Doctor profile · Federal record
Dr. Marla Onishi, MD
Family Medicine Physician (CMS: Internal Medicine) · Cambridge, MA
- NPI 1528071883
- Accepts Medicare
- 44 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
75 Mount Auburn St, Harvard University Health Services
Cambridge, MA 021384960
(617) 495-2001
fax (617) 496-0530
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- January 14, 2015
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Massachusetts #250144
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528071883. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
52
Distinct HCPCS
2
Medicare allowed
$3,807
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 35 | 34 | $100 | |
69209 |
Removal of impacted ear wax by washing | 17 | 15 | $19 |
In context: peer comparison
Among 9 peers in Cambridge Family Medicine Physician, average services per provider: 63. This provider delivers 0.8× the peer median.Frequently asked questions
What is Dr. Marla Onishi's medical specialty?
Dr. Marla Onishi practices Family Medicine Physician in Cambridge, MA.
Where does Dr. Marla Onishi practice?
Dr. Marla Onishi practices at 75 Mount Auburn St, Cambridge, MA 021384960. Office phone: 6174952001.
What is Dr. Marla Onishi's NPI?
Dr. Marla Onishi's National Provider Identifier (NPI) is 1528071883, issued by NPPES.
Does Dr. Marla Onishi accept Medicare assignment?
Yes. Dr. Marla Onishi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marla Onishi commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Removal of impacted ear wax by washing (HCPCS 69209). Source: CMS Medicare Physician & Other Practitioners file.