SHERIN ANN CHAKKALAKEL DNP, FNP-C
NPI 1104390053
Nurse Practitioner - Primary Care in Petaluma, CA
About Sherin Ann Chakkalakel Dnp, Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHERIN ANN CHAKKALAKEL DNP, FNP-C (NPI 1104390053) is an individual primary care provider in Petaluma, California, licensed in California (NP95010634) and active in the NPI registry since January 2019. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (2017).
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 and accepts Medicare assignment
Sherin Ann Chakkalakel Dnp, Fnp-c 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 Reassignment
Medicare enrollment records show Sherin Chakkalakel reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Riverside, CA 92501
- Reassigned Medicare billing, California enrollment
- 82 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94954 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PETALUMA, CA 94954
PETALUMA, CA 94954
PETALUMA, CA 94954
PETALUMA, CA 94954
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 Sherin Chakkalakel's NPI number?
The NPI number for Sherin Chakkalakel is 1104390053. It was assigned to this individual provider in the NPPES registry on January 14, 2019.
Where is Sherin Chakkalakel located?
Sherin Chakkalakel practices at 141 Lynch Creek Way, Petaluma, CA 94954. The listed phone number is (707) 763-0802.
What is Sherin Chakkalakel's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Sherin Chakkalakel enrolled in Medicare?
Yes. Sherin Chakkalakel 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 organization bills Medicare for Sherin Chakkalakel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sherin Chakkalakel reassigns Medicare benefits to Nightingale Clinical Care, PC (Riverside, 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 Sherin Chakkalakel'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 Sherin Chakkalakel was last updated on October 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Sherin Ann Chakkalakel, DNP, FNP-C · NPI 1104390053
Primary Care physician in Petaluma, California. Individual provider, active in the CMS NPPES registry since January 14, 2019.
## Identity
- **NPI:** 1104390053 (Entity type: Individual)
- **Enumerated:** January 14, 2019
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** NP95010634 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 141 LYNCH CREEK WAY, Petaluma, CA 94954-2341
- **Phone:** (707) 763-0802
## 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:** Nightingale Clinical Care, PC (NPI 1972159069, Riverside, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** October 20, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1104390053) · Data from the CMS NPPES public registry.