Joseph Jon Yu, M.D.
NPI 1669464103 · Endocrinology, Diabetes & Metabolism Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Jon Yu, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in San Diego, CA (NPI 1669464103).
Provider details
- NPI number
- 1669464103
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A56057 (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
20 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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 370 | 117 |
| Methimazole | 195 | 74 |
| Teriparatidebrand: Forteo | 88 | 15 |
| Alendronate Sodium | 81 | 34 |
| Semaglutidebrand: Ozempic | 72 | — |
| Ibandronate Sodium | 51 | 18 |
| Insulin Lisprobrand: Humalog | 46 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-19
- Last updated
- 2021-11-18
- Certified
- 2020-09-15
Frequently asked questions
- What is Joseph Jon Yu's NPI number?
- Joseph Jon Yu's National Provider Identifier (NPI) is 1669464103, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Jon Yu's specialty?
- Joseph Jon Yu is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Jon Yu located?
- Joseph Jon Yu's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Joseph Jon Yu's phone number?
- The practice phone number listed in the NPPES registry for Joseph Jon Yu is (800) 926-8273.
- Does Joseph Jon Yu accept Medicare?
- Joseph Jon Yu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Jon Yu's NPI active?
- Yes — Joseph Jon Yu's NPI (1669464103) 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.