DR. DANIEL B SPENCER M.D.
NPI 1164650321
Psychiatry & Neurology - Child & Adolescent Psychiatry in Ridgefield, CT
About Dr. Daniel B Spencer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DANIEL B SPENCER M.D. (NPI 1164650321) is an individual child & adolescent psychiatry provider in Ridgefield, Connecticut, licensed in Connecticut (079108) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Daniel B Spencer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Daniel Spencer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenwich, CT 06830
- Reassigned Medicare billing, Connecticut enrollment
- 268 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 601 clinicians in this Medicare group
Mansfield Center, CT 06250
- Reassigned Medicare billing, Connecticut enrollment
- 200 clinicians in this Medicare group
Norfolk, VA 23507
- Reassigned Medicare billing, Virginia enrollment
- 549 clinicians in this Medicare group
Duluth, MN 55804
- Reassigned Medicare billing, Minnesota enrollment
- 1,460 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.
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 Daniel Spencer's NPI number?
The NPI number for Daniel Spencer is 1164650321. It was assigned to this individual provider in the NPPES registry on June 26, 2009.
Where is Daniel Spencer located?
Daniel Spencer practices at 133 Holmes Rd, Ridgefield, CT 06877. The listed phone number is (475) 289-6939.
What is Daniel Spencer's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Daniel Spencer enrolled in Medicare?
Yes. Daniel Spencer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Daniel Spencer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Daniel Spencer reassigns Medicare benefits to 5 organizations: Greenwich Hospital (Greenwich, CT), Connecticut Children's Specialty Group, Inc. (Hartford, CT), Natchaug Hospital, Inc. (Mansfield Center, CT), Childrens Specialty Group PLLC (Norfolk, VA) and The Duluth Clinic, Ltd (Duluth, MN). 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 Daniel 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 Daniel Spencer was last updated on June 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Dr. Daniel B Spencer, M.D. · NPI 1164650321
Child & Adolescent Psychiatry physician in Ridgefield, Connecticut. Individual provider, active in the CMS NPPES registry since June 26, 2009.
## Identity
- **NPI:** 1164650321 (Entity type: Individual)
- **Enumerated:** June 26, 2009
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 079108 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 133 HOLMES RD, Ridgefield, CT 06877-4304
- **Phone:** (475) 289-6939
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Greenwich Hospital (NPI 1609846088, Greenwich, CT); Connecticut Children's Specialty Group, Inc. (NPI 1669448882, Hartford, CT); Natchaug Hospital, Inc. (NPI 1295811321, Mansfield Center, CT); Childrens Specialty Group PLLC (NPI 1255354130, Norfolk, VA); The Duluth Clinic, Ltd (NPI 1245278936, Duluth, MN) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1164650321) · Data from the CMS NPPES public registry.