AILEEN WANG
NPI 1801167887
Internal Medicine - Endocrinology, Diabetes & Metabolism in Greenbrae, CA

Q: What is Aileen Wang's NPI number?

The NPI number for Aileen Wang is 1801167887. It was assigned to this individual provider in the NPPES registry on January 23, 2012.

Q: What is Aileen Wang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Aileen Wang was last updated on September 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.

Active since January 23, 2012PECOS Enrolled

900 S ELISEO DR STE 201, GREENBRAE, CA 94904(415) 461-1780(415) 461-7378 Get Directions Write a Review

NPPES record last updated: September 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Aileen Wang NPPES

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

AILEEN WANG (NPI 1801167887) is an individual endocrinology, diabetes & metabolism provider in Greenbrae, California, licensed in California (A131136) and active in the NPI registry since January 2012. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1801167887

Entity TypeIndividualFemale

Primary Taxonomy207RE0101X

Provider Legal NameAILEEN WANG

Location Address900 S ELISEO DR STE 201Greenbrae, CA 94904-2153

Mailing Address100 Wilson Rd Ste 100Monterey, CA 93940-7885 · (831) 649-1000

Phone(415) 461-1780

Fax(415) 461-7378

Sole ProprietorNo

Medical School CMSOtherGraduated 2009

Enumeration DateJanuary 23, 2012

Last NPPES UpdateSeptember 25, 2025

NPPES CertifiedSeptember 25, 2025

✔ NPI 1801167887 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in CA · A131136

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

900 S ELISEO DR STE 201, Greenbrae, CA 94904

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Secondary Practice Locations 2

Location 1355 Abbott St Ste 200Salinas, CA 93901-4483 · Phone (831) 422-3636 · Fax (831) 422-1255

Location 28268 164th St, N buildingJamaica, NY 11432-1121 · Phone (718) 883-3000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aileen Wang is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1355663972

PECOS Enrollment IDI20141209001387

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 Reassignments

Medicare enrollment records show Aileen Wang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Univ Of California Ucsf

13 mi

Internal Medicine

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
339 clinicians in this Medicare group

NPI 1124439807 (415) 476-1000

Hazel Hawkins Memorial Hospital

99 mi

General Acute Care Hospital

911 SUNSET DR
Hollister, CA 95023

Reassigned Medicare billing, California enrollment
73 clinicians in this Medicare group

NPI 1275578817 (831) 637-5711

Svmhs Clinics

101 mi

Multi-Specialty

505 E ROMIE LN STE A
Salinas, CA 93901

Reassigned Medicare billing, California enrollment
310 clinicians in this Medicare group

NPI 1093158347 (831) 755-1701

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 5

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.

198 services105 patients

Blood glucose (sugar) test performed by hand-held instrument 82962

A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.

157 services78 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.

99 services99 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

92 services59 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

26 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 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

$154.04 typical visit price

range $69.07 – $202.63

Typical copayment $38.51 (range $17.26 – $50.65)

Most-billed visit code 99204

Established Patient

$119.61 typical visit price

range $23.44 – $166.64

Typical copayment $29.90 (range $5.86 – $41.66)

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 4

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

9 suppliers101 claims290 services$5.91 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

7 suppliers60 claims96 services$1.01 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

2 suppliers192 claims192 services$183.34 avg. paid by Medicare

Receiver (monitor), dedicated, for use with therapeutic glucose continuous monitor system K0554

DME-Other DME · category DE017N

1 supplier11 claims11 services$205.21 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 6

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

DR. MARISELA MARISA NOORHASAN M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)