MARGARET YOON DO
NPI 1104445295
Psychiatry & Neurology - Psychiatry in Melville, NY
About Margaret Yoon Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET YOON DO (NPI 1104445295) is an individual psychiatry provider in Melville, New York, licensed in New York (330173) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Margaret Yoon Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Margaret Yoon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carmel, NY 10512
- Reassigned Medicare billing, New York enrollment
- 296 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11747 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MELVILLE, NY 11747
MELVILLE, NY 11747
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Yoon's NPI number?
The NPI number for Margaret Yoon is 1104445295. It was assigned to this individual provider in the NPPES registry on April 9, 2020.
Where is Margaret Yoon located?
Margaret Yoon practices at 275 Broadhollow Rd Ste 120, Melville, NY 11747. The listed phone number is (845) 279-5908.
What is Margaret Yoon's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Margaret Yoon enrolled in Medicare?
Yes. Margaret Yoon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Margaret Yoon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Yoon reassigns Medicare benefits to Carmel Psychological Health, PC (Carmel, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Yoon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Yoon accept?
Health plans from Cigna Healthcare list Margaret Yoon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Margaret Yoon was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret Yoon, DO · NPI 1104445295
Psychiatry physician in Melville, New York. Individual provider, active in the CMS NPPES registry since April 9, 2020.
## Identity
- **NPI:** 1104445295 (Entity type: Individual)
- **Enumerated:** April 9, 2020
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 330173 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 275 BROADHOLLOW RD STE 120, Melville, NY 11747-4863
- **Phone:** (845) 279-5908
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Carmel Psychological Health, PC (NPI 1720194335, Carmel, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** July 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104445295) · Data from the CMS NPPES public registry.