Dr. Yaffa Klar, MD
- Hospital affiliations
- 1
- Industry payments
- $2,112
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2011
- Practice address
- 300 Longwood Avenue, Boston, MA 02115
- Practice phone
- Call (617) 735-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Klar'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. Yaffa Klar is a pediatric adolescent medicine physician in Boston, Massachusetts
Dr. Klar practices at Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital.
Dr. Klar's NPI, 1538453030, was assigned on June 2, 2011. Dr. Klar graduated from New York University Grossman School of Medicine in 1990. Dr. Klar holds New York license 188212.
- NPI
- 1538453030NPI Registry (opens in a new tab)
- NPI enumeration date
- June 2, 2011
- NPI status
- Active
- Practice phone
- (617) 735-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Yaffa Klar practices at Boston Children's Hospital in Boston, Massachusetts
Dr. Klar's primary practice is Boston Children's Hospital, at 300 Longwood Avenue, Boston, MA 02115 in Suffolk County. The practice phone is (617) 735-6000.
- Boston Children's Hospital300 Longwood Avenue, Boston, MA 02115 · Suffolk CountyPhone(617) 735-6000
Source: Dmand AI Affiliation Data
Dr. Yaffa Klar is affiliated with 4 sites of care and 2 medical groups
Dr. Klar's primary practice is Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital. The medical group on file is Boston Children's Health Physicians. Dmand AI also links Dr. Klar to 2 more group practices and clinics, 1 dialysis center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Yaffa Klar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Boston Children's Hospital | Available with a free account |
| +3 more sites and 1 medical group | 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 The Children's Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Yaffa Klar is one of 89 pediatric adolescent medicine physicians in Massachusetts
Adolescent medicine is Dr. Klar's primary specialty in the NPI Registry, under taxonomy code 2080A0000X. Dr. Klar is licensed in New York.
Specialties and state licenses
- Pediatric adolescent medicine, New YorkPrimary
Pediatric adolescent medicine physicians near Dr. Klar
Counts of pediatric adolescent medicine physicians 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. Yaffa Klar's patients have a median age of 9
Across all payers, Dmand AI patient panel data puts Dr. Klar's median patient age at 9, with 60% women.
Dr. Klar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 9
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Yaffa Klar received $2,112 in industry payments from 2016 to 2025
CMS Open Payments shows 119 general payments to Dr. Klar from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 89% of the total. Pfizer Inc. paid the most, $671.
General payments to Dr. Klar by program year, 2016 to 2025
General payments to Dr. Klar by kind, 2016 to 2025
- Food and beverage$1,88389%
- Device or supply loans$1487%
- Education$804%
Companies that paid Dr. Klar 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. Yaffa Klar graduated from New York University Grossman School of Medicine
Dr. Klar graduated from New York University Grossman School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Yaffa Klar'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 |
| 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. Yaffa Klar
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. Yaffa Klar's NPI number?
Dr. Yaffa Klar's NPI number is 1538453030. It was assigned on June 2, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Yaffa Klar?
Dr. Yaffa Klar is a pediatric adolescent medicine physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Pediatric Adolescent Medicine Physician (taxonomy code 2080A0000X).
Where does Dr. Yaffa Klar practice?
Dr. Klar practices at 300 Longwood Avenue, Boston, MA 02115. Dr. Klar's primary practice is Boston Children's Hospital in Boston, Massachusetts, part of The Children's Hospital. Dmand AI also links Dr. Klar to 2 group practices and clinics, 1 dialysis center and 1 medical group.
What is Dr. Yaffa Klar's office phone number?
The practice phone on file for Dr. Klar is (617) 735-6000.
What is Dr. Yaffa Klar's medical license number?
Dr. Klar holds New York license 188212.
Which hospitals is Dr. Yaffa Klar affiliated with?
Dr. Klar practices at Boston Children's Hospital in Boston, Massachusetts.
What medical group is Dr. Yaffa Klar part of?
Dr. Klar is linked to Boston Children's Health Physicians. Dmand AI links Dr. Klar to 1 more medical group.
Where did Dr. Yaffa Klar go to medical school?
Dr. Klar graduated from New York University Grossman School of Medicine in 1990.
Has Dr. Yaffa Klar received payments from drug or device companies?
CMS Open Payments shows $2,112 in general payments to Dr. Klar from 22 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Yaffa Klar been practicing?
Dr. Klar graduated from medical school in 1990, 36 years ago.
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