims, 202413
Drugs named by CMS2
Total drug cost$343
Dr. Barker's Part D claims by kind of drug, 2024
- Generic11 claims85%
- Brand-name and other2 claims15%
Dr. Barker'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.
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. Charlotte Louise Barker scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Barker for performance year 2024, reported through an alternative payment model (APM).
Dr. Barker's MIPS scores, performance year 2024
- 100of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Charlotte Louise Barker has 1 publication on record
Dmand AI links 1 paper to Dr. Barker. Dr. Barker's most frequent co-authors are Barham K. Abu Dayyeh, MD, Michael Flicker, MD and Pichamol Jirapinyo, MD.
Papers1
Dr. Barker's most frequent co-authors
- Barham K. Abu Dayyeh, MD1 shared paper
- Michael Flicker, MD1 shared paper
- Pichamol Jirapinyo, MD1 shared paper
Recent publications by Dr. Barker
See who Dr. Barker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Barker 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. Charlotte Louise Barker graduated from University of New England, College of Osteo Medicine
Dr. Barker graduated from University of New England, College of Osteo Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charlotte Louise Barker'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 | Clinician Public Reporting: Overall MIPS Performance (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. Charlotte Louise Barker
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. Charlotte Louise Barker's NPI number?
Dr. Charlotte Louise Barker's NPI number is 1689202988. It was assigned on March 31, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Charlotte Louise Barker?
Dr. Charlotte Louise Barker is an internist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Charlotte Louise Barker practice?
Dr. Barker practices at 55 North Ave, Mendon, MA 01756. Dr. Barker's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Barker to 1 group practice or clinic.
What is Dr. Charlotte Louise Barker's office phone number?
The practice phone on file for Dr. Barker is (508) 334-1000.
What is Dr. Charlotte Louise Barker's medical license number?
Dr. Barker holds Massachusetts license 295462.
What medical group is Dr. Charlotte Louise Barker part of?
Dr. Barker is linked to UMass Memorial Medical Group.
Does Dr. Charlotte Louise Barker accept Medicare?
Yes. CMS data shows Dr. Barker billed Medicare for 120 services in 2024.
What is Dr. Charlotte Louise Barker's MIPS score?
Dr. Barker's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Charlotte Louise Barker see?
CMS counts 130 Medicare patients who saw Dr. Barker in 2024, with an average age of 73.
What services does Dr. Charlotte Louise Barker bill to Medicare?
In 2024, Dr. Barker's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
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Where did Dr. Charlotte Louise Barker go to medical school?
Dr. Barker graduated from University of New England, College of Osteo Medicine in 2020.
What drugs does Dr. Charlotte Louise Barker prescribe most?
In 2023 Medicare Part D data, Dr. Barker's most prescribed drugs by claims were Metoprolol Succinate and Spironolactone.
How long has Dr. Charlotte Louise Barker been practicing?
Dr. Barker graduated from medical school in 2020, 6 years ago.
Does Dr. Charlotte Louise Barker do research?
Dmand AI links 1 publication to Dr. Barker.
Who does Dr. Charlotte Louise Barker publish with?
Dr. Barker's most frequent co-authors are Barham K. Abu Dayyeh, MD (1 shared paper), Michael Flicker, MD (1 shared paper) and Pichamol Jirapinyo, MD (1 shared paper).
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