DR. NANCY CAROLE SHOWEN M.D.
NPI 1104902287
Pediatrics in Oakland, CA
About Dr. Nancy Carole Showen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NANCY CAROLE SHOWEN M.D. (NPI 1104902287) is an individual pediatrics provider in Oakland, California, licensed in California (GO76759) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Nancy Carole Showen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Nancy Showen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 1,159 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94609 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.
OAKLAND, CA 94609
OAKLAND, CA 94609
OAKLAND, CA 94609
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 Nancy Showen's NPI number?
The NPI number for Nancy Showen is 1104902287. It was assigned to this individual provider in the NPPES registry on October 31, 2006.
Where is Nancy Showen located?
Nancy Showen practices at 747 52nd St, Oakland, CA 94609. The listed phone number is (510) 428-3000.
What is Nancy Showen's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Nancy Showen enrolled in Medicare?
Yes. Nancy Showen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nancy Showen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Showen reassigns Medicare benefits to 3 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Pediatrics Associates (San Francisco, CA). 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 Nancy Showen'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 Nancy Showen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Nancy Carole Showen, M.D. · NPI 1104902287
Pediatrics physician in Oakland, California. Individual provider, active in the CMS NPPES registry since October 31, 2006.
## Identity
- **NPI:** 1104902287 (Entity type: Individual)
- **Enumerated:** October 31, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** GO76759 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 747 52ND ST, Oakland, CA 94609-1809
- **Phone:** (510) 428-3000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1104902287) · Data from the CMS NPPES public registry.