Hong Gu, MD
Internal Medicine Physician · Mountain View, CA
Hong Gu, MD is an internal medicine physician with a practice address in Mountain View, California, and NPI 1205908027, issued on Nov 15, 2006. Check the license (California A67285, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Hong Gu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A67285 CA
Self-reported in NPPES; status is on the state search - Practice location
- 555 Castro St, Mountain View, CA 94041
- Phone
- (650) 903-2716
- Enumerated
- Nov 15, 2006
- Record last updated
- Jan 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 00A672850 CA
- Entity
- Type 1 · individual
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Verify Hong Gu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A67285Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Hong Gu among 17,696 internal medicine physician records in California
Hong Gu, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 internal medicine physician records list a practice address in Mountain View
They are 119 of the 2,467 NPPES records with a practice address in Mountain View, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in Mountain View → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Liteh Chang, MDMountain View, CA 940411255418190
- Arleen Chang, MDMountain View, CA 940411679650501
- Karunasree Cherukuri, MDMountain View, CA 940411831276781
- Sandy Chun, MDMountain View, CA 940411144307083
- Sonali Gotmare, MDMountain View, CA 940411346327285
- George Greenwald, MDMountain View, CA 940411952451767
- Susie Jang, MDMountain View, CA 940411871554022
- Alfred Lerner, MDMountain View, CA 940411447337399
Common questions
What is Hong Gu, MD's NPI number?
Hong Gu, MD's National Provider Identifier (NPI) is 1205908027, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hong Gu, MD located?
The NPPES record lists a practice address at 555 Castro St, Mountain View, CA, 94041. Phone: (650) 903-2716. Providers update this record themselves, so call before visiting.
How can I verify Hong Gu, MD's license?
NPPES lists California license number A67285, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.