HAROLD S. SIMPSON CRNA
NPI 1689601080
Nurse Anesthetist, Certified Registered in Westwood, MA
About Harold S. Simpson Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAROLD S. SIMPSON CRNA (NPI 1689601080) is an individual nurse anesthetist, certified registered in Westwood, Massachusetts, licensed in Massachusetts (RN257764) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and maintains a secondary practice location in Worcester.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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 (PECOS)
Harold S. Simpson Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Harold Simpson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
Van Wert, OH 45891
- Reassigned Medicare billing, Vermont enrollment
- 17 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 2
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 2
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, MANorthwestern Medical Center Inc
Acute Care Hospitals · Saint Albans, VTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02090 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTWOOD, MA 02090
WESTWOOD, MA 02090
WESTWOOD, MA 02090
WESTWOOD, MA 02090
WESTWOOD, MA 02090
WESTWOOD, MA 02090
WESTWOOD, MA 02090
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 Harold Simpson's NPI number?
The NPI number for Harold Simpson is 1689601080. It was assigned to this individual provider in the NPPES registry on June 28, 2006.
Where is Harold Simpson located?
Harold Simpson practices at 690 Canton Street Suite 325, Westwood, MA 02090. The listed phone number is (781) 407-7713.
What is Harold Simpson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Harold Simpson enrolled in Medicare?
Yes. Harold Simpson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Harold Simpson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Harold Simpson reassigns Medicare benefits to 2 organizations: Umass Memorial Medical Group Inc (Worcester, MA) and Clinical Colleagues LLC (Van Wert, OH). 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 Harold Simpson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Harold Simpson accept?
Health plans from Anthem Blue Cross and Blue Shield list Harold Simpson 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 Harold Simpson affiliated with any hospitals?
According to CMS data, Harold Simpson is affiliated with Umass Memorial Medical Center/University Campus and Northwestern Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Harold Simpson was last updated on December 9, 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.
# Harold S. Simpson, CRNA · NPI 1689601080
Nurse Anesthetist, Certified Registered physician in Westwood, Massachusetts. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1689601080 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** RN257764 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 690 CANTON STREET, SUITE 325, Westwood, MA 02090-2329
- **Phone:** (781) 407-7713 · **Fax:** (781) 407-0998
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA); Clinical Colleagues LLC (NPI 1992725766, Van Wert, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** December 9, 2020
- **Other identifiers:** Medicaid 110106930A (MA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1689601080) · Data from the CMS NPPES public registry.