1. Home
  2. Directory
  3. California
  4. Oakland
  5. Nurse Anesthetist Certified Registered
  6. NPI Profile

CAYLEIGH WILLIAMSON CRNA
NPI 1144863440
Nurse Anesthetist, Certified Registered in Oakland, CA

Active since October 21, 2019Accepts Medicare Assignment
81.56/100
CMS Quality Rating
3600 BROADWAY, OAKLAND, CA 94611(510) 752-1000 Get Directions Write a Review

NPPES record last updated: January 3, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 3, 2022, Oct 21, 2019 (2 updates tracked since 2019).

About Cayleigh Williamson Crna NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CAYLEIGH WILLIAMSON CRNA (NPI 1144863440) is an individual nurse anesthetist, certified registered in Oakland, California, licensed in California (95001210) and active in the NPI registry since October 2019. She is a graduate of Other (2019).

NPPES Registry Identity

NPI1144863440
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameCAYLEIGH WILLIAMSONCredential: CRNA
Location Address3600 BROADWAYOakland, CA 94611-5730
Mailing Address2348 Greenwood RdPleasanton, CA 94566-4630 · (415) 312-7909
Phone(510) 752-1000
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateOctober 21, 2019
Last NPPES UpdateJanuary 3, 20222 updates tracked since enumeration
✔ NPI 1144863440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in CA · 95001210
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
3600 BROADWAY, Oakland, CA 94611
Open in Google Maps ↗

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

Cayleigh Williamson Crna 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.

PECOS PAC ID244650448
PECOS Enrollment IDI20201008001833

Medicare Billing Reassignments

6

Medicare enrollment records show Cayleigh Williamson reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc
9.6 mi
Internal Medicine
901 NEVIN
Richmond, CA 94801
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1235226531 (510) 307-1555
Cep America - Anesthesia, PC
13 mi
Anesthesiology
1601 YGNACIO VALLEY RD
Walnut Creek, CA 94598
  • Reassigned Medicare billing, California enrollment
  • 833 clinicians in this Medicare group
NPI 1790401438 (925) 939-3000
Sutter Valley Medical Foundation
30 mi
Multi-Specialty
2720 LOW CT
Fairfield, CA 94534
NPI 1184859894 (707) 428-2731
Green Anesthesia
30 mi
Nurse Anesthetist, Certified Registered
2700 LOW CT FL 2
Fairfield, CA 94534
  • Reassigned Medicare billing, California enrollment
  • 64 clinicians in this Medicare group
NPI 1457039331 (707) 432-2700
Anesthesia Services Of San Joaquin, P.C.
54 mi
Anesthesiology
500 W HOSPITAL RD
French Camp, CA 95231
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Anesthesia Services Of San Joaquin PC
  • 217 clinicians in this Medicare group
NPI 1366778227 (877) 580-3144
Valley Regional Anesthesia Associates Inc
153 mi
Anesthesiology
7341 N 1ST ST STE 106
Fresno, CA 93720
  • Reassigned Medicare billing, California enrollment
  • 293 clinicians in this Medicare group
NPI 1578272415 (559) 289-4574

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.

Anesthesia for procedure for total knee joint replacement 01402
Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.
18 services18 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

81.56/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70
Improvement Activities40

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.

OSAMA MOHAMED EL-SAYED MD, PHD
Internal Medicine
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000
TRAM KHUONG
Pharmacist
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-4200
CHRISTIAN F. SCHMUTZ MD
Psychiatry & Neurology (Psychiatry)
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000
CHRISTOPHER AARON HUDSON RT
Respiratory Therapist, Registered
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-8886
DR. TAYLOR RENEE JOHNSON MD, MPH
Orthopaedic Surgery (Pediatric Orthopaedic Surgery)
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000
ADAM BUIE
Pharmacist
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000
DR. JUSTIN B FONG MD
Student in an Organized Health Care Education/Training Program
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000
JASMINE THAI LU MD
Student in an Organized Health Care Education/Training Program
3600 BROADWAY
OAKLAND, CA 94611
Alameda County (510) 752-1000

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 Cayleigh Williamson's NPI number?

The NPI number for Cayleigh Williamson is 1144863440. It was assigned to this individual provider in the NPPES registry on October 21, 2019.

Where is Cayleigh Williamson located?

Cayleigh Williamson practices at 3600 Broadway, Oakland, CA 94611. The listed phone number is (510) 752-1000.

What is Cayleigh Williamson's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Cayleigh Williamson enrolled in Medicare?

Yes. Cayleigh Williamson 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 Cayleigh Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cayleigh Williamson reassigns Medicare benefits to 6 organizations: Permanente Medical Group Inc (Richmond, CA), Cep America - Anesthesia, PC (Walnut Creek, CA), Sutter Valley Medical Foundation (Fairfield, CA), Green Anesthesia (Fairfield, CA), Anesthesia Services Of San Joaquin, P.C. (French Camp, CA) and 1 more organization, listed in the Medicare section above. 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 Cayleigh Williamson'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 Cayleigh Williamson was last updated on January 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.