Fang Guo, MD
NPI 1598843401 · Internal Medicine Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fang Guo, MD is a Internal Medicine Physician provider in Stockton, CA (NPI 1598843401).
Provider details
- NPI number
- 1598843401
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A79678 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 85 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 388 | 152 |
| Losartan Potassium | 196 | 82 |
| Amlodipine Besylate | 184 | 76 |
| Lisinopril | 154 | 61 |
| Levothyroxine Sodium | 153 | 59 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 137 | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-08
Frequently asked questions
- What is Fang Guo's NPI number?
- Fang Guo's National Provider Identifier (NPI) is 1598843401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fang Guo's specialty?
- Fang Guo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Fang Guo located?
- Fang Guo's practice location on file with NPPES is 7373 West Ln, Stockton, CA 95210-3377.
- What is Fang Guo's phone number?
- The practice phone number listed in the NPPES registry for Fang Guo is (209) 476-2000.
- Does Fang Guo accept Medicare?
- Fang Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fang Guo's NPI active?
- Yes — Fang Guo's NPI (1598843401) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.