Mallory Zhang, M.D.
NPI 1912040726 · Obstetrics & Gynecology Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Zhang, M.D. is a Obstetrics & Gynecology Physician provider in Fontana, CA (NPI 1912040726).
Provider details
- NPI number
- 1912040726
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A79795 (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
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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dexamethasone | 41 | 16 |
| Oxycodone Hcl | 31 | 28 |
| Prochlorperazine Maleate | 21 | 16 |
| Ondansetronbrand: Ondansetron Odt | 17 | 14 |
| Letrozole | 14 | — |
| Lenvatinib Mesylatebrand: Lenvima | 13 | — |
| Ibuprofen | 13 | — |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-14
- Last updated
- 2021-12-15
- Certified
- 2021-12-15
Frequently asked questions
- What is Mallory Zhang's NPI number?
- Mallory Zhang's National Provider Identifier (NPI) is 1912040726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Zhang's specialty?
- Mallory Zhang is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mallory Zhang located?
- Mallory Zhang's practice location on file with NPPES is 9985 Sierra Ave, Fontana, CA 92335-6720.
- What is Mallory Zhang's phone number?
- The practice phone number listed in the NPPES registry for Mallory Zhang is (909) 427-2615.
- Does Mallory Zhang accept Medicare?
- Mallory Zhang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Zhang's NPI active?
- Yes — Mallory Zhang's NPI (1912040726) 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.