NANCY WU (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1609895358

NANCY WU (M.D.) is a healthcare provider. based in Laguna niguel, California. specializing in PATHOLOGY. They hold the professional credentials M.D.. They hold a License No. A02900 (CA). The NPI Number for NANCY WU (M.D.) is 1609895358

Main info

Female
35 Years Of Experience
Accepts Medicare Assignment
Name
NANCY WU (M.D.)
NPI
1609895358
Phone
(949) 643-3345
Address
PO BOX 7630
Enumeration Date
19 July 2006
Last Update Date
31 March 2009

Doctor Profile

Medical School Name
OTHER
Secondary Phone
6265705752
Graduation Year
1991 (35 years ago)
PAC ID
9638065105
Group Practice PAC ID
5597678805
Professional Enrollment ID
I20040223001285
Address ID
CA917544716MO900XXBLVD401
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience61
Completeness75
Years active:19State licenses:2Digital endpointsOther names

1,584 PATHOLOGY in CA

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Provider Addresses for NANCY WU (M.D.)

  • Laguna Niguel Post Office, 2991, Niguel Road, Laguna Niguel, Orange County, California, 92607, United States

    LAGUNA NIGUEL, CA 926077630

    Phone: (949) 643-3345

    Fax: (949) 643-3560

    Type: Mailing

  • Pomona Valley Hospital Medical Center, 1798, North Garey Avenue, Pomona, Los Angeles County, California, 91767, United States

    POMONA, CA 917672918

    Phone: (949) 643-3345

    Fax: (949) 643-3560

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $19.

Total Amount is formed as General ($19) + Research ($0) + Ownership ($0) = $19.

Last reported payment date: 2024-10-01 • Largest payer in this snapshot: Almatica Pharma LLC ($19).

Total Amount

$19

General + Research + Ownership

Payments

1

Total payment records

General Amount

$19

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-10-01

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
Almatica Pharma LLC$19
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2004-02-23

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20040223001285IPathologyCATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 92607)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5597678805View full group profile
NameSpecialtyState
P A T H O L O G YCA
-CA
P A T H O L O G YCA
-CA
P A T H O L O G YCA
P A T H O L O G YCA
P A T H O L O G YCA
P A T H O L O G YCA

Reviews

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Frequently asked questions

What unique ID ties claims to NANCY WU (M.D.)?
NPI 1609895358 is assigned to NANCY WU (M.D.) under the national enumeration system.
Is NANCY WU (M.D.) currently active in the NPI registry?
CMS-published data lists NANCY WU (M.D.) as an active registrant.
Does NANCY WU (M.D.) list a primary specialty?
If you are matching referrals, note Anatomic Pathology & Clinical Pathology Physician for NANCY WU (M.D.). Clinical services aligned with this taxonomy classification.
Where is NANCY WU (M.D.)'s primary listing?
We display Laguna Niguel, California because that is what the record indicates for NANCY WU (M.D.).
Is this NPI for an individual or an organization?
This listing corresponds to an Individual Provider.

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