Doctor profile · Federal record

Dr. Zachary Oliff, DO

Emergency Medicine Physician (CMS: Emergency Medicine) · Student in an Organized Health Care Education/Training Program · Cambridge, MA

  • NPI 1003300492
  • Accepts Medicare
  • 8 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1493 Cambridge St
Cambridge, MA 021391099
(617) 665-1000

Credentials & registration

NPPES · NUCC
NPI registered
June 2018 — 8 yrs on file
Profile last updated
July 10, 2023
Year of graduation
2018 — 8 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Massachusetts #1015559

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1003300492. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
122
Distinct HCPCS
3
Medicare allowed
$20,331
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 55 53 $126
99285 Emergency department visit with high level of medical decision making 40 40 $183
99291 Critical care, first 30-74 minutes 27 27 $225

In context: peer comparison

Among 18 peers in Cambridge Emergency Medicine Physician, average services per provider: 67. This provider delivers 1.8× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Zachary Oliff's medical specialty?
Dr. Zachary Oliff practices Emergency Medicine Physician in Cambridge, MA.
Where does Dr. Zachary Oliff practice?
Dr. Zachary Oliff practices at 1493 Cambridge St, Cambridge, MA 021391099. Office phone: 6176651000.
What is Dr. Zachary Oliff's NPI?
Dr. Zachary Oliff's National Provider Identifier (NPI) is 1003300492, issued by NPPES.
Does Dr. Zachary Oliff accept Medicare assignment?
Yes. Dr. Zachary Oliff accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zachary Oliff commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.