Cassandra Peitzman
NPI 1558823781 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassandra Peitzman is a Emergency Medicine Physician provider in Boston, MA (NPI 1558823781).
Provider details
- NPI number
- 1558823781
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
197 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 104 | $178 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 34 | $123 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 28 | $180 |
| Critical Care, First 30-74 Minutes99291 | 19 | $219 |
| Ultrasound of Heart, Follow-Up93308 | 12 | $26 |
Typical Medicare-allowed amounts for these services range $26–$219 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-05
- Last updated
- 2023-12-21
- Certified
- 2023-12-21
Frequently asked questions
- What is Cassandra Peitzman's NPI number?
- Cassandra Peitzman's National Provider Identifier (NPI) is 1558823781, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassandra Peitzman's specialty?
- Cassandra Peitzman is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cassandra Peitzman located?
- Cassandra Peitzman's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Cassandra Peitzman's phone number?
- The practice phone number listed in the NPPES registry for Cassandra Peitzman is (617) 724-4184.
- Does Cassandra Peitzman accept Medicare?
- Cassandra Peitzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassandra Peitzman's NPI active?
- Yes — Cassandra Peitzman's NPI (1558823781) is active in the NPPES registry as of the last update on 2023-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.