DR. JENNIFER SUGAY DIONISIO DO
NPI 1235877150
Family Medicine in Fairfield, CA

Q: What is Jennifer Dionisio's NPI number?

The NPI number for Jennifer Dionisio is 1235877150. It was assigned to this individual provider in the NPPES registry on May 20, 2022.

Q: What is Jennifer Dionisio's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Jennifer Dionisio was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since May 20, 2022PECOS EnrolledAccepts Medicare Assignment

1550 GATEWAY BLVD, FAIRFIELD, CA 94533(707) 427-4000 Get Directions Write a Review

NPPES record last updated: September 9, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 9, 2025, Jun 8, 2022, May 20, 2022 (3 updates tracked since 2022).

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About Dr. Jennifer Sugay Dionisio Do NPPES

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

DR. JENNIFER SUGAY DIONISIO DO (NPI 1235877150) is an individual family medicine provider in Fairfield, California, licensed in California (20A21920) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS and is a graduate of Touro Un College Of Osteopathic Medicine, Vallejo (2022).

NPPES Registry Identity

NPI1235877150

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameDR. JENNIFER SUGAY DIONISIOCredential: DO

Location Address1550 GATEWAY BLVDFairfield, CA 94533-6900

Mailing Address1550 Gateway BlvdFairfield, CA 94533-6900

Phone(707) 427-4000

Sole ProprietorYes

Medical School CMSTouro Un College Of Osteopathic Medicine, VallejoGraduated 2022

Enumeration DateMay 20, 2022

Last NPPES UpdateSeptember 9, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 9, 2025

✔ NPI 1235877150 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · 20A21920

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1550 GATEWAY BLVD, Fairfield, CA 94533

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

Dr. Jennifer Sugay Dionisio Do 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 ID4284136177

PECOS Enrollment IDI20250909001441

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94533 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

$98.85 typical visit price

range $65.02 – $191.95

Typical copayment $24.71 (range $16.25 – $47.98)

Most-billed visit code 99203

Established Patient

$113.05 typical visit price

range $21.86 – $157.69

Typical copayment $28.26 (range $5.46 – $39.42)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

IMAN MUSALLAM

Pharmacist