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ELLEN YIN M.D.
NPI 1649911868
Psychiatry & Neurology - Psychiatry in Westminster, MD

Active since April 03, 2022PECOS EnrolledAccepts Medicare Assignment
66 E MAIN ST, WESTMINSTER, MD 21157(833) 351-8255 Get Directions Write a Review

NPPES record last updated: July 20, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ellen Yin M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ELLEN YIN M.D. (NPI 1649911868) is an individual psychiatry provider in Westminster, Maryland, licensed in Maryland (D0107329) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of New York University School Of Medicine (2022).

NPPES Registry Identity

NPI1649911868
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameELLEN YINCredential: M.D.
Location Address66 E MAIN STWestminster, MD 21157-5008
Mailing Address66 E Main StWestminster, MD 21157-5008
Phone(833) 351-8255
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 2022
Enumeration DateApril 3, 2022
Last NPPES UpdateJuly 20, 2026
NPPES CertifiedJuly 20, 2026
✔ NPI 1649911868 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MD · D0107329
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
66 E MAIN ST, Westminster, MD 21157
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11500 K St NWWashington, DC 20005-1209 · Phone (833) 351-8255
Location 2150 Riverside PkwyFredericksburg, VA 22406-1094 · Phone (833) 351-8255
Location 3109 W 27th St Rm 5SNew York, NY 10001-6208 · Phone (833) 351-8255

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

Ellen Yin M.d. 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.

PECOS PAC ID7113484130
PECOS Enrollment IDI20260810004122
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Ellen Yin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mccd Fl Psychiatry Services PA
691 mi
Psychiatry
1301 RIVERPLACE BLVD STE 800
Jacksonville, FL 32207
  • Reassigned Medicare billing, Maryland enrollment
  • 29 clinicians in this Medicare group
NPI 1659003457 (833) 351-8255

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 21157 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$183.44 typical visit price
range $60.73 – $183.44
Typical copayment $45.86 (range $15.18 – $45.86)
Most-billed visit code 99205
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MICHELLE HORNBAKER-PARK M.D.
Psychiatry & Neurology (Psychiatry)
66 E MAIN ST, 2ND AND 3RD FLOOR (PRIVATE OFFICE 303)
WESTMINSTER, MD 21157
Carroll County (833) 351-8255
TAPROOT FAMILY WELLNESS
Counselor (Mental Health)
66 E MAIN ST
WESTMINSTER, MD 21157
Carroll County (240) 602-3854
SWETHA MUMMINI MD
Psychiatry & Neurology (Psychiatry)
66 E MAIN ST
WESTMINSTER, MD 21157
Carroll County (833) 351-8255
ANGELA A HIPSLEY CAC-AD
Counselor (Addiction (Substance Use Disorder))
66 E MAIN ST
WESTMINSTER, MD 21157
Carroll County (240) 800-1171
DR. CHRISTOPHER JOSEPH BERNETSKI MD
Psychiatry & Neurology (Psychiatry)
66 E MAIN ST
WESTMINSTER, MD 21157
Carroll County (833) 351-8255
ADELA STROESCU MCLAURIN M.D.
Psychiatry & Neurology (Psychiatry)
66 E MAIN ST
WESTMINSTER, MD 21157
Carroll County (833) 351-8255

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 Ellen Yin's NPI number?

The NPI number for Ellen Yin is 1649911868. It was assigned to this individual provider in the NPPES registry on April 3, 2022.

Where is Ellen Yin located?

Ellen Yin practices at 66 E Main St, Westminster, MD 21157. The listed phone number is (833) 351-8255.

What is Ellen Yin's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Ellen Yin enrolled in Medicare?

Yes. Ellen Yin 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 Ellen Yin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ellen Yin reassigns Medicare benefits to Mccd Fl Psychiatry Services PA (Jacksonville, FL). 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 Ellen Yin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ellen Yin was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.