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SIMON LEE M D A PROFESSIONAL CORP
NPI 1194748541
Internal Medicine in San Francisco, CA

Active since July 26, 2006
950 STOCKTON ST STE 205, SAN FRANCISCO, CA 94108(415) 837-0888(415) 837-1328 Get Directions Write a Review

NPPES record last updated: January 18, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 18, 2023, Jan 25, 2021 (2 updates tracked since 2021).

About Simon Lee M D A Professional Corp NPPES

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

SIMON LEE M D A PROFESSIONAL CORP (NPI 1194748541) is a healthcare organization registered as an internal medicine in San Francisco, California and active in the NPI registry since July 2006. The organization lists Simon Kwanmin Lee, President, as its authorized official.

NPPES Registry Identity

NPI1194748541
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSIMON LEE M D A PROFESSIONAL CORP
Location Address950 STOCKTON ST STE 205San Francisco, CA 94108-1619
Mailing Address950 Stockton St Ste 205San Francisco, CA 94108-1619 · (415) 837-0888 · Fax (415) 837-1328
Phone(415) 837-0888
Fax(415) 837-1328
Organization SubpartNo
Authorized OfficialSimon Kwanmin LeePresident · (415) 837-0888
Enumeration DateJuly 26, 2006
Last NPPES UpdateJanuary 18, 20232 updates tracked since enumeration
NPPES CertifiedJanuary 18, 2023
✔ NPI 1194748541 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G83169
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.
950 STOCKTON ST STE 205, San Francisco, CA 94108
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Other Identifiers 1

Medicaid00G831960CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Simon Lee M D A Professional Corp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Simon Lee M D A Professional Corp, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Alan Tam, NP
Nurse Practitioner
NPI 1154960334
950 STOCKTON ST STE 202
San Francisco, CA 94108
(650) 718-5763
✔ PECOS✔ Accepts MedicareSame address
Simon Lee, M.D.
Internal Medicine
NPI 1275532145
1828 EL CAMINO REAL SUITE 406
Burlingame, CA 94010
(650) 692-1388
✔ PECOS✔ Accepts Medicare14 mi
Bryan Lu, FNP
Nurse Practitioner
NPI 1598510117
1501 TROUSDALE DR FL 2
Burlingame, CA 94010
(650) 652-8600
✔ PECOS✔ Accepts Medicare14 mi
Feifei Yang, FNP
Nurse Practitioner
NPI 1114468493
300 PASTEUR DR
Stanford, CA 94305
(480) 963-8425
✔ PECOS✔ Accepts Medicare28 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 Simon Lee M D A Professional Corp's NPI number?

The NPI number for Simon Lee M D A Professional Corp is 1194748541. It was assigned to this organization in the NPPES registry on July 26, 2006.

Where is Simon Lee M D A Professional Corp located?

Simon Lee M D A Professional Corp is located at 950 Stockton St Ste 205, San Francisco, CA 94108. The listed phone number is (415) 837-0888.

What is Simon Lee M D A Professional Corp's specialty?

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

Is Simon Lee M D A Professional Corp enrolled in Medicare?

Yes. Simon Lee M D A Professional Corp is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Simon Lee M D A Professional Corp?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Simon Lee M D A Professional Corp. 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. The largest specialties are Nurse Practitioner (3) and Internal Medicine (1). 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 Simon Lee M D A Professional Corp was last updated on January 18, 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.