CHRISTOPHER B SPENCER M.D.
NPI 1538143797
Anesthesiology in Guilford, CT
About Christopher B Spencer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER B SPENCER M.D. (NPI 1538143797) is an individual anesthesiology provider in Guilford, Connecticut, licensed in Connecticut (039597) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of State University Of New York Downstate Medical Center (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Christopher B Spencer 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
3Medicare enrollment records show Christopher Spencer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Guilford, CT 06437
- Reassigned Medicare billing, Connecticut enrollment
- 19 clinicians in this Medicare group
Guilford, CT 06437
- Reassigned Medicare billing, Connecticut enrollment
- 88 clinicians in this Medicare group
Fairfield, CT 06824
- Reassigned Medicare billing, Connecticut enrollment
- 41 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 4
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.
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.
Reported Quality Measures
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GUILFORD, CT 06437
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 Christopher Spencer's NPI number?
The NPI number for Christopher Spencer is 1538143797. It was assigned to this individual provider in the NPPES registry on December 1, 2005.
Where is Christopher Spencer located?
Christopher Spencer practices at 111 Goose Ln, Guilford, CT 06437. The listed phone number is (203) 453-7100.
What is Christopher Spencer's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Christopher Spencer enrolled in Medicare?
Yes. Christopher Spencer 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 Christopher Spencer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Spencer reassigns Medicare benefits to 3 organizations: New England Anesthesia Associates, LLC (Guilford, CT), Endoscopy Center Of Connecticut, LLC (Guilford, CT) and Greater Connecticut Anesthesia Associates, LLC (Fairfield, CT). 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 Christopher Spencer'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 Christopher Spencer was last updated on November 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Christopher B Spencer, M.D. · NPI 1538143797
Anesthesiology physician in Guilford, Connecticut. Individual provider, active in the CMS NPPES registry since December 1, 2005.
## Identity
- **NPI:** 1538143797 (Entity type: Individual)
- **Enumerated:** December 1, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 039597 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 GOOSE LN, Guilford, CT 06437-5101
- **Phone:** (203) 453-7100 · **Fax:** (215) 957-2875
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): New England Anesthesia Associates, LLC (NPI 1891388146, Guilford, CT); Endoscopy Center Of Connecticut, LLC (NPI 1326131418, Guilford, CT); Greater Connecticut Anesthesia Associates, LLC (NPI 1730837576, Fairfield, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 1993
## Record status
- **NPPES last updated:** November 2, 2015
- **Other identifiers:** Medicaid 001395971 (CT); Medicare PIN D400252975 (CT); Medicare UPIN H38581
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Source: [NPI Profile](https://npiprofile.com/npi/1538143797) · Data from the CMS NPPES public registry.