1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Internal Medicine
  6. NPI Profile

TRUELIGHT MEDICAL CORPORATION
NPI 1952019812
Internal Medicine in San Francisco, CA

Active since November 09, 2022
909 HYDE ST STE 230, SAN FRANCISCO, CA 94109(415) 779-8332(415) 537-9078 Get Directions Write a Review

NPPES record last updated: July 27, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 27, 2023, Nov 9, 2022 (2 updates tracked since 2022).

About Truelight Medical Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TRUELIGHT MEDICAL CORPORATION (NPI 1952019812) is a healthcare organization registered as an internal medicine in San Francisco, California and active in the NPI registry since November 2022. The organization lists Alexander Chang, Ceo, as its authorized official.

NPPES Registry Identity

NPI1952019812
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameTRUELIGHT MEDICAL CORPORATION
Location Address909 HYDE ST STE 230San Francisco, CA 94109-4845
Mailing Address909 Hyde St Ste 230San Francisco, CA 94109-4845 · (415) 779-8332 · Fax (415) 537-9078
Phone(415) 779-8332
Fax(415) 537-9078
Organization SubpartNo
Authorized OfficialAlexander ChangCeo · (650) 576-0308
Enumeration DateNovember 9, 2022
Last NPPES UpdateJuly 27, 20232 updates tracked since enumeration
NPPES CertifiedJuly 27, 2023
✔ NPI 1952019812 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X
909 HYDE ST STE 230, San Francisco, CA 94109
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Truelight Medical Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Truelight Medical Corporation, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Alexander Chang, M.D.
Internal Medicine
NPI 1225356231
909 HYDE ST STE 230
San Francisco, CA 94109
(415) 779-8332
✔ PECOS✔ Accepts MedicareSame address
Matthew Yee
Internal Medicine
NPI 1962821298
1501 TROUSDALE DR
Burlingame, CA 94010
(650) 696-3520
✔ PECOS✔ Accepts Medicare14 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Truelight Medical Corporation's NPI number?

The NPI number for Truelight Medical Corporation is 1952019812. It was assigned to this organization in the NPPES registry on November 9, 2022.

Where is Truelight Medical Corporation located?

Truelight Medical Corporation is located at 909 Hyde St Ste 230, San Francisco, CA 94109. The listed phone number is (415) 779-8332.

What is Truelight Medical Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Truelight Medical Corporation enrolled in Medicare?

Yes. Truelight Medical Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Truelight Medical Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Truelight Medical Corporation. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Truelight Medical Corporation was last updated on July 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.