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LAWRENCE CHUNG-LUN CHANG M.D.
NPI 1528046430
Internal Medicine in San Clemente, CA

Active since January 03, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D2021391 · Waiver
665 CAMINO DE LOS MARES, SUITE 301, SAN CLEMENTE, CA 92673(949) 240-9664(949) 240-0327 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Lawrence Chung-lun Chang M.d. NPPES

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

LAWRENCE CHUNG-LUN CHANG M.D. (NPI 1528046430) is an individual internal medicine provider in San Clemente, California, licensed in California (A54221) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through March 10, 2027, and is a graduate of University Of Texas Medical Branch At Galveston (1993).

NPPES Registry Identity

NPI1528046430
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameLAWRENCE CHUNG-LUN CHANGCredential: M.D.
Location Address665 CAMINO DE LOS MARES, SUITE 301San Clemente, CA 92673-2859
Mailing Address665 Camino De Los Mares, Suite 301San Clemente, CA 92673-2859 · (949) 240-9664 · Fax (949) 240-0327
Phone(949) 240-9664
Fax(949) 240-0327
Sole ProprietorYes
Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1993
Enumeration DateJanuary 3, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1528046430 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 · A54221
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.
665 CAMINO DE LOS MARES, San Clemente, CA 92673
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Other Identifiers 2

Medicare UPING25014CA
Medicare ID-Type UnspecifiedA54221CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Lawrence Chung-lun Chang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3779627302
PECOS Enrollment IDI20100220000411
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2021391

Lawrence C Chang MD · San Clemente, CA
Active · expires Mar 10, 2027
CLIA Number05D2021391
Laboratory TypePhysician Office
Certificate Effective DateMarch 11, 2025
Certificate Expiration DateMarch 10, 2027
Laboratory DirectorDr. Lawrence C. Chang
Laboratory Phone(949) 240-9664
Laboratory LocationLawrence C Chang MD665 Camino De Los Mares Ste 301, San Clemente, CA 92673
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 7

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 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.
508 services192 patients
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.
236 services114 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
124 services113 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
119 services119 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
77 services76 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
29 services29 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92673 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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers13 claims15 services$6.69 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

ANESTHESIA SNOOZ INC
Anesthesiology
665 CAMINO DE LOS MARES, #103
SAN CLEMENTE, CA 92673
Orange County (760) 729-7101
DR. GABRIEL CARABULEA M.D.
Internal Medicine (Hematology & Oncology)
665 CAMINO DE LOS MARES, STE 208
SAN CLEMENTE, CA 92673
Orange County (714) 466-0787
JOHN RUSSELL GORNY M.D.
Obstetrics & Gynecology
665 CAMINO DE LOS MARES, SUITE 203A
SAN CLEMENTE, CA 92673
Orange County (949) 661-3101
DANIEL T. TAM, M.D. INC
Internal Medicine (Cardiovascular Disease)
665 CAMINO DE LOS MARES, STE 305
SAN CLEMENTE, CA 92673
Orange County (949) 493-0811
WILLIAM CAPOBIANCO, D.D.S., INC
Dentist (General Practice)
665 CAMINO DE LOS MARES, SUITE 303
SAN CLEMENTE, CA 92673
Orange County (949) 443-2404
FARAMARZ PAYANDEH MD
Internal Medicine
665 CAMINO DE LOS MARES, #210
SAN CLEMENTE, CA 92673
Orange County (714) 665-1600
MRS. DENA MARIE DE LA TORRE CNM, WHCNP
Advanced Practice Midwife
665 CAMINO DE LOS MARES, SUITE 203A
SAN CLEMENTE, CA 92673
Orange County (949) 661-3101
DR. NICHOLAS C SALVATI DMD
Dentist
665 CAMINO DE LOS MARES, #205
SAN CLEMENTE, CA 92673
Orange County (949) 443-0161

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 Lawrence Chang's NPI number?

The NPI number for Lawrence Chang is 1528046430. It was assigned to this individual provider in the NPPES registry on January 3, 2006.

Where is Lawrence Chang located?

Lawrence Chang practices at 665 Camino De Los Mares Suite 301, San Clemente, CA 92673. The listed phone number is (949) 240-9664.

What is Lawrence Chang's specialty?

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

Is Lawrence Chang enrolled in Medicare?

Yes. Lawrence Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Lawrence Chang hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2021391) is associated with this NPI, valid through March 10, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Lawrence Chang was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.