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TIMOTHY TIEN-MIN LEE MD
NPI 1326254137
Psychiatry & Neurology - Psychiatry in Rancho Cucamonga, CA

Active since May 16, 2007PECOS Enrolled
85.18/100
CMS Quality Rating
10737 LAUREL ST STE 230, RANCHO CUCAMONGA, CA 91730(909) 989-5556(909) 989-5558 Get Directions Write a Review

NPPES record last updated: November 6, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Timothy Tien-min Lee Md NPPES

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

TIMOTHY TIEN-MIN LEE MD (NPI 1326254137) is an individual psychiatry provider in Rancho Cucamonga, California, licensed in California (A101050) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326254137
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameTIMOTHY TIEN-MIN LEECredential: MD
Location Address10737 LAUREL ST STE 230Rancho Cucamonga, CA 91730-7659
Mailing Address10737 Laurel St Ste 230Rancho Cucamonga, CA 91730-7659 · (909) 989-5556 · Fax (909) 989-5558
Phone(909) 989-5556
Fax(909) 989-5558
Sole ProprietorYes
Enumeration DateMay 16, 2007
Last NPPES UpdateNovember 6, 2023
NPPES CertifiedNovember 6, 2023
✔ NPI 1326254137 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A101050
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
10737 LAUREL ST STE 230, Rancho Cucamonga, CA 91730
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Timothy Tien-min Lee Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Timothy Lee reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Faculty Physicians And Surgeons Of Llusm
0.6 mi
Obstetrics & Gynecology
8599 HAVEN AVE STE 102&210
Rancho Cucamonga, CA 91730
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1568113827 (909) 558-2806
Sac Health System
11 mi
Federally Qualified Health Center (FQHC)
815 S WILLOW AVE
Rialto, CA 92376
  • Reassigned Medicare billing, California enrollment
  • 455 clinicians in this Medicare group
NPI 1386266112 (909) 382-7100

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91730 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$179.42 typical visit price
range $59.60 – $179.42
Typical copayment $44.85 (range $14.90 – $44.85)
Most-billed visit code 99205
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.81
Promoting Interoperability82
Improvement Activities40
Cost64.54

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR DENISE PERSICHINO DO INC
Clinic/Center
10737 LAUREL ST STE 230
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 435-0899
GLORIA SANCHEZ-PEREZ LMFT
Marriage & Family Therapist
10737 LAUREL ST STE 230
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 989-5556
KAREN P WILLIAMS PH.D.
Psychologist (Clinical)
10737 LAUREL ST STE 230
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 989-5556
PHYLLIS PAIGE BUNCH
Marriage & Family Therapist
10737 LAUREL ST STE 230
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 989-5556

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 Timothy Lee's NPI number?

The NPI number for Timothy Lee is 1326254137. It was assigned to this individual provider in the NPPES registry on May 16, 2007.

Where is Timothy Lee located?

Timothy Lee practices at 10737 Laurel St Ste 230, Rancho Cucamonga, CA 91730. The listed phone number is (909) 989-5556.

What is Timothy Lee's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Timothy Lee enrolled in Medicare?

Yes. Timothy Lee is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Timothy Lee's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Lee reassigns Medicare benefits to 2 organizations: Faculty Physicians And Surgeons Of Llusm (Rancho Cucamonga, CA) and Sac Health System (Rialto, CA). Each 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 Timothy Lee's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Timothy Lee was last updated on November 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.