Chi-Na Pak, M.D.
NPI 1104915388 · Internal Medicine Physician · San Leandro, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chi-Na Pak, M.D. is a Internal Medicine Physician provider in San Leandro, CA (NPI 1104915388).
Provider details
- NPI number
- 1104915388
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D64944 (MD)
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 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 403 | 197 |
| Amlodipine Besylate | 211 | 102 |
| Losartan Potassium | 168 | 77 |
| Famotidine | 125 | 54 |
| Levothyroxine Sodium | 124 | 58 |
| Lisinopril | 115 | 64 |
| Metoprolol Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2021-12-15
Frequently asked questions
- What is Chi-Na Pak's NPI number?
- Chi-Na Pak's National Provider Identifier (NPI) is 1104915388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chi-Na Pak's specialty?
- Chi-Na Pak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chi-Na Pak located?
- Chi-Na Pak's practice location on file with NPPES is 2500 Merced St, San Leandro, CA 94577-4201.
- What is Chi-Na Pak's phone number?
- The practice phone number listed in the NPPES registry for Chi-Na Pak is (510) 454-2305.
- Does Chi-Na Pak accept Medicare?
- Chi-Na Pak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chi-Na Pak's NPI active?
- Yes — Chi-Na Pak's NPI (1104915388) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.