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Dr. Karen Chahal, MD
NPI1477083749PAC ID8022380401
- Medicare services, 2024
- 739
- Medicare patients, 2024
- 198
- Part D claims, 2024
- 18
- Publications
- 5
- Hospital affiliations
- 3
- Practice address
- 330 Brookline Avenue, Boston, MA 02215
- Practice phone
- Call (617) 667-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chahal'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.
Dr. Karen Chahal is an internist in Boston, Massachusetts
Dr. Chahal practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
Dr. Chahal's NPI, 1477083749, was assigned on June 19, 2017. Dr. Chahal graduated from University of Toledo College of Medicine in 2017. Dr. Chahal holds Massachusetts license 271862.
NPI and contact details
- NPI
- 1477083749NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022380401
- NPI enumeration date
- June 19, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 667-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen Chahal practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts
Dr. Chahal's primary practice is Beth Israel Deaconess Medical Center, at 330 Brookline Avenue, Boston, MA 02215 in Suffolk County. The practice phone is (617) 667-7000.
- Beth Israel Deaconess Medical Center330 Brookline Avenue, Boston, MA 02215 · Suffolk CountyPhone(617) 667-7000
Source: Dmand AI Affiliation Data
Dr. Karen Chahal is affiliated with 3 sites of care and 1 medical group
Dr. Chahal's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. Dr. Chahal is also affiliated with Beth Israel Deaconess Hospital-Needham. The medical group on file is Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI also links Dr. Chahal to 1 more hospital, named with a free account.
Beth Israel Deaconess Hospital-NeedhamHarvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP)1 hospitalName with a free account
See all 4 affiliations for Dr. ChahalSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karen Chahal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chahal practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beth Israel Deaconess Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Karen Chahal is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Chahal's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chahal is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Chahal
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,528internists in Massachusetts1,712internists in Boston188internists at Beth Israel Deaconess Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Karen Chahal billed Medicare for 739 services in 2024
CMS data shows 739 Medicare services from Dr. Chahal across 11 procedure codes in 2024, for 198 Medicare patients. Medicare paid $60,894 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024739
Medicare patients198
Paid by Medicare$60,894
Procedure codes11
Dr. Chahal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5662024: 5522%
- Other services
- 2023: 1782024: 1875%
Dr. Chahal compared with the Massachusetts median for internists, 2024
- Dr. Chahal
- Massachusetts median
- Medicare services
- 739vs 43171% above
- Medicare patients
- 198vs 194Close to median
- Part D claims
- 73vs 40282% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Chahal'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 Dr. Chahal?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chahal and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Chahal treated 198 Medicare patients in 2024, average age 82
CMS counts 198 Medicare patients who saw Dr. Chahal in 2024. The largest group is 85 and over, with 78 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.77, 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. Chahal's median patient age at 75, with 72% women.
Medicare patients, 2024198
Average age82
Average risk score1.77
Also on Medicaid23%
Dr. Chahal's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chahal's Medicare patients by sex, 2024
- Women14071%
- Men5829%
Chronic conditions among Dr. Chahal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Osteoporosis72%
- Arthritis61%
- Mood disorders61%
- Depression54%
- Anxiety52%
- Chronic kidney disease48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chahal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women72%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen Chahal wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Chahal wrote 18 Medicare Part D claims. 94% of them were for generic drugs. They cover 5 drugs, with $1,297 in total drug cost. In 2022, CMS named 13 claims across 1 drug.
Part D claims, 202418
Drugs named by CMS5
Total drug cost$1,297
Dr. Chahal's Part D claims by kind of drug, 2024
- Generic17 claims94%
- Brand-name and other1 claims6%
Dr. Chahal'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.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 132023: 73462%
Drugs named by CMS: 5 in 2023, 1 in 2022.
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. Karen Chahal takes part in Medicare
Dr. Chahal 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. Karen Chahal has 5 publications on record
Dmand AI links 5 papers to Dr. Chahal, published from 2023 to 2025. 2023 was the busiest year, with 2. The most frequent topics are Frailty and Hip Fractures. Dr. Chahal's most frequent co-authors are Angela M. Bader, MD, Julia Vivian Loewenthal, MD and Jeremy D. Whyman, MD.
Papers5
Years published2023 to 2025
Dr. Chahal's papers by year, 2023 to 2025
Topics Dr. Chahal writes about most
- Frailty
- Hip Fractures
Dr. Chahal's most frequent co-authors
- Angela M. Bader, MD2 shared papers
- Julia Vivian Loewenthal, MD1 shared paper
- Jeremy D. Whyman, MD1 shared paper
Recent publications by Dr. Chahal
AnesthesiologistsAttitude of Health PersonnelCardiopulmonary Resuscitation
Orthop Clin North Am
Fractures, BoneGeriatric AssessmentHip Fractures
Osteoporos Int
Frail ElderlyFrailtyHip Fractures
See who Dr. Chahal researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chahal 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. Karen Chahal received $33 in industry payments from 2017 to 2018
CMS Open Payments shows 2 general payments to Dr. Chahal from 2 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. TESARO, Inc. paid the most, $17.
General payments to Dr. Chahal by program year, 2017 to 2018
Companies that paid Dr. Chahal the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen Chahal graduated from University of Toledo College of Medicine
Dr. Chahal graduated from University of Toledo College of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen Chahal'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 |
| 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. Karen Chahal
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. Karen Chahal's NPI number?
Dr. Karen Chahal's NPI number is 1477083749. It was assigned on June 19, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Chahal?
Dr. Karen Chahal is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Karen Chahal practice?
Dr. Chahal practices at 330 Brookline Avenue, Boston, MA 02215. Dr. Chahal's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Dr. Chahal to 1 hospital.
What is Dr. Karen Chahal's office phone number?
The practice phone on file for Dr. Chahal is (617) 667-7000.
What is Dr. Karen Chahal's medical license number?
Dr. Chahal holds Massachusetts license 271862.
Which hospitals is Dr. Karen Chahal affiliated with?
Dr. Chahal practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts. Dr. Chahal is also affiliated with Beth Israel Deaconess Hospital-Needham. Dmand AI links Dr. Chahal to 1 more hospital.
What medical group is Dr. Karen Chahal part of?
Dr. Chahal is linked to Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP).
Does Dr. Karen Chahal accept Medicare?
Yes. CMS data shows Dr. Chahal billed Medicare for 739 services in 2024, and Dr. Chahal accepts Medicare assignment.
How many Medicare patients does Dr. Karen Chahal see?
CMS counts 198 Medicare patients who saw Dr. Chahal in 2024, with an average age of 82.
What services does Dr. Karen Chahal bill to Medicare?
In 2024, Dr. Chahal's most billed Medicare services were hospital inpatient care (99233), medicare service (G0316) and hospital inpatient care (99223).
Show 6 more questionsShow fewer questions
Where did Dr. Karen Chahal go to medical school?
Dr. Chahal graduated from University of Toledo College of Medicine in 2017.
What drugs does Dr. Karen Chahal prescribe most?
In 2023 Medicare Part D data, Dr. Chahal's most prescribed drugs by claims were Omeprazole, Metformin HCl and Atorvastatin Calcium.
Has Dr. Karen Chahal received payments from drug or device companies?
CMS Open Payments shows $33 in general payments to Dr. Chahal from 2 companies from 2017 to 2018. The largest total came from TESARO, Inc.
How long has Dr. Karen Chahal been practicing?
Dr. Chahal graduated from medical school in 2017, 9 years ago.
Does Dr. Karen Chahal do research?
Dmand AI links 5 publications to Dr. Chahal, published from 2023 to 2025.
Who does Dr. Karen Chahal publish with?
Dr. Chahal's most frequent co-authors are Angela M. Bader, MD (2 shared papers), Julia Vivian Loewenthal, MD (1 shared paper) and Jeremy D. Whyman, MD (1 shared paper).
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