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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LYNN WHANG MD
NPI 1881396356
Internal Medicine in Costa Mesa, CA

Active since March 20, 2023PECOS Enrolled
1190 BAKER ST STE 100, COSTA MESA, CA 92626(949) 791-3250 Get Directions Write a Review

NPPES record last updated: October 25, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 29, 2026, Mar 20, 2023 (2 updates tracked since 2023).

About Lynn Whang Md NPPES

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

LYNN WHANG MD (NPI 1881396356) is an individual internal medicine provider in Costa Mesa, California, licensed in California (A207398) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881396356
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameLYNN WHANGCredential: MD
Location Address1190 BAKER ST STE 100Costa Mesa, CA 92626-4105
Mailing Address1190 Baker St Ste 100Costa Mesa, CA 92626-4105 · (949) 791-3250
Phone(949) 791-3250
Sole ProprietorNo
Enumeration DateMarch 20, 2023
Last NPPES UpdateOctober 25, 20262 updates tracked since enumeration
NPPES CertifiedOctober 25, 2026
✔ NPI 1881396356 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A207398
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1190 BAKER ST STE 100, Costa Mesa, CA 92626
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lynn Whang 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92626 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 9

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

CONNIE PHAM DO
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (949) 791-3250
JOHN JEON MD
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (949) 791-3250
DR. PRAVIN SHAW D.O.
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (714) 668-2500
DR. TRUCVY HOANG LE M.D.
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (949) 791-3250
DR. HAU DO MD
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (714) 668-2500
MANDY NGUYEN
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (949) 791-3250
SUSAN LYNN FLAMING
Nurse Practitioner (Family)
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (714) 668-2500
ARTURO ACOSTA M.D.
Family Medicine
1190 BAKER ST STE 100
COSTA MESA, CA 92626
Orange County (714) 668-2500

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 Lynn Whang's NPI number?

The NPI number for Lynn Whang is 1881396356. It was assigned to this individual provider in the NPPES registry on March 20, 2023.

Where is Lynn Whang located?

Lynn Whang practices at 1190 Baker St Ste 100, Costa Mesa, CA 92626. The listed phone number is (949) 791-3250.

What is Lynn Whang's specialty?

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

Is Lynn Whang enrolled in Medicare?

Yes. Lynn Whang is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Lynn Whang was last updated on October 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.