What is Stelios Katzakis's NPI number?

Stelios Katzakis's National Provider Identifier (NPI) is 1134362262, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Stelios Katzakis's specialty?

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

Where is Stelios Katzakis located?

Stelios Katzakis's practice location on file with NPPES is 1420 N Tracy Blvd, Tracy, CA 95376-3451.

What is Stelios Katzakis's phone number?

The practice phone number listed in the NPPES registry for Stelios Katzakis is (209) 832-6018.

Does Stelios Katzakis accept Medicare?

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

Is Stelios Katzakis's NPI active?

Yes — Stelios Katzakis's NPI (1134362262) is active in the NPPES registry as of the last update on 2016-06-22.

IndividualActiveAccepts Medicare

Stelios Katzakis, PA-C

NPI 1134362262 · Physician Assistant · Tracy, CA

Stelios Katzakis, PA-C is a Physician Assistant provider in Tracy, CA (NPI 1134362262).

Provider details

NPI number: 1134362262
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Credential: PA-C
Sex: Male
Sole proprietor: Yes
License: PA20240 (CA)

Practice location

1420 N Tracy Blvd

Tracy, CA 95376-3451

Phone: (209) 832-6018

Street-level locationGet directions

More CA providers

Mailing address

2409 Snowy Egret Ct

Elk Grove, CA 95757-8173

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA20240 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Enrolled with Medicare as Order and Referring Only - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(86/100 index)

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

Registry tenure38% of score
17 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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 · 2 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	61	59
Ondansetronbrand: Ondansetron Odt	22	21

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.

Enumerated: 2009-04-20
Last updated: 2016-06-22

Frequently asked questions

What is Stelios Katzakis's NPI number?: Stelios Katzakis's National Provider Identifier (NPI) is 1134362262, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Stelios Katzakis's specialty?: Stelios Katzakis is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
Where is Stelios Katzakis located?: Stelios Katzakis's practice location on file with NPPES is 1420 N Tracy Blvd, Tracy, CA 95376-3451.
What is Stelios Katzakis's phone number?: The practice phone number listed in the NPPES registry for Stelios Katzakis is (209) 832-6018.
Does Stelios Katzakis accept Medicare?: Stelios Katzakis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Stelios Katzakis's NPI active?: Yes — Stelios Katzakis's NPI (1134362262) is active in the NPPES registry as of the last update on 2016-06-22.

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

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions