Melisa Ruiz-Gutierrez, M.D, PH.D.
Pediatric Hematology & Oncology Physician · Boston, MA
Melisa Ruiz-Gutierrez, M.D, PH.D. is a pediatric hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1730321779, issued on Apr 6, 2009. Check the license (Massachusetts 265508, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Melisa Ruiz-Gutierrez
- Credential
- M.D, PH.D.
- Primary taxonomy
- Pediatric Hematology & Oncology Physician 2080P0207X
- License number
- 265508 MA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Longwood Ave, Boston, MA 02115
- Phone
- (617) 919-2009
- Enumerated
- Apr 6, 2009
- Record last updated
- Jul 21, 2022
- Fax
- (617) 730-0934
- Medicare enrollment
- Enrolled (PECOS I20160701000542); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2009
- Entity
- Type 1 · individual
8 nearest pediatric hematology & oncology physician records → All 197 in Massachusetts → Look up another NPI →
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 Melisa Ruiz-Gutierrez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 265508Check 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: $55.14
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 1,215 providers of this specialty with any payment received $7,404.07 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.
Bills Medicare through one group practice
- Children's Hospital Pediatric Associates, IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melisa Ruiz-Gutierrez among 197 pediatric hematology & oncology physician records in Massachusetts
Melisa Ruiz-Gutierrez, M.D, PH.D. is one of 197 pediatric hematology & oncology physician records with a practice address in Massachusetts. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 56% of them.
- NPI issued2009 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 42% of these records are
- In the CMS Doctors and Clinicians fileYes · 28% of these records are
- Graduated2009 · median 2007 among the 55 with a school on file
- Record last updated2022 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Hematology & Oncology Physician providers in Massachusetts
There are 197 pediatric hematology & oncology physician records in Massachusetts.
All 197 in Massachusetts → Every provider in Boston → Pediatric Hematology & Oncology Physician nationwide →
The 8 pediatric hematology & oncology physician records with the nearest ZIP codes
- Elly Barry, MDBoston, MA 021151740257427
- Susan Chi, MDBoston, MA 021151154398964
- Alan Dandrea, MDBoston, MA 021151174599930
- Kimberly Davies, MDBoston, MA 021151487621199
- Holcombe Grier, MDBoston, MA 021151295702793
- Andrew Kung, MD PHDBoston, MA 021151720053580
- Jennifer Mack, MD MPHBoston, MA 021151225006398
- Alan Michelson, M.D.Boston, MA 021151760464994
Common questions
What is Melisa Ruiz-Gutierrez, M.D, PH.D.'s NPI number?
Melisa Ruiz-Gutierrez, M.D, PH.D.'s National Provider Identifier (NPI) is 1730321779, issued on Apr 6, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Melisa Ruiz-Gutierrez, M.D, PH.D. located?
The NPPES record lists a practice address at 300 Longwood Ave, Boston, MA, 02115. Phone: (617) 919-2009. Providers update this record themselves, so call before visiting.
How can I verify Melisa Ruiz-Gutierrez, M.D, PH.D.'s license?
NPPES lists Massachusetts license number 265508, 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.