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DR. ROBERT J MARX MD
NPI 1073576351
General Practice in Los Gatos, CA

Active since April 08, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0686959 · Waiver
14911 NATIONAL AVE, SUITE # 7, LOS GATOS, CA 95032(408) 358-3511(408) 358-0012 Get Directions Write a Review

NPPES record last updated: August 31, 2010. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Robert J Marx Md NPPES

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

DR. ROBERT J MARX MD (NPI 1073576351) is an individual general practice provider in Los Gatos, California, licensed in California (A30254) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through September 19, 2027, and is a graduate of Johns Hopkins University School Of Medicine (1975).

NPPES Registry Identity

NPI1073576351
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. ROBERT J MARXCredential: MD
Location Address14911 NATIONAL AVE, SUITE # 7Los Gatos, CA 95032-2632
Mailing Address14911 National Ave, Suite # 7Los Gatos, CA 95032-2632 · (408) 358-3511 · Fax (408) 358-0012
Phone(408) 358-3511
Fax(408) 358-0012
Sole ProprietorYes
Medical School CMSJohns Hopkins University School Of MedicineGraduated 1975
Enumeration DateApril 8, 2006
Last NPPES UpdateAugust 31, 2010
✔ NPI 1073576351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in CA · A30254
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
14911 NATIONAL AVE, Los Gatos, CA 95032
Open in Google Maps ↗

Other Identifiers 3

OtherA30254CA · State License
Medicare UPINA26022
Medicare ID-Type Unspecified00A302540CA

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. Robert J Marx 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 ID9133243983
PECOS Enrollment IDI20100831000215
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0686959

Robert J Marx MD · Los Gatos, CA
Active · expires Sep 19, 2027
CLIA Number05D0686959
Laboratory TypePhysician Office
Certificate Effective DateSeptember 20, 2025
Certificate Expiration DateSeptember 19, 2027
Laboratory DirectorRobert J. Marx
Laboratory Phone(408) 358-3511
Laboratory LocationRobert J Marx MD14911 National Ave Suite 7, Los Gatos, CA 95032
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 7

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
441 services153 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
99 services99 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
84 services78 patients
Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous G0328
A fecal occult blood test is a screening tool for colorectal cancer. It checks for tiny amounts of blood in your stool that can't be seen with the naked eye. The immunoassay method can test 1-3 samples at once. This helps detect cancer early, when treatment is most effective.
79 services79 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
47 services39 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
43 services43 patients

Other Providers at the Same Location NPPES 13

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

ORTHONORCAL INC
Orthopaedic Surgery
14911 NATIONAL AVE, SUITE 6
LOS GATOS, CA 95032
Santa Clara County (408) 358-2757
EDWARD KERN WONG MD
Internal Medicine
14911 NATIONAL AVE, STE 3
LOS GATOS, CA 95032
Santa Clara County (408) 356-9121
MARY JANE HUTCHINS M.D.
Internal Medicine
14911 NATIONAL AVE, SUITE 6
LOS GATOS, CA 95032
Santa Clara County (408) 358-8998
TERENCE J. DELANEY MD
Specialist
14911 NATIONAL AVE, SUITE 3
LOS GATOS, CA 95032
Santa Clara County (408) 402-5742
JOHN PHILIP SMITH MD
Internal Medicine (Cardiovascular Disease)
14911 NATIONAL AVE, #1
LOS GATOS, CA 95032
Santa Clara County (408) 358-3448
JOHN P SMITH MD A PROFESSIONAL CORPORATION
Internal Medicine (Cardiovascular Disease)
14911 NATIONAL AVE, STE 1
LOS GATOS, CA 95032
Santa Clara County (408) 358-3448
HENRY J. FEE MD MEDICAL CORPORATION
Thoracic Surgery (Cardiothoracic Vascular Surgery)
14911 NATIONAL AVE, SUITE 6
LOS GATOS, CA 95032
Santa Clara County (408) 358-8771
MRS. JANET KAYE MILES AU.D.
Hearing Instrument Specialist
14911 NATIONAL AVE
LOS GATOS, CA 95032
Santa Clara County (408) 356-1999

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 Robert Marx's NPI number?

The NPI number for Robert Marx is 1073576351. It was assigned to this individual provider in the NPPES registry on April 8, 2006.

Where is Robert Marx located?

Robert Marx practices at 14911 National Ave Suite # 7, Los Gatos, CA 95032. The listed phone number is (408) 358-3511.

What is Robert Marx's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Robert Marx enrolled in Medicare?

Yes. Robert Marx 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.

Does Robert Marx hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0686959) is associated with this NPI, valid through September 19, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Robert Marx was last updated on August 31, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.