Active NPI 1073576351 Individual Practitioner Male Practitioner

Dr. Robert J Marx , MD

General Practice • Los Gatos, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Robert Marx, MD is a certified General Practice practicing in Los Gatos, CA. With approximately 51 years of clinical experience since graduating from Johns Hopkins University School Of Medicine in 1975, Dr. Marx delivers high-quality medical care to the local community at 14911 NATIONAL AVE.

Dr. Marx accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, routine ekg using at least 12 leads including interpretation and report. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

14911 National Ave
Suite # 7

Los Gatos, CA 950322632

Telephone 4083583511

Fax 4083580012

Associated Practice Facility / Clinic

🏢 John P Smith Md A Professional Corporation Facility NPI 1548259385

Medicare Profile & Education

Medical School

Johns Hopkins University School Of Medicine

Graduation Year

1975

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for General Practice in Los Gatos, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

51 Yrs Matches City Avg

City Avg: 51.0 Yrs

State Avg: 31.1 Yrs

Regional Practice Density

4 Specialists

Practicing in Los Gatos, CA (2300 Statewide)

Telehealth Adoption Rate

25.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

31.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Marx (51 Years) 51 Yrs

Los Gatos Specialty Average (51.0 Years) 51.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	441	153	$161.20	$104.76
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	99	99	$202.83	$157.31
93000 Routine ekg using at least 12 leads including interpretation and report	84	78	$65.00	$17.68
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	79	79	$44.05	$17.69
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	47	39	$205.32	$151.46
G0008 Administration of influenza virus vaccine	43	43	$55.00	$39.07
90662 Influenza vaccine split virus, preservative free	43	43	$97.21	$81.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	410	146	$135.00	$104.05
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	97	97	$45.00	$17.69
93000 Routine ekg using at least 12 leads including interpretation and report	91	89	$65.00	$17.84
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	83	83	$200.00	$155.90
G0008 Administration of influenza virus vaccine	55	55	$54.91	$36.96
90662 Influenza vaccine split virus, preservative free	55	55	$90.00	$71.87
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	38	$205.00	$147.67
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$210.00	$132.67
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	13	13	$250.00	$197.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	374	141	$135.00	$105.44
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	89	89	$200.06	$158.55
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	87	87	$45.00	$17.83
93000 Routine ekg using at least 12 leads including interpretation and report	85	82	$65.00	$17.60
90662 Influenza vaccine split virus, preservative free	70	69	$89.71	$68.45
G0008 Administration of influenza virus vaccine	70	69	$50.00	$37.25
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	32	$205.00	$145.22
G0009 Administration of pneumococcal vaccine	20	20	$50.00	$37.72
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$200.00	$132.91
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	12	12	$250.00	$200.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	330	143	$129.86	$107.19
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	88	88	$45.00	$18.05
93000 Routine ekg using at least 12 leads including interpretation and report	76	75	$65.00	$18.37
G0008 Administration of influenza virus vaccine	74	74	$50.00	$21.61
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	74	74	$200.00	$161.20
90662 Influenza vaccine split virus, preservative free	73	73	$80.00	$65.26
G0009 Administration of pneumococcal vaccine	29	29	$50.00	$21.49
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	24	23	$194.92	$153.95
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	20	20	$195.00	$124.42
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	17	17	$250.00	$202.94
81002 Urinalysis, manual test	17	13	$12.00	$3.48
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	12	12	$250.00	$203.42

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	323	145	$120.00	$82.73
G0008 Administration of influenza virus vaccine	95	95	$50.00	$20.92
90662 Influenza vaccine split virus, preservative free	94	94	$76.81	$60.92
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	89	89	$45.00	$17.93
93000 Routine ekg using at least 12 leads including interpretation and report	78	77	$65.00	$21.25
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	55	55	$200.00	$141.23
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	19	19	$250.00	$206.90
G0009 Administration of pneumococcal vaccine	19	19	$50.00	$20.84
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	15	15	$250.00	$200.29
90670 Pneumococcal vaccine for injection into muscle	13	13	$277.31	$224.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	11	11	$183.00	$128.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	296	140	$120.00	$86.61
90662 Influenza vaccine split virus, preservative free	105	104	$70.00	$54.74
G0008 Administration of influenza virus vaccine	105	104	$50.00	$20.51
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	80	80	$45.00	$17.69
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	61	61	$200.00	$133.52
93000 Routine ekg using at least 12 leads including interpretation and report	49	48	$65.00	$20.28
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	15	$82.00	$53.98
G0009 Administration of pneumococcal vaccine	13	13	$45.38	$20.51
81002 Urinalysis, manual test	13	11	$12.00	$3.41
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	12	$183.00	$124.99
90670 Pneumococcal vaccine for injection into muscle	13	13	$260.00	$208.71
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$250.00	$188.06

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	299	133	$120.00	$81.30
G0008 Administration of influenza virus vaccine	114	111	$49.65	$25.50
90662 Influenza vaccine split virus, preservative free	113	110	$69.65	$51.54
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	75	75	$42.33	$19.25
93000 Routine ekg using at least 12 leads including interpretation and report	61	61	$65.00	$19.64
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	30	30	$200.00	$132.09
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	23	22	$82.00	$50.75
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	20	17	$185.55	$121.11
81002 Urinalysis, manual test	14	11	$12.00	$3.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	290	135	$120.00	$81.55
90662 Influenza vaccine split virus, preservative free	126	117	$65.00	$47.36
G0008 Administration of influenza virus vaccine	125	116	$45.00	$32.29
G0328 Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous	70	70	$40.07	$21.38
93000 Routine ekg using at least 12 leads including interpretation and report	63	62	$65.00	$19.46
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	32	26	$82.00	$49.90
81002 Urinalysis, manual test	22	18	$12.00	$3.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	19	$183.00	$119.36
90670 Pneumococcal vaccine for injection into muscle	16	16	$225.00	$185.24
G0009 Administration of pneumococcal vaccine	16	16	$45.00	$32.29

Medical Specialties & State Licenses

General Practice Primary Specialty

NUCC Taxonomy Code: 208D00000X

State License CA A30254

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.

Additional State Medicaid & Healthcare Payer Identifiers

Commercial Insurance / Payer ID State License

A30254 (CA)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners

Kathleen Baker , RN

Registered Nurse - General Practice

NPI 1639850241

Registered Nurse

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active August 31, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location August 31, 2010

Registered at 14911 NATIONAL AVE, SUITE # 7, LOS GATOS, CA 950322632 (Tel: 4083583511)

📍

Updated Business Mailing Address August 31, 2010

Registered at 14911 NATIONAL AVE, SUITE # 7, LOS GATOS, CA 950322632 (Tel: 4083583511)

👤

Provider Name / Credentials Updated August 31, 2010

Recorded as ROBERT MARX, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 31, 2010

General Practice (License #A30254 in CA)

🟢

Initial NPI Registration & Enumeration April 08, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1073576351

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: April 08, 2006

Last Update: August 31, 2010

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

14911 National Ave, Suite # 7

Los Gatos, CA 950322632

Phone: 4083583511

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.