Diana Chen, MD, MBA
NPI 1073136057 · Family Medicine Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Chen, MD, MBA is a Family Medicine Physician provider in Palo Alto, CA (NPI 1073136057).
Provider details
- NPI number
- 1073136057
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MBA
- Sex
- Female
- Sole proprietor
- No
- License
- A188341 (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
6 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 17 |
| Duloxetine Hcl | 15 |
| Atorvastatin Calcium | 15 |
| Pregabalin | 14 |
| Mirtazapine | 12 |
| Gabapentin | 11 |
| Naltrexone Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 401 Quarry Rd Rm 2208Palo Alto, CA 94304-1419Phone: (650) 723-2423
Registry dates
- Enumerated
- 2020-05-25
- Last updated
- 2024-05-09
- Certified
- 2024-05-09
Frequently asked questions
- What is Diana Chen's NPI number?
- Diana Chen's National Provider Identifier (NPI) is 1073136057, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Chen's specialty?
- Diana Chen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Chen located?
- Diana Chen's practice location on file with NPPES is 795 El Camino Real, Palo Alto, CA 94301-2302.
- What is Diana Chen's phone number?
- The practice phone number listed in the NPPES registry for Diana Chen is (650) 321-4121.
- Does Diana Chen accept Medicare?
- Diana Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Chen's NPI active?
- Yes — Diana Chen's NPI (1073136057) is active in the NPPES registry as of the last update on 2024-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.