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STACEY REBECCA MA MD
NPI 1184155202
Internal Medicine - Allergy & Immunology in Seattle, WA

Active since March 21, 2017PECOS EnrolledAccepts Medicare Assignment
93.09/100
CMS Quality Rating
750 REPUBLICAN ST, SEATTLE, WA 98109(515) 570-6372 Get Directions Write a Review

NPPES record last updated: August 14, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 14, 2023, Jul 25, 2023, Jun 21, 2023 and 1 more (4 updates tracked since 2017).

About Stacey Rebecca Ma Md NPPES

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

STACEY REBECCA MA MD (NPI 1184155202) is an individual allergy & immunology provider in Seattle, Washington, licensed in Washington (MD61459858) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1184155202
Entity TypeIndividualFemale
Primary Taxonomy207RA0201X
Provider Legal NameSTACEY REBECCA MACredential: MD
Location Address750 REPUBLICAN STSeattle, WA 98109-4766
Mailing AddressPo Box 50095Seattle, WA 98145-5095 · (206) 520-5700
Phone(515) 570-6372
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 21, 2017
Last NPPES UpdateAugust 14, 20234 updates tracked since enumeration
NPPES CertifiedAugust 14, 2023
✔ NPI 1184155202 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Allergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207RA0201X
License✔ Licensed in WA · MD61459858
Definition
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
750 REPUBLICAN ST, Seattle, WA 98109
Open in Google Maps ↗

Other Names 1

Former Name (1)Stacey Rebecca Chu Md

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

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

Stacey Rebecca Ma 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 ID446529812
PECOS Enrollment IDI20230731003422
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

2

Medicare enrollment records show Stacey Ma reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Association Of University Physicians
1.4 mi
Anesthesiology
701 5TH AVE, SUITE 700
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • 4,364 clinicians in this Medicare group
NPI 1023041159 (206) 543-6420
University Of Washington
2.4 mi
Oral and Maxillofacial Pathology
1959 NE PACIFIC ST
Seattle, WA 98195
  • Reassigned Medicare billing, Washington enrollment
  • 274 clinicians in this Medicare group
NPI 1104900398 (206) 616-8794

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.

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
33 services11 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.
29 services24 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.
17 services13 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
11 services11 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Washington Medical Ctr

Acute Care Hospitals · Seattle, WA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number500008
Location1959 NE Pacific St Box 356151Seattle, WA 98195 · King County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98109 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
$143.76 typical visit price
range $63.67 – $189.37
Typical copayment $35.94 (range $15.91 – $47.34)
Most-billed visit code 99204
Established Patient
$78.74 typical visit price
range $21.12 – $155.00
Typical copayment $19.68 (range $5.28 – $38.75)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.09/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality73.95
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES

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

MEGAN FENG M.D.
Family Medicine
750 REPUBLICAN ST, BUILDING F, FLOOR 2
SEATTLE, WA 98109
King County (206) 485-9000

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 Stacey Ma's NPI number?

The NPI number for Stacey Ma is 1184155202. It was assigned to this individual provider in the NPPES registry on March 21, 2017. The provider is also known as Stacey Rebecca Chu MD.

Where is Stacey Ma located?

Stacey Ma practices at 750 Republican St, Seattle, WA 98109. The listed phone number is (515) 570-6372.

What is Stacey Ma's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.

Is Stacey Ma enrolled in Medicare?

Yes. Stacey Ma 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 organizations bill Medicare for Stacey Ma's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stacey Ma reassigns Medicare benefits to 2 organizations: The Association Of University Physicians (Seattle, WA) and University Of Washington (Seattle, WA). Each 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 Stacey Ma's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stacey Ma accept?

Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Stacey Ma 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.

Is Stacey Ma affiliated with any hospitals?

According to CMS data, Stacey Ma is affiliated with University Of Washington Medical Ctr.

When was this NPI record last updated?

The NPPES record for Stacey Ma was last updated on August 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.