REFENG YAO M.D.
NPI 1609945765
Anesthesiology in Brighton, MA
About Refeng Yao M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REFENG YAO M.D. (NPI 1609945765) is an individual anesthesiology provider in Brighton, Massachusetts, licensed in Massachusetts (230483) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Refeng Yao 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.
Medicare Billing Reassignments
2Medicare enrollment records show Refeng Yao reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Baltimore, MD 21218
- Reassigned Medicare billing, District of Columbia enrollment
- 482 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.
Areas of Expertise CMS Part B claims 10
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
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 Refeng Yao's NPI number?
The NPI number for Refeng Yao is 1609945765. It was assigned to this individual provider in the NPPES registry on November 6, 2006.
Where is Refeng Yao located?
Refeng Yao practices at Caritas St. Elizabeth 's Hospital 736 Cambridge Street, Brighton, MA 01235. The listed phone number is (617) 789-3000.
What is Refeng Yao's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Refeng Yao enrolled in Medicare?
Yes. Refeng Yao 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 organizations bill Medicare for Refeng Yao's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Refeng Yao reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Baltimore, MD) and Medstar Medical Group Anesthesiology LLC (Baltimore, MD). Each 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 Refeng Yao'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 Refeng Yao was last updated on November 5, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.
# Refeng Yao, M.D. · NPI 1609945765
Anesthesiology physician in Brighton, Massachusetts. Individual provider, active in the CMS NPPES registry since November 6, 2006.
## Identity
- **NPI:** 1609945765 (Entity type: Individual)
- **Enumerated:** November 6, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 230483 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** CARITAS ST. ELIZABETH 'S HOSPITAL, 736 CAMBRIDGE STREET, Brighton, MA 01235
- **Phone:** (617) 789-3000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Medstar Medical Group Anesthesiology LLC (NPI 1528578333, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** November 5, 2007
- **Other identifiers:** Medicaid 2134616 (MA); Medicare PIN 000094801 (MA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1609945765) · Data from the CMS NPPES public registry.