Derek Tang, M.D.
NPI 1487966727 · Gastroenterology Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Tang, M.D. is a Gastroenterology Physician provider in Anaheim, CA (NPI 1487966727).
Provider details
- NPI number
- 1487966727
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MT197564 (PA)
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
15 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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 208 | 198 |
| Pantoprazole Sodium | 125 | 67 |
| Omeprazole | 105 | 50 |
| Mesalamine | 57 | 20 |
| Lubiprostone | 43 | — |
| Azathioprine | 40 | — |
| Lactulose | 36 | — |
| Ursodiol |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-01
- Last updated
- 2021-11-29
Frequently asked questions
- What is Derek Tang's NPI number?
- Derek Tang's National Provider Identifier (NPI) is 1487966727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Tang's specialty?
- Derek Tang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Tang located?
- Derek Tang's practice location on file with NPPES is 3440 E La Palma Ave, Anaheim, CA 92806-2020.
- What is Derek Tang's phone number?
- The practice phone number listed in the NPPES registry for Derek Tang is (714) 644-2000.
- Does Derek Tang accept Medicare?
- Derek Tang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Tang's NPI active?
- Yes — Derek Tang's NPI (1487966727) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.