Margaret Sagsveen, D.O.
NPI 1073054375 · Anesthesiology Physician · Bay Shore, NY
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Sagsveen, D.O. is a Anesthesiology Physician provider in Bay Shore, NY (NPI 1073054375).
Provider details
- NPI number
- 1073054375
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 310231-01 (NY)
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
9 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
35 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) |
|---|---|---|
| Anesthesia for Exam of Colon Using an Endoscope00812 | 19 | $138 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 16 | $52 |
Typical Medicare-allowed amounts for these services range $52–$138 (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
Additional practice locations (1)
- 111 E 210th StBronx, NY 10467-2401Phone: (718) 920-2802
Registry dates
- Enumerated
- 2017-03-20
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Margaret Sagsveen's NPI number?
- Margaret Sagsveen's National Provider Identifier (NPI) is 1073054375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Sagsveen's specialty?
- Margaret Sagsveen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Sagsveen located?
- Margaret Sagsveen's practice location on file with NPPES is 301 E Main St, Bay Shore, NY 11706-8408.
- What is Margaret Sagsveen's phone number?
- The practice phone number listed in the NPPES registry for Margaret Sagsveen is (631) 885-3885.
- Does Margaret Sagsveen accept Medicare?
- Margaret Sagsveen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Sagsveen's NPI active?
- Yes — Margaret Sagsveen's NPI (1073054375) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.