MS. MAREN M CHAN M.D.
NPI 1881772283
Pathology - Anatomic Pathology & Clinical Pathology in San Antonio, TX

Active since November 02, 2006PECOS EnrolledAccepts Medicare Assignment
79.62/100
CMS Quality Rating
8534 VILLAGE DR, SAN ANTONIO, TX 78217(617) 319-6667 Get Directions Write a Review

NPPES record last updated: June 10, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Ms. Maren M Chan M.d. NPPES

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

MS. MAREN M CHAN M.D. (NPI 1881772283) is an individual anatomic pathology & clinical pathology provider in San Antonio, Texas, licensed in Texas (N8771) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Washington School Of Medicine (2001).

NPPES Registry Identity

NPI1881772283
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameMS. MAREN M CHANCredential: M.D.
Location Address8534 VILLAGE DRSan Antonio, TX 78217-5501
Mailing Address9225 Marymont ParkSan Antonio, TX 78217 · (617) 319-6667
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2001
Enumeration DateNovember 2, 2006
Last NPPES UpdateJune 10, 2021
NPPES CertifiedJune 10, 2021
NPI 1881772283 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License Licensed in TX · N8771
Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Also ListedPathology · DermatopathologyTaxonomy 207ZD0900X · License N8771 (TX)
8534 VILLAGE DR, San Antonio, TX 78217

Other Names 1

Former Name (1)Dr. Maren M Twedt M.d.

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

Ms. Maren M Chan 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 ID3779712906
PECOS Enrollment IDI20140210000471
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.
7,388 services3,175 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.
325 services193 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.
256 services221 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.
201 services187 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
61 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78217 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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.

79.62/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality81.83
Promoting Interoperability93
Improvement Activities40
Cost56.08

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.

Surgery
8534 VILLAGE DR, SUITE B
SAN ANTONIO, TX 78217
Dermatology
8534 VILLAGE DR
SAN ANTONIO, TX 78217
Surgery
8534 VILLAGE DR, SUITE E
SAN ANTONIO, TX 78217

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 Maren Chan's NPI number?

The NPI number for Maren Chan is 1881772283. It was assigned to this individual provider in the NPPES registry on November 2, 2006. The provider is also known as Dr. Maren M Twedt M.D..

Where is Maren Chan located?

Maren Chan practices at 8534 Village Dr, San Antonio, TX 78217. The listed phone number is (617) 319-6667.

What is Maren Chan's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Maren Chan enrolled in Medicare?

Yes. Maren Chan 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 Maren Chan accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Maren Chan 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 Maren Chan was last updated on June 10, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.