Catherine Isroff, MD
Neurology Physician · Boston, MA
Catherine Isroff, MD is a neurology physician with a practice address in Boston, Massachusetts, and NPI 1649737222, issued on Mar 1, 2019. Check the license (Massachusetts 1013708, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine Isroff
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 1013708 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St Ste 835, Boston, MA 02114
- Phone
- (617) 726-8639
- Enumerated
- Mar 1, 2019
- Record last updated
- Oct 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20231108000962); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 964 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St Ste 835
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pria AnandNeurology Physician1093135048
- Andrew Morin, RN, AMB-BCAmbulatory Care Registered Nurse1891574380
Verify Catherine Isroff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1013708Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average neurology physician in 2024
260 Medicare Part D claims for 70 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Carbidopa-Levodopa94 claims
- Donepezil Hcl38 claims
- Citalopram Hbr13 claims
- Carbidopa-Levodopa Er12 claims
- Propranolol Hcl12 claims
- Primidone11 claims
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.
Bills Medicare through 2 group practices
- Brigham And Womens Physicians Organization IncBoston, MA
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Isroff among 964 neurology physician records in Massachusetts
Catherine Isroff, MD is one of 964 neurology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 88% of them.
- NPI issued2019 · 88% of these records are older, 8% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2019 · median 2006 among the 612 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
524 neurology physician records list a practice address in Boston
They are 524 of the 41,865 NPPES records with a practice address in Boston, and 964 neurology physician records in Massachusetts.
All 964 in Massachusetts → Every provider in Boston → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Cenk Ayata, MDBoston, MA 021141326038043
- Thomas Byrne, MDBoston, MA 021141346230075
- David Caplan, MD PHDBoston, MA 021141780674945
- Alice Flaherty, MD PHDBoston, MA 021141396735601
- John Growdon, MDBoston, MA 021141407846686
- Michael Irizarry, MDBoston, MA 021141790775237
- James Lehrich, MDBoston, MA 021141205826518
- Robert Levine, MDBoston, MA 021141154318459
Common questions
What is Catherine Isroff, MD's NPI number?
Catherine Isroff, MD's National Provider Identifier (NPI) is 1649737222, issued on Mar 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Isroff, MD located?
The NPPES record lists a practice address at 55 Fruit St Ste 835, Boston, MA, 02114. Phone: (617) 726-8639. Providers update this record themselves, so call before visiting.
How can I verify Catherine Isroff, MD's license?
NPPES lists Massachusetts license number 1013708, 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 Catherine Isroff, MD prescribe under Medicare Part D?
In 2024, Catherine Isroff, MD had 260 Medicare Part D claims for 70 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
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.