Fang Guo, MD
Internal Medicine Physician · Stockton, CA
Fang Guo, MD is an internal medicine physician with a practice address in Stockton, California, and NPI 1598843401, issued on Nov 1, 2006. Check the license (California A79678, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fang Guo
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A79678 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7373 West LN, Stockton, CA 95210
- Phone
- (209) 476-2000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A796780 CA
- Medicare enrollment
- Enrolled (PECOS I20090609000642); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 7373 West LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fang Guo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79678Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% more Medicare Part D claims than the average internal medicine physician in 2024
4,610 Medicare Part D claims for 606 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 196 claims were for opioids.
Most prescribed
- Atorvastatin Calcium388 claims
- Losartan Potassium196 claims
- Amlodipine Besylate184 claims
- Lisinopril154 claims
- Levothyroxine Sodium153 claims
- Hydrocodone-Acetaminophen137 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fang Guo among 17,696 internal medicine physician records in California
Fang Guo, 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. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1990 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
89 internal medicine physician records list a practice address in Stockton
They are 89 of the 9,522 NPPES records with a practice address in Stockton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Stockton → Internal Medicine Physician nationwide →
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Common questions
What is Fang Guo, MD's NPI number?
Fang Guo, MD's National Provider Identifier (NPI) is 1598843401, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Fang Guo, MD located?
The NPPES record lists a practice address at 7373 West LN, Stockton, CA, 95210. Phone: (209) 476-2000. Providers update this record themselves, so call before visiting.
How can I verify Fang Guo, MD's license?
NPPES lists California license number A79678, 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.
How much does Fang Guo, MD prescribe under Medicare Part D?
In 2024, Fang Guo, MD had 4,610 Medicare Part D claims for 606 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.