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GRETHEL JOY ROA ESCALA MSN, BSN, RN, FNP-C
NPI 1528743697
Nurse Practitioner in Vallejo, CA

Active since June 16, 2023PECOS EnrolledAccepts Medicare Assignment
2200 TUOLUMNE ST, VALLEJO, CA 94589(707) 644-7401 Get Directions Write a Review

NPPES record last updated: September 14, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 14, 2025, Jun 16, 2023 (2 updates tracked since 2023).

About Grethel Joy Roa Escala Msn, Bsn, Rn, Fnp-c NPPES

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

GRETHEL JOY ROA ESCALA MSN, BSN, RN, FNP-C (NPI 1528743697) is an individual nurse practitioner in Vallejo, California, licensed in California (95022387) and active in the NPI registry since June 2023. She is enrolled in Medicare PECOS, maintains a secondary practice location in Vallejo, and is a graduate of Touro Un College Of Osteopathic Medicine, Vallejo (2022).

NPPES Registry Identity

NPI1528743697
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameGRETHEL JOY ROA ESCALACredential: MSN, BSN, RN, FNP-C
Location Address2200 TUOLUMNE STVallejo, CA 94589-2523
Mailing Address1310 Club DrVallejo, CA 94592-1187 · (707) 592-7796
Phone(707) 644-7401
Sole ProprietorYes
Medical School CMSTouro Un College Of Osteopathic Medicine, VallejoGraduated 2022
Enumeration DateJune 16, 2023
Last NPPES UpdateSeptember 14, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 14, 2025
✔ NPI 1528743697 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CA · 95022387
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
2200 TUOLUMNE ST, Vallejo, CA 94589
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Secondary Practice Location 1

Location 1975 Sereno DrVallejo, CA 94589-2441 · Phone (707) 592-7796

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

Grethel Joy Roa Escala Msn, Bsn, Rn, 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.

PECOS PAC ID5496282311
PECOS Enrollment IDI20241217001325
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.

Medicare Billing Reassignments

6

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

California Wound & Hyperbaric Specialists Inc
14 mi
Wound Care
2255 MORELLO AVE STE 121
Pleasant Hill, CA 94523
  • Reassigned Medicare billing, California enrollment
  • 10 clinicians in this Medicare group
NPI 1144105206 (510) 224-6556
California Post-Acute Medical Group 1, Inc.
25 mi
Hospitalist
508 WESTLINE DR
Alameda, CA 94501
  • Reassigned Medicare billing, California enrollment
  • 11 clinicians in this Medicare group
NPI 1265971949 (702) 233-0684
Raksha Health Inc
27 mi
Health Service
728 VIA PALERMO
San Ramon, CA 94583
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1477317345 (828) 803-9431
Ca Pacs 2 Medical Group Inc
30 mi
Hospitalist
14766 WASHINGTON AVE
San Leandro, CA 94578
  • Reassigned Medicare billing, California enrollment
  • 11 clinicians in this Medicare group
NPI 1801372669 (865) 693-1000
Cs Pacs 3 Ca Medical Group Inc
53 mi
Internal Medicine
1949 GRANT RD
Mountain View, CA 94040
  • Reassigned Medicare billing, California enrollment
  • 10 clinicians in this Medicare group
NPI 1922775360 (650) 968-2990
Cs Pacs 3 West LLC
55 mi
Hospitalist
1002 W FREMONT AVE
Sunnyvale, CA 94087
  • Reassigned Medicare billing, California enrollment
  • 9 clinicians in this Medicare group
NPI 1073378238 (408) 739-2383

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 94589 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 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VIVIAN TRAN NGUYEN
Speech-Language Pathologist
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (714) 889-0760
WINDSOR VALLEJO CARE CENTER, LLC
Skilled Nursing Facility
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
GRETCHEN SELL-FINLEY MS CCC-SLP
Speech-Language Pathologist
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
DENNIS SOTTO PTA
Physical Therapy Assistant
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
NINA DAVID-NARANJO OT
Occupational Therapist
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
IMEE GRAYDA TUAZON PTA
Physical Therapy Assistant
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
HELIOS HEALTHCARE, LLC
Durable Medical Equipment & Medical Supplies (Parenteral & Enteral Nutrition)
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401
REBECCA ESTHER ABRAHAM MS SLP CFY
Speech-Language Pathologist
2200 TUOLUMNE ST
VALLEJO, CA 94589
Napa County (707) 644-7401

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 Grethel Joy Escala's NPI number?

The NPI number for Grethel Joy Escala is 1528743697. It was assigned to this individual provider in the NPPES registry on June 16, 2023.

Where is Grethel Joy Escala located?

Grethel Joy Escala practices at 2200 Tuolumne St, Vallejo, CA 94589. The listed phone number is (707) 644-7401.

What is Grethel Joy Escala's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Grethel Joy Escala enrolled in Medicare?

Yes. Grethel Joy Escala 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 Grethel Joy Escala's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grethel Joy Escala reassigns Medicare benefits to 6 organizations: California Wound & Hyperbaric Specialists Inc (Pleasant Hill, CA), California Post-Acute Medical Group 1, Inc. (Alameda, CA), Raksha Health Inc (San Ramon, CA), Ca Pacs 2 Medical Group Inc (San Leandro, CA), Cs Pacs 3 Ca Medical Group Inc (Mountain View, 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 Grethel Joy Escala'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 Grethel Joy Escala was last updated on September 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.