THEOFILOS P. MATHEOS MD
NPI 1558414409
Anesthesiology in Worcester, MA
About Theofilos P. Matheos Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THEOFILOS P. MATHEOS MD (NPI 1558414409) is an individual anesthesiology provider in Worcester, Massachusetts, licensed in Massachusetts (238932) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and is a graduate of University Of Massachusetts Medical School (2005).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Theofilos P. Matheos Md 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 Theofilos Matheos reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 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 3
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Umass Memorial Medical Center/University Campus
Acute Care Hospitals · Worcester, MAMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WORCESTER, MA 01655
WORCESTER, MA 01655
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 Theofilos Matheos's NPI number?
The NPI number for Theofilos Matheos is 1558414409. It was assigned to this individual provider in the NPPES registry on January 22, 2007.
Where is Theofilos Matheos located?
Theofilos Matheos practices at 55 Lake Ave N Department Of Anesthesiology, Worcester, MA 01655. The listed phone number is (508) 334-3271.
What is Theofilos Matheos's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Theofilos Matheos enrolled in Medicare?
Yes. Theofilos Matheos 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 Theofilos Matheos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Theofilos Matheos reassigns Medicare benefits to Umass Memorial Medical Group Inc (Worcester, MA). 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 Theofilos Matheos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Theofilos Matheos accept?
Health plans from Taro Health list Theofilos Matheos 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.
Is Theofilos Matheos affiliated with any hospitals?
According to CMS data, Theofilos Matheos is affiliated with Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Theofilos Matheos was last updated on November 25, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Theofilos P. Matheos, MD · NPI 1558414409
Anesthesiology physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since January 22, 2007.
## Identity
- **NPI:** 1558414409 (Entity type: Individual)
- **Enumerated:** January 22, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 238932 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY, Worcester, MA 01655-0002
- **Phone:** (508) 334-3271 · **Fax:** (508) 856-5911
## 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:** Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Massachusetts Medical School, class of 2005
## Record status
- **NPPES last updated:** November 25, 2020
- **Other identifiers:** Medicaid 110083569A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1558414409) · Data from the CMS NPPES public registry.