Lawrence I. Karlin, MD
Pediatric Orthopaedic Surgery Physician · Boston, MA
Lawrence I. Karlin, MD is a pediatric orthopaedic surgery physician with a practice address in Boston, Massachusetts, and NPI 1235186263, issued on May 27, 2006. Check the license (Massachusetts 37934, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lawrence I. Karlin
- Credential
- MD
- Primary taxonomy
- Pediatric Orthopaedic Surgery Physician 207XP3100X
- License number
- 37934 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave, Boston, MA 02115
- Phone
- (617) 355-6021
- Enumerated
- May 27, 2006
- Record last updated
- Oct 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (617) 730-0456
- Medicaid ID
- 2073366 MA
- Medicare enrollment
- Enrolled (PECOS I20050829000426); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1971
- Entity
- Type 1 · individual
Also registered at 300 Longwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sylvia Abadir, MDPediatric Cardiology Physician1427366459
- Isabel Abbott, MDNeurology with Special Qualifications in Child Neurology Physician1033772579
- Kristin Abdelnour, PTPhysical Therapist1982821302
- Mohamed Abdelrahman, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1558050591
- Nadia Abdulrazak, N.P.Adult Health Nurse Practitioner1952616682
- Dhatri AbeyaratneStudent in an Organized Health Care Education/Training Program1437098233
Verify Lawrence I. Karlin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 37934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Children's Orthopaedic Surgery Foundation IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Pediatric Orthopaedic Surgery Physician providers in Massachusetts
There are 24 pediatric orthopaedic surgery physician records in Massachusetts.
Other pediatric orthopaedic surgery physician records in Massachusetts
- Donald Bae, MDBoston, MA1831154111
- Craig Birch, M.D.Boston, MA1104263565
- John Cahoy, M.D./PH.D.Concord, MA1952626350
- Christopher Defrancesco, MDBoston, MA1215431911
- John Deweese, M.D.Springfield, MA1649319682
- Rany El-Hawary, MDBoston, MA1316785496
- Grant Hogue, MDBoston, MA1619107349
- Mathilde Hupin DebeurmeBoston, MA1992134662
- Jeansol Kang, MDBoston, MA1649731811
- Mohan Karisankappa Puttaswamy, MBBSQuincy, MA1306116686
Common questions
What is Lawrence I. Karlin, MD's NPI number?
Lawrence I. Karlin, MD's National Provider Identifier (NPI) is 1235186263, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence I. Karlin, MD located?
The NPPES record lists a practice address at 300 Longwood Ave, Boston, MA, 02115. Phone: (617) 355-6021. Providers update this record themselves, so call before visiting.
How can I verify Lawrence I. Karlin, MD's license?
NPPES lists Massachusetts license number 37934, 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.