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DR. ANN LAN MAI MD
NPI 1215001904
Internal Medicine in Irvine, CA

Active since November 17, 2006PECOS EnrolledAccepts Medicare Assignment
4950 BARRANCA PKWY STE 207, IRVINE, CA 92604(949) 262-9700(949) 262-0700 Get Directions Write a Review

NPPES record last updated: August 20, 2024. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Dr. Ann Lan Mai Md NPPES

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

DR. ANN LAN MAI MD (NPI 1215001904) is an individual internal medicine provider in Irvine, California, licensed in California (A61491) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1995).

NPPES Registry Identity

NPI1215001904
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. ANN LAN MAICredential: MD
Location Address4950 BARRANCA PKWY STE 207Irvine, CA 92604-8648
Mailing AddressPo Box 13279Newport Beach, CA 92658-5091 · (949) 262-9700 · Fax (949) 262-0700
Phone(949) 262-9700
Fax(949) 262-0700
Sole ProprietorYes
Medical School CMSOtherGraduated 1995
Enumeration DateNovember 17, 2006
Last NPPES UpdateAugust 20, 2024
NPPES CertifiedAugust 20, 2024
✔ NPI 1215001904 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 · A61491
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.
4950 BARRANCA PKWY STE 207, Irvine, CA 92604
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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 and accepts Medicare assignment

Dr. Ann Lan Mai Md 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 ID2860467677
PECOS Enrollment IDI20040826000465
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 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.
50 services27 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.
48 services27 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.
23 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92604 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 2

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

GRACE LOZINSKI M.D.
Internal Medicine
4950 BARRANCA PKWY STE 207
IRVINE, CA 92604
Orange County (949) 262-9700
GRACE LOZINSKI MD INC
Internal Medicine
4950 BARRANCA PKWY STE 207
IRVINE, CA 92604
Orange County (949) 262-9700

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 Ann Mai's NPI number?

The NPI number for Ann Mai is 1215001904. It was assigned to this individual provider in the NPPES registry on November 17, 2006.

Where is Ann Mai located?

Ann Mai practices at 4950 Barranca Pkwy Ste 207, Irvine, CA 92604. The listed phone number is (949) 262-9700.

What is Ann Mai's specialty?

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

Is Ann Mai enrolled in Medicare?

Yes. Ann Mai 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.

When was this NPI record last updated?

The NPPES record for Ann Mai was last updated on August 20, 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.