CECILLIA TSAO MD
NPI 1821101767
Internal Medicine - Endocrinology, Diabetes & Metabolism in Washington, DC

Active since August 16, 2006PECOS EnrolledAccepts Medicare Assignment
128 M ST NW, WASHINGTON, DC 20001(202) 854-3840(202) 854-3854 Get Directions Write a Review

NPPES record last updated: January 18, 2019. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Cecillia Tsao Md NPPES

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

CECILLIA TSAO MD (NPI 1821101767) is an individual endocrinology, diabetes & metabolism provider in Washington, District Of Columbia, licensed in District Of Columbia (MD034412) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Indiana University School Of Medicine (1988).

NPPES Registry Identity

NPI1821101767
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameCECILLIA TSAOCredential: MD
Location Address128 M ST NWWashington, DC 20001-1205
Mailing Address1150 Varnum St NeWashington, DC 20017-2180 · (202) 854-4069 · Fax (202) 854-7825
Fax(202) 854-3854
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 1988
Enumeration DateAugust 16, 2006
Last NPPES UpdateJanuary 18, 2019
NPI 1821101767 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 DC · MD034412
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.

128 M ST NW, Washington, DC 20001

Other Identifiers 3

Medicaid035300800DC
OtherP00431121DC · Medicare Railroad
Medicaid410695400MD

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

Cecillia Tsao 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 ID6406848811
PECOS Enrollment IDI20040402000862
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

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.
81 services32 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20001 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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.

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 suppliers17 claims17 services$174.29 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 5

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

Nurse Practitioner (Family)
128 M ST NW
WASHINGTON, DC 20001
Psychologist (Clinical Child & Adolescent)
128 M ST NW
WASHINGTON, DC 20001
Nurse Practitioner (Family)
128 M ST NW
WASHINGTON, DC 20001
Family Medicine
128 M ST NW
WASHINGTON, DC 20001
Nurse Practitioner (Family)
128 M ST NW, PERRY FAMILY HEALTH CENTER
WASHINGTON, DC 20001

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 Cecillia Tsao's NPI number?

The NPI number for Cecillia Tsao is 1821101767. It was assigned to this individual provider in the NPPES registry on August 16, 2006.

Where is Cecillia Tsao located?

Cecillia Tsao practices at 128 M St NW, Washington, DC 20001. The listed phone number is (202) 854-3840.

What is Cecillia Tsao's specialty?

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

Is Cecillia Tsao enrolled in Medicare?

Yes. Cecillia Tsao 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 Cecillia Tsao was last updated on January 18, 2019. NPI Profile syncs with the weekly NPPES data releases published by CMS.