April Fitzsimmons Eichler, MD, MPH
Neurology Physician · Boston, MA
April Fitzsimmons Eichler, MD, MPH is a neurology physician with a practice address in Boston, Massachusetts, and NPI 1437124583, issued on Feb 22, 2006. Check the license (Massachusetts 220588, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- April Fitzsimmons Eichler
- Credential
- MD, MPH
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 220588 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit Street Yaw 9E, Boston, MA 02114
- Phone
- (617) 726-2066
- Enumerated
- Feb 22, 2006
- Record last updated
- Mar 5, 2026
- Fax
- (617) 724-8769
- Medicaid ID
- 2117673 MA
- Medicare enrollment
- Enrolled (PECOS I20060710000265); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 964 in Massachusetts → Look up another NPI →
Verify April Fitzsimmons Eichler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 220588Check 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
- 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).
April Fitzsimmons Eichler among 964 neurology physician records in Massachusetts
April Fitzsimmons Eichler, MD, MPH 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 57% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2001 · median 2006 among the 612 with a school on file
- Record last updated2026 · 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 April Fitzsimmons Eichler, MD, MPH's NPI number?
April Fitzsimmons Eichler, MD, MPH's National Provider Identifier (NPI) is 1437124583, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is April Fitzsimmons Eichler, MD, MPH located?
The NPPES record lists a practice address at 55 Fruit Street Yaw 9E, Boston, MA, 02114. Phone: (617) 726-2066. Providers update this record themselves, so call before visiting.
How can I verify April Fitzsimmons Eichler, MD, MPH's license?
NPPES lists Massachusetts license number 220588, 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.