DR. LILY JENNY TSAI MD
NPI 1184633638
Obstetrics & Gynecology in Encinitas, CA

Q: What is Lily Tsai's NPI number?

The NPI number for Lily Tsai is 1184633638. It was assigned to this individual provider in the NPPES registry on August 5, 2006.

Q: What is Lily Tsai's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Lily Tsai was last updated on March 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since August 05, 2006PECOS Enrolled

310 SANTA FE DR, ENCINITAS, CA 92024(760) 633-7245 Get Directions Write a Review

NPPES record last updated: March 12, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Lily Jenny Tsai Md NPPES

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

DR. LILY JENNY TSAI MD (NPI 1184633638) is an individual obstetrics & gynecology provider in Encinitas, California, licensed in California (A109827) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2006).

NPPES Registry Identity

NPI1184633638

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. LILY JENNY TSAICredential: MD

Location Address310 SANTA FE DREncinitas, CA 92024-5110

Mailing Address10790 Rancho Bernardo RdSan Diego, CA 92127-5705 · (760) 633-7245

Phone(760) 633-7245

Sole ProprietorNo

Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2006

Enumeration DateAugust 5, 2006

Last NPPES UpdateMarch 12, 2020

NPPES CertifiedMarch 12, 2020

✔ NPI 1184633638 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · A109827

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

310 SANTA FE DR, Encinitas, CA 92024

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Lily Jenny Tsai Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4587853197

PECOS Enrollment IDI20110113000426

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 Reassignment

Medicare enrollment records show Lily Tsai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Emergency And Acute Care Medical Corporation

18 mi

Emergency Medicine

7901 FROST ST
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
1,437 clinicians in this Medicare group

NPI 1437103942 (858) 939-3400

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

81 services61 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

27 services26 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

18 services14 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92024 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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.

Other Providers at the Same Location NPPES 10

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

DR. DINA FAINMAN MD

Obstetrics & Gynecology

310 SANTA FE DR, SUITE 204
ENCINITAS, CA 92024

San Diego County (760) 633-7245

DR. ALI YOUSSEF FAKHREDDINE M.D.

Internal Medicine (Gastroenterology)

310 SANTA FE DR
ENCINITAS, CA 92024

San Diego County (760) 633-7280

RIAZ M. AHMED M.D.

Internal Medicine (Cardiovascular Disease)

310 SANTA FE DR
ENCINITAS, CA 92024

San Diego County (760) 633-7275

W. BLAINE PHILLIPS, M.D., INC.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

310 SANTA FE DR, SUITE 111
ENCINITAS, CA 92024

San Diego County (760) 943-1923

MARY ANN MERCADO LUGOD-MANALAD NP-C

Nurse Practitioner (Family)

310 SANTA FE DR, STE 112
ENCINITAS, CA 92024

San Diego County (760) 632-9600

REBECCA MOORE RN., CDE

Nutritionist (Nutrition, Education)

310 SANTA FE DR
ENCINITAS, CA 92024

San Diego County (760) 753-5594

SKYHAR MD INC

Orthopaedic Surgery

310 SANTA FE DR, SUITE 112
ENCINITAS, CA 92024

San Diego County (760) 690-3800

DR. DWIGHT E. COOK M.D.

Family Medicine

310 SANTA FE DR
ENCINITAS, CA 92024

San Diego County (760) 753-5594

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 Lily Tsai's NPI number?

The NPI number for Lily Tsai is 1184633638. It was assigned to this individual provider in the NPPES registry on August 5, 2006.

Where is Lily Tsai located?

Lily Tsai practices at 310 Santa Fe Dr, Encinitas, CA 92024. The listed phone number is (760) 633-7245.

What is Lily Tsai's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Lily Tsai enrolled in Medicare?

Yes. Lily Tsai is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Lily Tsai's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lily Tsai reassigns Medicare benefits to Emergency And Acute Care Medical Corporation (San Diego, CA). The 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 Lily Tsai'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 Lily Tsai was last updated on March 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.