What is Stephen Duffy's NPI number?

Stephen Duffy's National Provider Identifier (NPI) is 1073763447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Stephen Duffy's specialty?

Stephen Duffy is listed in the NPPES registry with a primary specialty of Plastic Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Stephen Duffy located?

Stephen Duffy's practice location on file with NPPES is 950 S Arroyo Pkwy Ste 310, Pasadena, CA 91105-3930.

What is Stephen Duffy's phone number?

The practice phone number listed in the NPPES registry for Stephen Duffy is (626) 449-4859.

Does Stephen Duffy accept Medicare?

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

Is Stephen Duffy's NPI active?

Yes — Stephen Duffy's NPI (1073763447) is active in the NPPES registry as of the last update on 2022-07-10.

IndividualActiveAccepts Medicare

Stephen Duffy, M.D.

NPI 1073763447 · Plastic Surgery Physician · Pasadena, CA

Stephen Duffy, M.D. is a Plastic Surgery Physician provider in Pasadena, CA (NPI 1073763447).

Provider details

NPI number: 1073763447
Entity type: Individual
Primary specialty: Plastic Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 31460 (SC)

Practice location

950 S Arroyo Pkwy Ste 310

Pasadena, CA 91105-3930

Phone: (626) 449-4859

Fax: (626) 403-0311

Street-level locationGet directions

More CA providers

Mailing address

35 E Glenarm St

Pasadena, CA 91105-3418

Specialties & taxonomies

Plastic Surgery PhysicianPrimary208200000XLicense 31460 (SC)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Plastic and Reconstructive Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(89/100 index)

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

Registry tenure33% of score
18 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
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.

Transparency — industry payments

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

$144 across 5 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: 2008-09-23
Last updated: 2022-07-10
Certified: 2022-07-10

Frequently asked questions

What is Stephen Duffy's NPI number?: Stephen Duffy's National Provider Identifier (NPI) is 1073763447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Stephen Duffy's specialty?: Stephen Duffy is listed in the NPPES registry with a primary specialty of Plastic Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Stephen Duffy located?: Stephen Duffy's practice location on file with NPPES is 950 S Arroyo Pkwy Ste 310, Pasadena, CA 91105-3930.
What is Stephen Duffy's phone number?: The practice phone number listed in the NPPES registry for Stephen Duffy is (626) 449-4859.
Does Stephen Duffy accept Medicare?: Stephen Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Stephen Duffy's NPI active?: Yes — Stephen Duffy's NPI (1073763447) is active in the NPPES registry as of the last update on 2022-07-10.

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

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions