Cynthia Peng, M.D.
NPI 1952789463 · Emergency Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Peng, M.D. is a Emergency Medicine Physician provider in Stanford, CA (NPI 1952789463).
Provider details
- NPI number
- 1952789463
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MT208458 (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
11 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 30 | 30 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Cefdinir | 15 | 15 |
| Fluconazole | 15 | 15 |
| Doxycycline Monohydrate | 14 | 14 |
| Oxycodone Hcl | 13 | 13 |
| Cephalexin | 12 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-16
- Last updated
- 2022-04-08
- Certified
- 2022-04-08
Frequently asked questions
- What is Cynthia Peng's NPI number?
- Cynthia Peng's National Provider Identifier (NPI) is 1952789463, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Peng's specialty?
- Cynthia Peng is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia Peng located?
- Cynthia Peng's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Cynthia Peng's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Peng is (650) 723-4000.
- Does Cynthia Peng accept Medicare?
- Cynthia Peng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Peng's NPI active?
- Yes — Cynthia Peng's NPI (1952789463) is active in the NPPES registry as of the last update on 2022-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.