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ALEXANDER W. CHAN M.D.
NPI 1154600161
Anesthesiology in Worcester, MA

Active since August 08, 2011PECOS EnrolledAccepts Medicare Assignment
97.02/100
CMS Quality Rating
55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY, WORCESTER, MA 01655(508) 334-3271(508) 856-5911 Get Directions Write a Review

NPPES record last updated: November 19, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 19, 2020, Jan 24, 2017 (2 updates tracked since 2017).

About Alexander W. Chan M.d. NPPES

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

ALEXANDER W. CHAN M.D. (NPI 1154600161) is an individual anesthesiology provider in Worcester, Massachusetts, licensed in Massachusetts (265633) and active in the NPI registry since August 2011. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Health - Harrington Hospital, and is a graduate of New York University School Of Medicine (2011).

NPPES Registry Identity

NPI1154600161
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameALEXANDER W. CHANCredential: M.D.
Location Address55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGYWorcester, MA 01655-0002
Mailing AddressPo Box 415348Boston, MA 02241-5348
Phone(508) 334-3271
Fax(508) 856-5911
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 2011
Enumeration DateAugust 8, 2011
Last NPPES UpdateNovember 19, 20202 updates tracked since enumeration
NPPES CertifiedNovember 19, 2020
✔ NPI 1154600161 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MA · 265633
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
55 LAKE AVE N, Worcester, MA 01655
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Other Identifiers 1

Medicaid110114552AMA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.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

Alexander W. Chan 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 ID7911292719
PECOS Enrollment IDI20160817003288
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 Reassignments

2

Medicare enrollment records show Alexander Chan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Umass Memorial Medical Group Inc
Same address
Internal Medicine
55 LAKE AVE N
Worcester, MA 01655
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,902 clinicians in this Medicare group
NPI 1760445373 (508) 334-1000
Precision Anesthesia Associates PC
20 mi
Specialist
100 SOUTH ST
Southbridge, MA 01550
  • Reassigned Medicare billing, Massachusetts enrollment
  • 20 clinicians in this Medicare group
NPI 1841781820 (508) 434-0489

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 6

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.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
37 services37 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
37 services37 patients
Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
32 services31 patients
Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
27 services27 patients
Anesthesia for procedure on small and large bowel using an endoscope 00813
Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.
15 services15 patients
Anesthesia for other procedure on lower leg, ankle, and foot bones 01480
Anesthesia for procedures on lower leg, ankle, and foot bones involves administering medication to block pain and sensation in these areas. This allows doctors to perform necessary treatments or surgeries without causing discomfort. The type of anesthesia used can vary based on the specific procedure.
15 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Umass Memorial Health - Harrington Hospital

Acute Care Hospitals · Southbridge, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220019
Location100 South StreetSouthbridge, MA 01550 · Worcester County
Emergency services

Medicare 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.

97.02/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality78.09
Promoting Interoperability100
Improvement Activities40

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.

HILLARY R. IRONS MD
Emergency Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 421-1400
MS. SHERINE MARY HASSEY-HALLIGAN NP
Nurse Practitioner
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-8585
MS. EILEEN A. DUHAMEL NP
Nurse Practitioner
55 LAKE AVE N, DEPARTMENT OF RADIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-2710
EWA HRYNISZYN CRNA
Nurse Anesthetist, Certified Registered
55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-3271
HELEN COPSEY PA-C
Physician Assistant
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-8585
DR. ADEPEJU GBADEBO CHAMPION M.D.
Internal Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-2731
SOWMYA KORAPATI
Internal Medicine (Hematology & Oncology)
55 LAKE AVE N
WORCESTER, MA 01655
Worcester County (508) 334-3550
LAYLA FAKHRZADEH M.D.
Anesthesiology
55 LAKE AVE N, ANESTHESIOLOGY
WORCESTER, MA 01655
Worcester County (508) 334-3271

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 Alexander Chan's NPI number?

The NPI number for Alexander Chan is 1154600161. It was assigned to this individual provider in the NPPES registry on August 8, 2011.

Where is Alexander Chan located?

Alexander Chan practices at 55 Lake Ave N Department Of Anesthesiology, Worcester, MA 01655. The listed phone number is (508) 334-3271.

What is Alexander Chan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Alexander Chan enrolled in Medicare?

Yes. Alexander Chan 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 Alexander Chan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Chan reassigns Medicare benefits to 2 organizations: Umass Memorial Medical Group Inc (Worcester, MA) and Precision Anesthesia Associates PC (Southbridge, MA). 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 Alexander Chan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexander Chan accept?

Health plans from Taro Health list Alexander Chan 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 Alexander Chan affiliated with any hospitals?

According to CMS data, Alexander Chan is affiliated with Umass Memorial Health - Harrington Hospital.

When was this NPI record last updated?

The NPPES record for Alexander Chan was last updated on November 19, 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.