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MARY WANG MD
NPI 1669564811
Internal Medicine in Rowland Heights, CA

Active since September 28, 2006PECOS EnrolledAccepts Medicare Assignment
18395 COLIMA RD, ROWLAND HEIGHTS, CA 91748(626) 964-1120(626) 964-0590 Get Directions Write a Review

NPPES record last updated: February 9, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mary Wang Md NPPES

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

MARY WANG MD (NPI 1669564811) is an individual internal medicine provider in Rowland Heights, California, licensed in California (A61785) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1991).

NPPES Registry Identity

NPI1669564811
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMARY WANGCredential: MD
Location Address18395 COLIMA RDRowland Heights, CA 91748-2749
Mailing Address1118 S Garfield Ave, 201Alhambra, CA 91801-4713 · (626) 281-0090 · Fax (626) 281-0261
Phone(626) 964-1120
Fax(626) 964-0590
Sole ProprietorYes
Medical School CMSOtherGraduated 1991
Enumeration DateSeptember 28, 2006
Last NPPES UpdateFebruary 9, 2012
✔ NPI 1669564811 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 · A61785
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.
18395 COLIMA RD, Rowland Heights, CA 91748
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Wang 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 ID9739113580
PECOS Enrollment IDI20110518000734
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 Reassignment

Medicare enrollment records show Mary Wang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Liu & Wang Medical Corp
1.2 mi
Internal Medicine
19267 COLIMA RD STE I
Rowland Heights, CA 91748
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1679676779 (626) 964-1120

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

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.
711 services155 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
94 services94 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.
93 services93 patients
Insertion of needle into vein (3 years or older) 36410
This procedure involves placing a small needle into a vein, typically in the arm. It's done to collect blood for testing or to deliver medication. You may feel a quick pinch, but it's usually over in seconds. It's a common, safe procedure.
91 services59 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
87 services87 patients
Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes G0446
This is a yearly, personal consultation focused on behaviors affecting heart health. It lasts 15 minutes and may cover topics like diet, exercise, and stress management. It's about learning healthy habits to protect your heart.
87 services87 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91748 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
7 suppliers17 claims51 services$5.82 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.

JIAMIN LIN NP
Nurse Practitioner (Family)
18395 COLIMA RD
ROWLAND HEIGHTS, CA 91748
Los Angeles County (626) 328-8811
ZUNE HOU LIU MD
Internal Medicine
18395 COLIMA RD
ROWLAND HEIGHTS, CA 91748
Los Angeles County (626) 964-1120

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 Mary Wang's NPI number?

The NPI number for Mary Wang is 1669564811. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Where is Mary Wang located?

Mary Wang practices at 18395 Colima Rd, Rowland Heights, CA 91748. The listed phone number is (626) 964-1120.

What is Mary Wang's specialty?

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

Is Mary Wang enrolled in Medicare?

Yes. Mary Wang 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.

Which organization bills Medicare for Mary Wang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Wang reassigns Medicare benefits to Liu & Wang Medical Corp (Rowland Heights, CA). The 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 Mary Wang'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 Mary Wang was last updated on February 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.