Erica Siwila-Sackman, MD
NPI 1033613005 · Psychiatry Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erica Siwila-Sackman, MD is a Psychiatry Physician provider in Worcester, MA (NPI 1033613005).
Provider details
- NPI number
- 1033613005
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 295120 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
65 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 65 | $51 |
Typical Medicare-allowed amounts for these services range $51–$51 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 127 | 18 |
| Quetiapine Fumarate | 110 | 19 |
| Trazodone Hcl | 96 | 25 |
| Bupropion Hclbrand: Bupropion Xl | 96 | 19 |
| Gabapentin | 88 | 11 |
| Mirtazapine | 85 | 19 |
| Lorazepam |
Practice location
Mailing address
Additional practice locations (1)
- 330 Mount Auburn StCambridge, MA 02138-5502Phone: (617) 499-5054Fax: (617) 499-5465
Registry dates
- Enumerated
- 2018-03-22
- Last updated
- 2025-01-27
- Certified
- 2025-01-27
Frequently asked questions
- What is Erica Siwila-Sackman's NPI number?
- Erica Siwila-Sackman's National Provider Identifier (NPI) is 1033613005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erica Siwila-Sackman's specialty?
- Erica Siwila-Sackman is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Erica Siwila-Sackman located?
- Erica Siwila-Sackman's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Erica Siwila-Sackman's phone number?
- The practice phone number listed in the NPPES registry for Erica Siwila-Sackman is (508) 334-3562.
- Does Erica Siwila-Sackman accept Medicare?
- Erica Siwila-Sackman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erica Siwila-Sackman's NPI active?
- Yes — Erica Siwila-Sackman's NPI (1033613005) is active in the NPPES registry as of the last update on 2025-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.