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GREGORY JASON LAM M.D.
NPI 1871955922
Internal Medicine in Laguna Hills, CA

Active since March 27, 2016PECOS EnrolledAccepts Medicare Assignment
23961 CALLE DE LA MAGDALENA STE 200, LAGUNA HILLS, CA 92653(949) 238-4100 Get Directions Write a Review

NPPES record last updated: July 18, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 18, 2024, Sep 27, 2019, Mar 27, 2016 (3 updates tracked since 2016).

About Gregory Jason Lam M.d. NPPES

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

GREGORY JASON LAM M.D. (NPI 1871955922) is an individual internal medicine provider in Laguna Hills, California, licensed in California (A151470) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Santa Monica, and is a graduate of University Of California, San Francisco School Of Medicine (2016).

NPPES Registry Identity

NPI1871955922
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGREGORY JASON LAMCredential: M.D.
Location Address23961 CALLE DE LA MAGDALENA STE 200Laguna Hills, CA 92653-3645
Mailing Address101 The City Dr SOrange, CA 92868-3201
Phone(949) 238-4100
Sole ProprietorYes
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2016
Enumeration DateMarch 27, 2016
Last NPPES UpdateJuly 18, 20243 updates tracked since enumeration
NPPES CertifiedJune 7, 2024
✔ NPI 1871955922 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 · A151470
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.
23961 CALLE DE LA MAGDALENA STE 200, Laguna Hills, CA 92653
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Secondary Practice Location 1

Location 11245 16th St Ste 309Santa Monica, CA 90404 · Phone (310) 319-4377 · Fax (310) 319-4425

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Kansas, Inc..Insurance ›

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

Gregory Jason Lam 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 ID7113271297
PECOS Enrollment IDI20190819002705
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.

Areas of Expertise CMS Part B claims 3

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.
91 services72 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.
28 services25 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.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92653 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
10 suppliers26 claims70 services$5.65 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 2

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

DR. CHARLES BLUMBERG MD
Internal Medicine
23961 CALLE DE LA MAGDALENA STE 200
LAGUNA HILLS, CA 92653
Orange County (949) 238-4100
DR. GOL MINOO GOLSHANI M.D
Internal Medicine (Hematology & Oncology)
23961 CALLE DE LA MAGDALENA STE 200
LAGUNA HILLS, CA 92653
Orange County (949) 238-4100

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 Gregory Lam's NPI number?

The NPI number for Gregory Lam is 1871955922. It was assigned to this individual provider in the NPPES registry on March 27, 2016.

Where is Gregory Lam located?

Gregory Lam practices at 23961 Calle De La Magdalena Ste 200, Laguna Hills, CA 92653. The listed phone number is (949) 238-4100.

What is Gregory Lam's specialty?

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

Is Gregory Lam enrolled in Medicare?

Yes. Gregory Lam 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.

What insurance does Gregory Lam accept?

Health plans from Blue Cross and Blue Shield of Kansas, Inc. list Gregory Lam as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gregory Lam was last updated on July 18, 2024. 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.