What is Steven Yoo's NPI number?

Steven Yoo's National Provider Identifier (NPI) is 1669736872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Steven Yoo's specialty?

Steven Yoo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Steven Yoo located?

Steven Yoo's practice location on file with NPPES is 1400 Computer Dr Ste 301, Westborough, MA 01581.

What is Steven Yoo's phone number?

The practice phone number listed in the NPPES registry for Steven Yoo is (617) 420-5316.

Does Steven Yoo accept Medicare?

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

Is Steven Yoo's NPI active?

Yes — Steven Yoo's NPI (1669736872) is active in the NPPES registry as of the last update on 2020-01-03.

IndividualActiveAccepts Medicare

Steven Yoo, D.O.

NPI 1669736872 · Internal Medicine Physician · Westborough, MA

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

Steven Yoo, D.O. is a Internal Medicine Physician provider in Westborough, MA (NPI 1669736872).

Provider details

NPI number: 1669736872
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: D.O.
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 269662 (MA)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Detailed profile(82/100 index)

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

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
4 documented practice locations

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.

Practice location

1400 Computer Dr Ste 301

Westborough, MA 01581

Phone: (617) 420-5316

Street-level locationGet directions

More MA providers

Mailing address

1400 Computer Dr Ste 301

Westborough, MA 01581-1790

Additional practice locations (3)

1 Jarrett White Rd
Tripler Army Medical Center
Tripler Army Medical Center, HI 96859-5001
Phone: (808) 433-6661
90 Vandenberg Dr Bldg 1900
Hanscom Afb, MA 01731-2104
Phone: (781) 225-6789
10 Dorrance St Ste 700
Providence, RI 02903-2014
Phone: (833) 229-0957

Enumerated: 2012-07-02
Last updated: 2020-01-03
Certified: 2020-01-03

Frequently asked questions

What is Steven Yoo's NPI number?: Steven Yoo's National Provider Identifier (NPI) is 1669736872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Steven Yoo's specialty?: Steven Yoo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Steven Yoo located?: Steven Yoo's practice location on file with NPPES is 1400 Computer Dr Ste 301, Westborough, MA 01581.
What is Steven Yoo's phone number?: The practice phone number listed in the NPPES registry for Steven Yoo is (617) 420-5316.
Does Steven Yoo accept Medicare?: Steven Yoo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Steven Yoo's NPI active?: Yes — Steven Yoo's NPI (1669736872) is active in the NPPES registry as of the last update on 2020-01-03.

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