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JOSEPH MARQUIS MD
NPI 1598084329
Internal Medicine in Oakland, CA

Active since May 18, 2010PECOS EnrolledAccepts Medicare Assignment
2950 INTERNATIONAL BLVD, OAKLAND, CA 94601(510) 535-4400 Get Directions Write a Review

NPPES record last updated: December 17, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 17, 2021, Mar 1, 2016 (2 updates tracked since 2016).

About Joseph Marquis Md NPPES

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

JOSEPH MARQUIS MD (NPI 1598084329) is an individual internal medicine provider in Oakland, California, licensed in California (A127074) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS and is a graduate of Albany Medical College Of Union University (2013).

NPPES Registry Identity

NPI1598084329
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOSEPH MARQUISCredential: MD
Location Address2950 INTERNATIONAL BLVDOakland, CA 94601-2228
Mailing Address2950 International BlvdOakland, CA 94601-2228 · (510) 535-4400
Phone(510) 535-4400
Sole ProprietorNo
Medical School CMSAlbany Medical College Of Union UniversityGraduated 2013
Enumeration DateMay 18, 2010
Last NPPES UpdateDecember 17, 20212 updates tracked since enumeration
✔ NPI 1598084329 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 · A127074
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.
2950 INTERNATIONAL BLVD, Oakland, CA 94601
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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

Joseph Marquis 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 ID9830341148
PECOS Enrollment IDI20140408001154
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 Joseph Marquis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Native American Health Center, Inc
Same address
Federally Qualified Health Center (FQHC)
2950 INTERNATIONAL BLVD
Oakland, CA 94601
  • Reassigned Medicare billing, California enrollment
  • 71 clinicians in this Medicare group
NPI 1619147030 (510) 485-5906
Permanente Medical Group Inc
12 mi
Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1841373800 (415) 833-2200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94601 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$774.96 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

KATHY TUTINO
Dental Hygienist
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 535-4450
COLLEEN MCCULLOUGH FNP
Nurse Practitioner (Family)
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 535-4400
HEIDY SOFIA RAMOS FERNANDEZ RN
Registered Nurse
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 434-5300
SARAH GILSTRAP
Registered Nurse
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 535-4410
CASEY JAKE SMITH
Internal Medicine
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (505) 862-2029
SIMONE MARIE GARRIGUES M.A., L.C.S.W.
Social Worker (Clinical)
2950 INTERNATIONAL BLVD, NATIVE AMERICAN HEALTH CENTER
OAKLAND, CA 94601
Alameda County (510) 535-4400
CRYSTAL HUANG MD
Family Medicine
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 535-4400
KYOUNG WON HAN DDS
Dentist
2950 INTERNATIONAL BLVD
OAKLAND, CA 94601
Alameda County (510) 485-5925

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 Joseph Marquis's NPI number?

The NPI number for Joseph Marquis is 1598084329. It was assigned to this individual provider in the NPPES registry on May 18, 2010.

Where is Joseph Marquis located?

Joseph Marquis practices at 2950 International Blvd, Oakland, CA 94601. The listed phone number is (510) 535-4400.

What is Joseph Marquis's specialty?

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

Is Joseph Marquis enrolled in Medicare?

Yes. Joseph Marquis 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 Joseph Marquis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Marquis reassigns Medicare benefits to 2 organizations: Native American Health Center, Inc (Oakland, CA) and Permanente Medical Group Inc (San Francisco, CA). 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 Joseph Marquis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Joseph Marquis was last updated on December 17, 2021. 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.