National Provider Identifier Database

HOWARD C MASUOKA, MD – NPI #1770630162
Gastroenterology

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.


Contact Information

HOWARD C MASUOKA, MD
300 PASTEUR DR
STANFORD, CA94305-2200
Phone: 650-723-4000
Fax:
Website:
Specialty Taxonomy Code
* Gastroenterology 207RG0100X
Internal Medicine 207R00000X
Transplant Hepatology 207RT0003X

* Indicates primary specialty

NPI Profile & details for HOWARD C MASUOKA

NPI Number 1770630162
Credentials MD
Entity Individual
Enumeration date 01/05/2007
Last updated 02/06/2025 - More than a year ago
Sole proprietor1 No
Identifiers
  • CA License #: C184254
  • IN License #: 01069938A
  • IN Medicaid: 201029030
  • MN Medicaid: 440002000
  • IN Other: 000000725536 ANTHEM PTAN
  • IN Other: P01047076 RAILROAD PTAN
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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