What is Carlos Guerrero's NPI number?

Carlos Guerrero's National Provider Identifier (NPI) is 1023026523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Carlos Guerrero's specialty?

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

Where is Carlos Guerrero located?

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

What is Carlos Guerrero's phone number?

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

Does Carlos Guerrero accept Medicare?

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

Is Carlos Guerrero's NPI active?

Yes — Carlos Guerrero's NPI (1023026523) is active in the NPPES registry as of the last update on 2023-11-20.

IndividualActiveAccepts Medicare

Carlos Guerrero, PA-C

NPI 1023026523 · Physician Assistant · Tustin, CA

Carlos Guerrero, PA-C is a Physician Assistant provider in Tustin, CA (NPI 1023026523).

Provider details

NPI number: 1023026523
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Male
Sole proprietor: No
License: PA14967 (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

346 La Tortola Dr

Walnut, CA 91789-2230

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA14967 (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 92708-7516
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(100/100 index)

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

Registry tenure33% of score
20 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 · 5 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	22	13
Metformin Hcl	19	—
Tamsulosin Hcl	16	—
Celecoxib	14	—
Levothyroxine Sodium	12	—

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

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

$224 across 9 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: 2006-08-03
Last updated: 2023-11-20
Certified: 2023-11-20

Frequently asked questions

What is Carlos Guerrero's NPI number?: Carlos Guerrero's National Provider Identifier (NPI) is 1023026523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Carlos Guerrero's specialty?: Carlos Guerrero is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Carlos Guerrero located?: Carlos Guerrero's practice location on file with NPPES is 661 W 1st St Ste G, Tustin, CA 92780-2939.
What is Carlos Guerrero's phone number?: The practice phone number listed in the NPPES registry for Carlos Guerrero is (714) 665-9890.
Does Carlos Guerrero accept Medicare?: Carlos Guerrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Carlos Guerrero's NPI active?: Yes — Carlos Guerrero's NPI (1023026523) is active in the NPPES registry as of the last update on 2023-11-20.

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

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.

Drug

Part D claims (2024)

Beneficiaries

Atorvastatin Calcium

Metformin Hcl

—

Tamsulosin Hcl

—

Celecoxib

—

Levothyroxine Sodium

—

Transparency — industry payments

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

$224 across 9 records (Open Payments 2024)

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)

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Frequently asked questions