Doctor profile · Federal record

Dr. Cassandra Peitzman

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

  • NPI 1558823781
  • Accepts Medicare
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Fruit St
Boston, MA 021142621
(617) 724-4184
Mailing address
576 Mather Mail Ctr
Cambridge, MA 021387571

Credentials & registration

NPPES · NUCC
NPI registered
April 2019 — 7 yrs on file
Profile last updated
December 21, 2023
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Massachusetts #1015261

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1558823781. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
172
Distinct HCPCS
5
Medicare allowed
$28,620
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 89 89 $183
99284 Emergency department visit with moderate level of medical decision making 25 25 $126
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 22 22 $184
99291 Critical care, first 30-74 minutes 21 21 $225
93308 Ultrasound of heart, follow-up 15 15 $26

In context: peer comparison

Among 183 peers in Boston Emergency Medicine Physician, average services per provider: 65. This provider delivers 2.6× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Cassandra Peitzman's medical specialty?
Dr. Cassandra Peitzman practices Emergency Medicine Physician in Boston, MA.
Where does Dr. Cassandra Peitzman practice?
Dr. Cassandra Peitzman practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6177244184.
What is Dr. Cassandra Peitzman's NPI?
Dr. Cassandra Peitzman's National Provider Identifier (NPI) is 1558823781, issued by NPPES.
Does Dr. Cassandra Peitzman accept Medicare assignment?
Yes. Dr. Cassandra Peitzman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cassandra Peitzman commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.