Derek Fong, MD
NPI 1497876247 · Gastroenterology Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Fong, MD is a Gastroenterology Physician provider in Harbor City, CA (NPI 1497876247).
Provider details
- NPI number
- 1497876247
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 222058 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 291 | 281 |
| Omeprazole | 251 | 104 |
| Pantoprazole Sodium | 113 | 39 |
| Mesalamine | 45 | 13 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 23 | 13 |
| Ondansetronbrand: Ondansetron Odt | 23 | — |
| Carvedilol | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-02
- Last updated
- 2021-11-18
Frequently asked questions
- What is Derek Fong's NPI number?
- Derek Fong's National Provider Identifier (NPI) is 1497876247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Fong's specialty?
- Derek Fong is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Fong located?
- Derek Fong's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is Derek Fong's phone number?
- The practice phone number listed in the NPPES registry for Derek Fong is (800) 780-1230.
- Does Derek Fong accept Medicare?
- Derek Fong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Fong's NPI active?
- Yes — Derek Fong's NPI (1497876247) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.