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Edit this profileAt a glance
- 14911 National Ave, Suite # 7, Los Gatos, CA 95032
About Dr. Marx
Robert J. Marx, MD is a healthcare provider in Los Gatos, CA specializing in general practice. Robert trained at Johns Hopkins University School of Medicine, graduating in 1975. Medicare claims data shows Robert provided 836 services to 534 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report. This provider record is associated with NPI 1073576351.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (408) 358-3511
- Email not available
Practice Locations
14911 NATIONAL AVE SUITE # 7
Los Gatos, CA 95032
Conditions Commonly Evaluated or Treated
Within General Practice generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Blood disorders
- Anemia
Bone health
Brain & Nerves
Digestive Health
- Acid reflux
- Constipation
- Viral gastroenteritis
Digestive health
- Food Poisoning
- Hemorrhoids
- IBS
Ear, Nose & Throat
Endocrine
- Hyperthyroidism
Eye Care
Foot & Ankle
General Health
Heart & Circulation
Infections
Joint & Muscle
Lungs & Breathing
Men's Health
Mental Health
Pain
Pain & Joints
Skin
Skin & Hair
Sleep
Urinary & Kidney
Weight & Metabolism
Women's Health
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Dermatology
Diagnostic testing
- Diabetes Screening and A1C Test
- Heart monitor
- Spirometry
Ear, Nose & Throat
Exams & Clearances
- DOT Physical
- Pre-Op Clearance Exam
- Sports physical
Heart & Circulation
Hormone therapy
- Hormone replacement therapy
Infections & Screening
- Cholesterol Check
- COVID-19 testing
- STI Testing
- Urine Drug Screen
Injections
- Antibiotic Injection
Lab tests
- Rapid flu test
- Rapid Mono Test
- Rapid strep testing
- Urinalysis
- Vaccine Titer Test
Lungs & Breathing
Men's Health
- Prostate exam
Mental health
- Mental Health Evaluation
Minor Surgery
- Incision and drainage of an abscess
- Ingrown toenail removal
- Mole removal
- Skin Tag Removal
- Superficial foreign-body removal
- Wart Removal
Pain & Injections
Pain & Joints
- Splinting of minor injuries
Pain management
Physical exams
- Daycare Physical
Prescriptions & Medications
- Prescription Refill
Preventive care
- Colon cancer screening consult
Preventive Care
Sleep
- At-Home Sleep Study Ordering
Vaccines
- HPV vaccine
- Routine Vaccines
- Shingles And Senior Vaccinations
- Tetanus shot
- Travel vaccines
Weight & Metabolism
- Weight loss medication consult
Women's Health
- Birth control counseling
- Depo Shot
- IUD Removal
- Pap smear
- Pelvic exam
- Pregnancy Confirmation Test
Wound Care
- Burn and Wound Care
- Minor laceration repair
- Suture removal
Procedures Most Often Billed to Medicare
836 services · 534 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
84 | More often than most peers in General Practice |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
43 | As often as other peers in General Practice |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
441 | More than most peers in General Practice |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
99 | More often than most peers in General Practice |
| Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous | Billing code | G0328 |
79 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
47 | As often as other peers in General Practice |
| Administration of influenza virus vaccine | Billing code | G0008 |
43 | More often than most peers in General Practice |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Johns Hopkins University School of Medicine 4
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1975 at Johns Hopkins University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Marx?
Dr. Marx is a general practitioner in Los Gatos, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “General Practice”.
NPI registry
What is Dr. Marx's address?
Dr. Marx is listed at 14911 National Ave Suite # 7, Los Gatos, CA 95032. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Marx?
The number on file is (408) 358-3511. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Marx?
Dr. Marx's National Provider Identifier is 1073576351. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Marx train?
Dr. Marx attended Johns Hopkins University School of Medicine, graduating in 1975. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Marx have?
Dr. Marx has 51 years experience. Calculated from a graduation year of 1975, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Marx perform?
According to Medicare billing data, Dr. Marx provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Marx's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marx. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.