SHANNON L GRIFFIN CRNA
NPI 1447459573
Nurse Anesthetist, Certified Registered in Westwood, MA
About Shannon L Griffin Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHANNON L GRIFFIN CRNA (NPI 1447459573) is an individual nurse anesthetist, certified registered in Westwood, Massachusetts, licensed in Massachusetts (250737) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Mount Auburn Hospital, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
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
Shannon L Griffin Crna 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
4Medicare enrollment records show Shannon Griffin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milton, MA 02186
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1861216038 (Massachusetts)
- 556 clinicians in this Medicare group
Lowell, MA 01851
- Reassigned Medicare billing, Massachusetts enrollment
- Medicare enrollment name: Integrated Gastroenterology Consultants, P.C.
- 70 clinicians in this Medicare group
Lowell, MA 01854
- Reassigned Medicare billing, Massachusetts enrollment
- 123 clinicians in this Medicare group
Gardner, MA 01440
- Reassigned Medicare billing, Massachusetts enrollment
- 344 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Auburn Hospital
Acute Care Hospitals · Cambridge, MALowell General Hospital
Acute Care Hospitals · Lowell, MAHeywood Hospital
Acute Care Hospitals · Gardner, MAPhysician 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.
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.
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 Shannon Griffin's NPI number?
The NPI number for Shannon Griffin is 1447459573. It was assigned to this individual provider in the NPPES registry on July 18, 2007.
Where is Shannon Griffin located?
Shannon Griffin practices at 690 Canton St Suite 325, Westwood, MA 02090. The listed phone number is (781) 407-7713.
What is Shannon Griffin's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Shannon Griffin enrolled in Medicare?
Yes. Shannon Griffin 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 Shannon Griffin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Griffin reassigns Medicare benefits to 4 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Milton, MA), Integrated Gastroenterology Consultants, PC (Lowell, MA), Lowell Anesthesiology Service, Inc. (Lowell, MA) and Henry Heywood Memorial Hospital (Gardner, 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 Shannon Griffin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Shannon Griffin accept?
Health plans from WellSense Health Plan list Shannon Griffin 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 Shannon Griffin affiliated with any hospitals?
According to CMS data, Shannon Griffin is affiliated with Mount Auburn Hospital, Lowell General Hospital and Heywood Hospital.
When was this NPI record last updated?
The NPPES record for Shannon Griffin was last updated on July 29, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Shannon L Griffin, CRNA · NPI 1447459573
Nurse Anesthetist, Certified Registered physician in Westwood, Massachusetts. Individual provider, active in the CMS NPPES registry since July 18, 2007.
## Identity
- **NPI:** 1447459573 (Entity type: Individual)
- **Enumerated:** July 18, 2007
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 250737 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 690 CANTON ST, SUITE 325, Westwood, MA 02090-2321
- **Phone:** (781) 407-7713 · **Fax:** (781) 407-0998
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1245773308, Milton, MA); Integrated Gastroenterology Consultants, PC (NPI 1477553287, Lowell, MA); Lowell Anesthesiology Service, Inc. (NPI 1114927282, Lowell, MA); Henry Heywood Memorial Hospital (NPI 1205448701, Gardner, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** July 29, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1447459573) · Data from the CMS NPPES public registry.