Rebecca E. Kowaloff, DO
Hospice and Palliative Medicine (Internal Medicine) Physician · Worcester, MA
Rebecca E. Kowaloff, DO is a hospice and palliative medicine (internal medicine) physician with a practice address in Worcester, Massachusetts, and NPI 1366738890, issued on Jun 23, 2011. Check the license (Massachusetts 277684, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Rebecca E. Kowaloff
- Credential
- DO
- Primary taxonomy
- Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X
- License number
- 277684 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 334-4830
- Enumerated
- Jun 23, 2011
- Record last updated
- May 19, 2022
- Fax
- (774) 441-6710
- Medicare enrollment
- Enrolled (PECOS I20220614002816); accepts Medicare assignment
- Medical or professional school
- Touro Un Col Of Osteopathic Medicine, New York, 2011
- Entity
- Type 1 · individual
8 nearest hospice and palliative medicine (internal medicine) physician records → All 93 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPNurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasDermatology Physician1609028000
- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Rebecca E. Kowaloff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 277684Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hospice and palliative medicine (internal medicine) physician in 2024
21 Medicare Part D claims, against an average of 741 among the 1,607 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca E. Kowaloff among 93 hospice and palliative medicine (internal medicine) physician records in Massachusetts
Rebecca E. Kowaloff, DO is one of 93 hospice and palliative medicine (internal medicine) physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 54% of them.
- NPI issued2011 · 54% of these records are older, 39% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2011 · median 2010 among the 67 with a school on file
- Record last updated2022 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0002X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospice and Palliative Medicine (Internal Medicine) Physician providers in Massachusetts
There are 93 hospice and palliative medicine (internal medicine) physician records in Massachusetts.
All 93 in Massachusetts → Every provider in Worcester → Hospice and Palliative Medicine (Internal Medicine) Physician nationwide →
The 8 hospice and palliative medicine (internal medicine) physician records with the nearest ZIP codes
- Joel Bauman, M.D.Worcester, MA 016551477633600
- Isabel Castro, D.O.Worcester, MA 016551164699583
- Eva Chittenden, MDWorcester, MA 016551093772758
- Philip Hewes, M.D., M.P.H.Worcester, MA 016551780078329
- Marie King, M.D.Worcester, MA 016551447571104
- Charles Mills, MDWorcester, MA 016051831165190
- Vandana Nagpal, MDWorcester, MA 016051841226164
- Nancy Swayze, M.D.Worcester, MA 016051144298118
Common questions
What is Rebecca E. Kowaloff, DO's NPI number?
Rebecca E. Kowaloff, DO's National Provider Identifier (NPI) is 1366738890, issued on Jun 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca E. Kowaloff, DO located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 334-4830. Providers update this record themselves, so call before visiting.
How can I verify Rebecca E. Kowaloff, DO's license?
NPPES lists Massachusetts license number 277684, 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.
How much does Rebecca E. Kowaloff, DO prescribe under Medicare Part D?
In 2024, Rebecca E. Kowaloff, DO had 21 Medicare Part D claims; the average among hospice and palliative medicine (internal medicine) physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Rebecca E. Kowaloff, DO's MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.