What is Vivian Montes's NPI number?

Vivian Montes's National Provider Identifier (NPI) is 1881358026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Vivian Montes's specialty?

Vivian Montes is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Vivian Montes located?

Vivian Montes's practice location on file with NPPES is 661 W 1st St Ste G, Tustin, CA 92780-2939.

What is Vivian Montes's phone number?

The practice phone number listed in the NPPES registry for Vivian Montes is (714) 665-9890.

Does Vivian Montes accept Medicare?

Vivian Montes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Vivian Montes's NPI active?

Yes — Vivian Montes's NPI (1881358026) is active in the NPPES registry as of the last update on 2026-01-29.

IndividualActiveAccepts Medicare

Vivian Montes, PA

NPI 1881358026 · Physician Assistant · Tustin, CA

Vivian Montes, PA is a Physician Assistant provider in Tustin, CA (NPI 1881358026).

Provider details

NPI number: 1881358026
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA
Sex: Female
Sole proprietor: Yes
License: PA62019 (CA)

Practice location

661 W 1st St Ste G

Tustin, CA 92780-2939

Phone: (714) 665-9890

Fax: (714) 665-9891

Street-level locationGet directions

More CA providers

Mailing address

661 W 1st St Ste G

Tustin, CA 92780-2939

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA62019 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (2)

9918 Katella Ave Ste A-C
Anaheim, CA 92804-6465
Phone: (714) 644-9494
Fax: (714) 644-9894
11180 Warner Ave Ste 353
Fountain Valley, CA 92708-4098
Phone: (714) 968-6789
Fax: (714) 202-2626

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
5 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
3 documented practice locations
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	106	53
Metformin Hcl	56	29
Lisinopril	54	29
Amlodipine Besylate	51	21
Levothyroxine Sodium	48	18
Losartan Potassium	42	23
Omeprazole

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$151 across 7 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2021-10-25
Last updated: 2026-01-29
Certified: 2026-01-29

Frequently asked questions

What is Vivian Montes's NPI number?: Vivian Montes's National Provider Identifier (NPI) is 1881358026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Vivian Montes's specialty?: Vivian Montes is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Vivian Montes located?: Vivian Montes's practice location on file with NPPES is 661 W 1st St Ste G, Tustin, CA 92780-2939.
What is Vivian Montes's phone number?: The practice phone number listed in the NPPES registry for Vivian Montes is (714) 665-9890.
Does Vivian Montes accept Medicare?: Vivian Montes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Vivian Montes's NPI active?: Yes — Vivian Montes's NPI (1881358026) is active in the NPPES registry as of the last update on 2026-01-29.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (2)

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (2)

Frequently asked questions

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments