DR. KAREN NGUYEN WU M.D.
NPI 1245441310
Pathology - Dermatopathology in Portsmouth, NH

Active since May 24, 2007PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
111 NEW HAMPSHIRE AVE STE 3, PORTSMOUTH, NH 03801(603) 988-0951(603) 441-3722 Get Directions Write a Review

NPPES record last updated: January 31, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Karen Nguyen Wu M.d. NPPES

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

DR. KAREN NGUYEN WU M.D. (NPI 1245441310) is an individual dermatopathology provider in Portsmouth, New Hampshire, licensed in New Hampshire (16057) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1245441310
Entity TypeIndividualFemale
Primary Taxonomy207ZD0900X
Provider Legal NameDR. KAREN NGUYEN WUCredential: M.D.
Location Address111 NEW HAMPSHIRE AVE STE 3Portsmouth, NH 03801-2864
Mailing Address111 New Hampshire Ave Ste 2Portsmouth, NH 03801-2864 · (802) 909-2053
Fax(603) 441-3722
Sole ProprietorYes
Medical School CMSOtherGraduated 2006
Enumeration DateMay 24, 2007
Last NPPES UpdateJanuary 31, 2024
NPPES CertifiedJanuary 31, 2024
NPI 1245441310 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPathology · DermatopathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZD0900X
License Licensed in NH · 16057
Definition
A dermatopathologist is an expert in diagnosing and monitoring diseases of the skin including infectious, immunologic, degenerative, and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings, and smears of skin lesions by means of light microscopy, electron microscopy, and fluorescence microscopy.
Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X · License MD438668 (PA)
111 NEW HAMPSHIRE AVE STE 3, Portsmouth, NH 03801

Accepted Insurance

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

Dr. Karen Nguyen Wu M.d. 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 ID3375783996
PECOS Enrollment IDI20130702000633
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 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.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
5,174 services3,420 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
163 services147 patients
Pathology examination of tissue using a microscope, moderately low complexity 88304
A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.
149 services144 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
23 services20 patients
Pathology examination of tissue using a microscope, limited examination 88300
A pathology examination of tissue using a microscope is a procedure where a small sample of your tissue is observed under a microscope. This limited examination helps identify any abnormal cells or signs of disease, aiding in accurate diagnosis and treatment planning.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03801 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
$132.09 typical visit price
range $57.75 – $174.26
Typical copayment $33.02 (range $14.43 – $43.56)
Most-billed visit code 99204
Established Patient
$101.54 typical visit price
range $18.70 – $142.15
Typical copayment $25.38 (range $4.67 – $35.53)
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.

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 3

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

Dermatology (Dermatopathology)
111 NEW HAMPSHIRE AVE STE 3
PORTSMOUTH, NH 03801
Pathology (Anatomic Pathology & Clinical Pathology)
111 NEW HAMPSHIRE AVE STE 3
PORTSMOUTH, NH 03801
Pathology (Anatomic Pathology & Clinical Pathology)
111 NEW HAMPSHIRE AVE STE 3
PORTSMOUTH, NH 03801

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 Karen Wu's NPI number?

The NPI number for Karen Wu is 1245441310. It was assigned to this individual provider in the NPPES registry on May 24, 2007.

Where is Karen Wu located?

Karen Wu practices at 111 New Hampshire Ave Ste 3, Portsmouth, NH 03801. The listed phone number is (603) 988-0951.

What is Karen Wu's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Dermatopathology, with taxonomy code 207ZD0900X.

Is Karen Wu enrolled in Medicare?

Yes. Karen Wu 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.

What insurance does Karen Wu accept?

Health plans from CareSource and WellSense Health Plan list Karen Wu 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.

When was this NPI record last updated?

The NPPES record for Karen Wu was last updated on January 31, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.