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MARISSA M WEN MD
NPI 1467999169
Internal Medicine in Lathrop, CA

Active since January 20, 2017PECOS EnrolledAccepts Medicare Assignment
1507 GARDEN FARMS AVE, LATHROP, CA 95330(209) 479-8000 Get Directions Write a Review

NPPES record last updated: January 21, 2022. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Jan 21, 2022, Mar 26, 2021, Jan 20, 2017 (3 updates tracked since 2017).

About Marissa M Wen Md NPPES

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

MARISSA M WEN MD (NPI 1467999169) is an individual internal medicine provider in Lathrop, California, licensed in California (A161459) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Modesto, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1467999169
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMARISSA M WENCredential: MD
Location Address1507 GARDEN FARMS AVELathrop, CA 95330-8292
Mailing Address1507 Garden Farms AveLathrop, CA 95330-8292 · (626) 589-7899
Phone(209) 479-8000
Sole ProprietorYes
Medical School CMSOtherGraduated 2003
Enumeration DateJanuary 20, 2017
Last NPPES UpdateJanuary 21, 20223 updates tracked since enumeration
NPPES CertifiedJanuary 21, 2022
✔ NPI 1467999169 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A161459
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1507 GARDEN FARMS AVE, Lathrop, CA 95330
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Secondary Practice Location 1

Location 14601 Dale RdModesto, CA 95356-9718 · Phone (209) 735-5000

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

Marissa M Wen 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 ID4688083025
PECOS Enrollment IDI20210514000977
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95330 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
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
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.

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 Marissa Wen's NPI number?

The NPI number for Marissa Wen is 1467999169. It was assigned to this individual provider in the NPPES registry on January 20, 2017.

Where is Marissa Wen located?

Marissa Wen practices at 1507 Garden Farms Ave, Lathrop, CA 95330. The listed phone number is (209) 479-8000.

What is Marissa Wen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Marissa Wen enrolled in Medicare?

Yes. Marissa Wen 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 Marissa Wen was last updated on January 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.