CYNTHIA CHALK
NPI 1124606900
Hospitalist in San Francisco, CA
About Cynthia Chalk NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CYNTHIA CHALK (NPI 1124606900) is an individual hospitalist provider in San Francisco, California, licensed in California (A193871) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Cynthia Chalk is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Cynthia Chalk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 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 94115 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.
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
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 Cynthia Chalk's NPI number?
The NPI number for Cynthia Chalk is 1124606900. It was assigned to this individual provider in the NPPES registry on March 31, 2021. The provider is also known as Cynthia Davila MD.
Where is Cynthia Chalk located?
Cynthia Chalk practices at 2425 Geary Blvd, San Francisco, CA 94115. The listed phone number is (415) 833-2000.
What is Cynthia Chalk's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Cynthia Chalk enrolled in Medicare?
Yes. Cynthia Chalk is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Cynthia Chalk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Chalk reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, CA). The 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 Cynthia Chalk'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 Cynthia Chalk was last updated on January 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Cynthia Chalk · NPI 1124606900
Hospitalist physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since March 31, 2021.
## Identity
- **NPI:** 1124606900 (Entity type: Individual)
- **Enumerated:** March 31, 2021
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A193871 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2425 GEARY BLVD, San Francisco, CA 94115-3358
- **Phone:** (415) 833-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1124606900) · Data from the CMS NPPES public registry.