CHEYENNE CASSEL SONNTAG MD
NPI 1104244144
Surgery in Palo Alto, CA

Active since April 05, 2014PECOS EnrolledAccepts Medicare Assignment
91.85/100
CMS Quality Rating
300 PASTEUR DR, PALO ALTO, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: April 27, 2024. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Apr 27, 2024, Sep 6, 2023, Aug 31, 2023 and 3 more (6 updates tracked since 2021).

About Cheyenne Cassel Sonntag Md NPPES

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

CHEYENNE CASSEL SONNTAG MD (NPI 1104244144) is an individual surgery provider in Palo Alto, California, licensed in California (A171743) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2014).

NPPES Registry Identity

NPI1104244144
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameCHEYENNE CASSEL SONNTAGCredential: MD
Location Address300 PASTEUR DRPalo Alto, CA 94305-2200
Mailing Address300 Pasteur DrPalo Alto, CA 94305-2200 · (650) 723-4000
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2014
Enumeration DateApril 5, 2014
Last NPPES UpdateApril 27, 20246 updates tracked since enumeration
NPPES CertifiedApril 27, 2024
NPI 1104244144 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License Licensed in CA · A171743
Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License A171743 (CA)
300 PASTEUR DR, Palo Alto, CA 94305

Other Names 1

Other Name (5)Cassie Sonntag

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Cheyenne Cassel Sonntag Md 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 ID3870716954
PECOS Enrollment IDI20220811001364
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
137 services55 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
91 services68 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
89 services70 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
53 services53 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
33 services33 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
23 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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.

91.85/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality83.53
Promoting Interoperability100
Improvement Activities40
Cost68.01

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.

Emergency Medicine
300 PASTEUR DR, H3200, M/C 5230
PALO ALTO, CA 94305
Anesthesiology
300 PASTEUR DR
STANFORD, CA 94305
Obstetrics & Gynecology
300 PASTEUR DR
STANFORD, CA 94305
Obstetrics & Gynecology
300 PASTEUR DR
STANFORD, CA 94305
Nurse Practitioner
300 PASTEUR DR, SUMC - PEDS PHYSICIAN BILLING MC:5530
PALO ALTO, CA 94305
Anesthesiology
300 PASTEUR DR
STANFORD, CA 94305
Anesthesiology
300 PASTEUR DR
STANFORD, CA 94305
Anesthesiology
300 PASTEUR DR
STANFORD, CA 94305

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104244144, enumerated as an "individual" on April 05, 2014.

The provider is located at 300 PASTEUR DR PALO ALTO, CA 94305 and the phone number is (650) 723-4000.

Surgery with taxonomy code 208600000X.