Charles Fang, MD
NPI 1326126483 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Fang, MD is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1326126483).
Provider details
- NPI number
- 1326126483
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A81071 (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 · 94 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 565 | 240 |
| Amlodipine Besylate | 427 | 168 |
| Atenolol | 342 | 116 |
| Levothyroxine Sodium | 294 | 109 |
| Lisinopril | 225 | 101 |
| Losartan Potassium | 202 | 89 |
| Tamsulosin Hcl | 177 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2021-12-08
Frequently asked questions
- What is Charles Fang's NPI number?
- Charles Fang's National Provider Identifier (NPI) is 1326126483, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Fang's specialty?
- Charles Fang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Fang located?
- Charles Fang's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Charles Fang's phone number?
- The practice phone number listed in the NPPES registry for Charles Fang is (925) 295-4000.
- Does Charles Fang accept Medicare?
- Charles Fang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Fang's NPI active?
- Yes — Charles Fang's NPI (1326126483) 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.