Joanna Tan, M.D.
NPI 1053637959 · Internal Medicine Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Tan, M.D. is a Internal Medicine Physician provider in Long Beach, CA (NPI 1053637959).
Provider details
- NPI number
- 1053637959
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A109279 (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
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 31 | 25 |
| Metoprolol Succinate | 29 | 26 |
| Furosemide | 25 | 24 |
| Pantoprazole Sodium | 18 | 15 |
| Tamsulosin Hcl | 18 | 16 |
| Losartan Potassium | 17 | 17 |
| Clopidogrel Bisulfate |
Practice location
Mailing address
Additional practice locations (1)
- 2699 Atlantic AveLong Beach, CA 90806-2710Phone: (562) 988-7000
Registry dates
- Enumerated
- 2010-04-16
- Last updated
- 2026-01-12
- Certified
- 2026-01-12
Frequently asked questions
- What is Joanna Tan's NPI number?
- Joanna Tan's National Provider Identifier (NPI) is 1053637959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Tan's specialty?
- Joanna Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Tan located?
- Joanna Tan's practice location on file with NPPES is 2801 Atlantic Ave, Long Beach, CA 90806-1701.
- What is Joanna Tan's phone number?
- The practice phone number listed in the NPPES registry for Joanna Tan is (714) 436-4444.
- Does Joanna Tan accept Medicare?
- Joanna Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Tan's NPI active?
- Yes — Joanna Tan's NPI (1053637959) is active in the NPPES registry as of the last update on 2026-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.