Karen E. Klein, M.D.
Pediatrics Physician · Boston, MA
Karen E. Klein, M.D. is a pediatrics physician with a practice address in Boston, Massachusetts, and NPI 1154309235, issued on Jan 9, 2006. Check the license (Massachusetts 45931, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Karen E. Klein
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 45931 MA
Self-reported in NPPES; status is on the state search - Practice location
- 165 Dartmouth St, Boston, MA 02116
- Phone
- (617) 859-5470
- Enumerated
- Jan 9, 2006
- Record last updated
- Oct 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (617) 859-5059
- Medicaid ID
- 0166464 MA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
Also registered at 165 Dartmouth St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michelle Chan, FNP-BCFamily Nurse Practitioner1952003386
- Sameer Chinoy, MDFamily Medicine Physician1770677767
Verify Karen E. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 45931Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $169.20
2 payments; by number, the most common kind was food and beverage; the largest payer was Ascendis Pharma Inc. The 21,580 providers of this specialty with any payment received $842.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Karen E. Klein among 2,628 pediatrics physician records in Massachusetts
Karen E. Klein, M.D. is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2020 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
822 pediatrics physician records list a practice address in Boston
They are 822 of the 41,865 NPPES records with a practice address in Boston, and 2,628 pediatrics physician records in Massachusetts.
All 2,628 in Massachusetts → Every provider in Boston → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Linda Cohen, M.D.Boston, MA 021161144207887
- Jonathan Finkelstein, M.D.Boston, MA 021161366420143
- Heather Kempczinski, MDBoston, MA 021161346871381
- Richard Marshall, M.D.Boston, MA 021161770562324
- Gareth Marshall, MDBoston, MA 021161487159851
- Lynn Porter, MDBoston, MA 021161518184456
- Brenda PringBoston, MA 021161508183351
- Barbara Rathmell, M.D.Boston, MA 021161922447663
Common questions
What is Karen E. Klein, M.D.'s NPI number?
Karen E. Klein, M.D.'s National Provider Identifier (NPI) is 1154309235, issued on Jan 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen E. Klein, M.D. located?
The NPPES record lists a practice address at 165 Dartmouth St, Boston, MA, 02116. Phone: (617) 859-5470. Providers update this record themselves, so call before visiting.
How can I verify Karen E. Klein, M.D.'s license?
NPPES lists Massachusetts license number 45931, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.