Medicared For All Logo

John Clarke in Redwood City, California

Home California Redwood City

John Clarke has Gastroenterology as his primary medical specialty. Their primary office is: 420 Broadway St in Redwood City, California. There are 3 additional office locations for John Clarke that can be viewed towards the end of their profile.

They're a part of the: Stanford Health Care medical group which has around 2,603 members. You can call their office at 650-723-4000 to schedule an appointment. They also accept the Medicare-approved amount as payment in full. They attended University Of Missouri, Columbia School Of Medicine and graduated in 1999 (around 25 years of experience). They are listed as doing telehealth appointments.


John O'brien Clarke Office Phone and Directions

John Clarke
Stanford Health Care
420 Broadway St
Redwood City, California 94063
650-723-4000


Patient Ratings
Please rate your experience with John Clarke below to help others make a more informed decision. Thanks!
Current Rating: Loading...

Phone: 650-723-4000


Enter a starting address:


Healthcare Info for John Clarke

Medical School: University Of Missouri, Columbia School Of Medicine
Graduation Year: 1999
The Primary Medical Specialty for John Clarke is listed as: Gastroenterology
Approximate Years of Experience: 25
PAC (PECOS ID)#: 2264523398
NPI #: 1467539643
NPI Created On: 11/01/2006
NPI Last Updated Listed as: 10/04/2019
Primary Taxonomy Code: 207R00000X
License Number:
C143081
Listed Gender: Male

Insurance, Services, Charges


Forms of insurance accepted by include, but are not limited to:

  • Humana
  • Medicare

They are listed as accepting new patients.

Languages spoken by staff include: English.


Services and Procedures include:

  1. Injections of esophagus, stomach, and/or upper small bowel using an endoscope
  2. Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope
  3. Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope
  4. Insertion of catheter or tube in esophagus stomach and/or upper small bowel using an endoscope
  5. Balloon dilation of esophagus using an endoscope
  6. Balloon dilation of esophagus using an endoscope
  7. Biopsy of large bowel using an endoscope
  8. Biopsy of large bowel using an endoscope
  9. Removal of polyps or growths of large bowel using an endoscope
  10. Measurement of esophageal swallowing movement
  11. Monitoring and recording of gastroesophageal reflux with ph electrode insertion including analysis and interpretation
  12. Monitoring of gastroesophageal reflux including analysis and interpretation
  13. Monitoring of gastroesophageal reflux including analysis and interpretation, prolonged (greater than 1 hour, up to 24 hours)
  14. Evaluation of non-cardiac chest pain using esophageal balloon
  15. Evaluation of non-cardiac chest pain using esophageal balloon
  16. Measurement of hydrogen in breath to test for gi symptoms
  17. New patient office or other outpatient visit, typically 45 minutes
  18. Established patient office or other outpatient, visit typically 25 minutes
  19. Established patient office or other outpatient, visit typically 40 minutes
  20. Subsequent hospital inpatient care, typically 25 minutes per day

They took part in Medicare's Electronic Health Record Incentive Program which was designed to help move people over to electronic records and improve the systems that were already in place.
They took part in the Medicare Physician Quality Reporting System (PQRS).

Open Payments Data. This can include items to test (Durable Medical Equipment (DME)), Biological, Drug Samples, etc. This data must be reported to CMS.


Payments Total: $47

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 827341135

Being Disputed:: No

Product Related: Yes

Drug or Biological: Device

Product Category #1: Gastrointestinal AI

Name of Drug #1: GI Genius


Payments Total: $149

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 815704665

Being Disputed:: No

Product Related: Yes

Drug or Biological: Device

Product Category #1: Esophageal Treatment

Name of Drug #1: EsoFlip


Payments Total: $8

Number of Payments:: 1

Form of Payment: In-kind items and services

Record ID:: 838675795

Being Disputed:: No

Product Related: Yes

Drug or Biological: Device

Product Category #1: Gastrointestinal AI

Name of Drug #1: GI Genius


Payments Total: $1,791

Number of Payments:: 1

Form of Payment: Cash or cash equivalent

Record ID:: 843568127

Being Disputed:: No

Product Related: Yes

Drug or Biological: Biological

Product Category #1: Immunology

Name of Drug #1: DUPIXENT

Open Associated Drug #1: 0024-5914-01


Payments Total: $1,493

Number of Payments:: 1

Form of Payment: Cash or cash equivalent

Record ID:: 843568187

Being Disputed:: No

Product Related: Yes

Drug or Biological: Biological

Product Category #1: Immunology

Name of Drug #1: DUPIXENT

Open Associated Drug #1: 0024-5914-01


Payments Total: $3,500

Number of Payments:: 1

Form of Payment: Cash or cash equivalent

Third Party:: MAYO CLINIC ROCHESTER

Third party is a Charity:: No

Record ID:: 833590089

Being Disputed:: No

Product Related: No


Additional Office Locations

1. Stanford Health Care
450 Broadway St
Redwood City, CA 94063
Group Members: 2,603

Phone: 650-723-4000

Enter a starting address:


2. Stanford Health Care
300 Pasteur Dr
Stanford, CA 94305
Group Members: 2,603

Phone: 650-723-4000

Enter a starting address:


3. Stanford Health Care
5800 Hollis St
Emeryville, CA 94608
Group Members: 2,603

Phone: 650-723-4000

Enter a starting address:


Gastroenterology Professionals in Redwood City

1100 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

1150 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

1190 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

1100 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

1150 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

1190 Veterans Blvd
Redwood-city, CA
Permanente Medical Group Inc

Providers in Stanford Health Care

1.Oliver Aalami

300 Pasteur Dr
Stanford Ca 94305-2200
Stanford Health Care
Vascular Surgery

2.Sumaira Aasi

420 Broadway St
Redwood City Ca 94063-3132
Stanford Health Care
Dermatology

3.Sumaira Aasi

450 Broadway St
Redwood City Ca 94063-3132
Stanford Health Care
Dermatology

4.Sumaira Aasi

300 Pasteur Dr
Stanford Ca 94305-2200
Stanford Health Care
Dermatology

5.Fahim Abbasi

300 Pasteur Dr
Stanford Ca 94305-2200
Stanford Health Care
Internal Medicine

6.Steven Abboud

300 Pasteur Dr
Stanford Ca 94305-2200
Stanford Health Care
Anesthesiology

View all 2,603 members of Stanford Health Care medical group