Dr. Karen Lynn Sadler, MD
- Hospital affiliations
- 2
- Medical groups
- 3
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sadler'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 Lynn Sadler is a pediatrician in Boston, Massachusetts
Dr. Sadler practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Sadler's NPI, 1396726543, was assigned on November 7, 2005. Dr. Sadler graduated from Harvard Medical School in 1988. Dr. Sadler holds Massachusetts license 72315.
- NPI
- 1396726543NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931004645
- NPI enumeration date
- November 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen Lynn Sadler practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Sadler's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Karen Lynn Sadler is affiliated with 3 sites of care and 3 medical groups
Dr. Sadler's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Sadler is also affiliated with Framingham Union Hospital. The medical group on file is Massachusetts General Hospital. Dmand AI also links Dr. Sadler to 2 more medical groups and 1 community health center, each named with a free account. Dr. Sadler's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karen Lynn Sadler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sadler practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Karen Lynn Sadler is one of 2,101 pediatricians in Massachusetts
Pediatrics is Dr. Sadler's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Sadler is licensed in Massachusetts.
Specialties and state licenses
- Pediatrics, MassachusettsPrimary
Pediatricians near Dr. Sadler
Counts of pediatricians 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. Karen Lynn Sadler's patients have a median age of 22
Across all payers, Dmand AI patient panel data puts Dr. Sadler's median patient age at 22, with 74% women.
Dr. Sadler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 22
Patient panel by sex, all payers
- Women74%
- Men26%
Source: Dmand AI Patient Panel Data
How Dr. Karen Lynn Sadler takes part in Medicare
Dr. Sadler 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)
Dr. Karen Lynn Sadler graduated from Harvard Medical School
Dr. Sadler graduated from Harvard Medical School in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen Lynn Sadler'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Lynn Sadler
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 Lynn Sadler's NPI number?
Dr. Karen Lynn Sadler's NPI number is 1396726543. It was assigned on November 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Lynn Sadler?
Dr. Karen Lynn Sadler is a pediatrician in Boston, Massachusetts. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Karen Lynn Sadler practice?
Dr. Sadler practices at 55 Fruit Street, Boston, MA 02114. Dr. Sadler's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Sadler to 2 medical groups and 1 community health center.
What is Dr. Karen Lynn Sadler's office phone number?
The practice phone on file for Dr. Sadler is (617) 726-2000.
What is Dr. Karen Lynn Sadler's medical license number?
Dr. Sadler holds Massachusetts license 72315.
Which hospitals is Dr. Karen Lynn Sadler affiliated with?
Dr. Sadler practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Sadler is also affiliated with Framingham Union Hospital.
What medical group is Dr. Karen Lynn Sadler part of?
Dr. Sadler is linked to Massachusetts General Hospital. Dmand AI links Dr. Sadler to 2 more medical groups.
Does Dr. Karen Lynn Sadler accept Medicare?
Yes. CMS lists Dr. Sadler as accepting Medicare assignment.
Where did Dr. Karen Lynn Sadler go to medical school?
Dr. Sadler graduated from Harvard Medical School in 1988.
How long has Dr. Karen Lynn Sadler been practicing?
Dr. Sadler graduated from medical school in 1988, 38 years ago.
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