Marla Onishi, MD — NPI 1528071883
Marla Onishi, MD’s National Provider Identifier is 1528071883. NPPES classifies this as a Type 1 individual record and reports a practice location in Cambridge, Massachusetts. The primary taxonomy is Family Medicine Physician.
Key facts
- NPI
- 1528071883
- Entity type
- Type 1 individual
- NPPES status
- Active in the August 10, 2026 snapshot
- Practice location
- 75 MOUNT AUBURN ST, HARVARD UNIVERSITY HEALTH SERVICES
Cambridge, Massachusetts 02138 - Practice telephone
- (617) 495-2001
- Primary taxonomy
- Family Medicine Physician
- Enumeration date
- August 15, 2006
- NPPES last update
- January 14, 2015
- Source
- CMS NPPES, NPPES Data Dissemination August 2026 V2
Questions answered by the NPPES record
What is the NPI for Marla Onishi, MD?
The NPI listed for Marla Onishi, MD in the NPPES snapshot is 1528071883. The number passes the NPI check-digit test and is recorded as active in that snapshot.
Is NPI 1528071883 an individual or organization record?
NPPES records NPI 1528071883 as an Entity Type 1 record, which CMS assigns to an individual health care provider.
Where is the reported practice location?
The primary practice location reported to NPPES is 75 MOUNT AUBURN ST, HARVARD UNIVERSITY HEALTH SERVICES, Cambridge, Massachusetts 02138.
What taxonomy codes are listed for this NPI?
One taxonomy code is listed: Family Medicine Physician (207Q00000X), the primary taxonomy. Names come from the NUCC Health Care Provider Taxonomy code set version 26.1; definitions are not reproduced.
When was the NPPES record last updated?
NPPES reports a last update date of January 14, 2015 and an enumeration date of August 15, 2006, as published in NPPES Data Dissemination August 2026 V2.
Source and data date
All facts on this page come from the Centers for Medicare & Medicaid Services (CMS) NPPES data dissemination file NPPES Data Dissemination August 2026 V2, released August 10, 2026 (snapshot date 2026-08-10). The record was reproduced from the main provider file without edits; only the fields listed on the methodology page are published.
CMS updates NPPES continuously and this page reflects a single monthly snapshot. Confirm current details in the official NPPES NPI Registry.
Directory pages
This profile is listed on the Cambridge, Massachusetts NPI directory and the Massachusetts NPI directory.
Other published profiles in Cambridge, MA
Up to ten other profiles this site publishes for Cambridge, listed alphabetically. Appearing together here indicates only a shared reported practice city, not any affiliation or relationship. The city page lists all 50 published profiles.
Independent service disclaimer
This directory is an independent, experimental publication of public NPPES fields. It is not affiliated with or endorsed by CMS, NPPES, Medicare, the American Medical Association, or the National Uniform Claim Committee. An NPI is an administrative identifier. Its presence here does not establish that a provider is licensed, credentialed, board certified, in good standing, accepting patients or insurance, employed by or affiliated with any organization, or currently practicing. Nothing on this page is medical, legal, or insurance advice.