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LILY YOUJEONG JEONG
NPI 1942889977
Internal Medicine - Nephrology in San Francisco, CA

Active since April 06, 2021PECOS Enrolled
500 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 353-2507 Get Directions Write a Review

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

Record update history: Aug 12, 2026, Aug 7, 2026, Apr 6, 2021 (3 updates tracked since 2021).

About Lily Youjeong Jeong NPPES

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

LILY YOUJEONG JEONG (NPI 1942889977) is an individual nephrology provider in San Francisco, California, licensed in California (A207343) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1942889977
Entity TypeIndividualFemale
Primary Taxonomy207RN0300X
Provider Legal NameLILY YOUJEONG JEONG
Location Address500 PARNASSUS AVESan Francisco, CA 94143-2203
Mailing Address1959 Ne Pacific StSeattle, WA 98195-0001
Phone(415) 353-2507
Sole ProprietorYes
Enumeration DateApril 6, 2021
Last NPPES UpdateAugust 12, 20263 updates tracked since enumeration
NPPES CertifiedAugust 12, 2026
✔ NPI 1942889977 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A207343
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
500 PARNASSUS AVE, San Francisco, CA 94143
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Other Names 1

Professional Name (2)Lily Jeong

Secondary Practice Location 1

Location 11959 NE Pacific StSeattle, WA 98195-0001 · Phone (206) 598-3300

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lily Youjeong Jeong 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

3

Medicare enrollment records show Lily Jeong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
Same address
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
Same address
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
Regents Of The University Of California
Same address
Endocrinology, Diabetes & Metabolism
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
NPI 1376613943 (415) 353-2350

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 94143 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
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 20

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

PRATAP MUKHERJEE M.D, M.S
Thoracic Surgery (Cardiothoracic Vascular Surgery)
500 PARNASSUS AVE, MUW425
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7924
ARUSHI GULATI MD
Student in an Organized Health Care Education/Training Program
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-4562
SARAH CHONG
Pharmacist
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 681-3394
ABBEY LYNN KENNEDY M.D.
Orthopaedic Surgery
500 PARNASSUS AVE, MU 320W
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-6043
RACHEL LEVY MD
Obstetrics & Gynecology
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-4562
PROF. MATTHIEU LEGRAND MD, PHD
Anesthesiology (Critical Care Medicine)
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-9035
CHLOE CONNOLLY DLOTT
Student in an Organized Health Care Education/Training Program
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (628) 206-8000
ALLISON NGAN
Pharmacist
500 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 681-3394

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 Jeong's NPI number?

The NPI number for Lily Jeong is 1942889977. It was assigned to this individual provider in the NPPES registry on April 6, 2021.

Where is Lily Jeong located?

Lily Jeong practices at 500 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 353-2507.

What is Lily Jeong's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Lily Jeong enrolled in Medicare?

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

Which organizations bill Medicare for Lily Jeong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lily Jeong reassigns Medicare benefits to 3 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Regents Of The University Of California (San Francisco, 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 Lily Jeong'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 Jeong was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.