Mary-Ann Malik, MD
NPI 1992883003 · Internal Medicine Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary-Ann Malik, MD is a Internal Medicine Physician provider in Antioch, CA (NPI 1992883003).
Provider details
- NPI number
- 1992883003
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A81536 (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 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 435 | 162 |
| Amlodipine Besylate | 318 | 121 |
| Losartan Potassium | 221 | 78 |
| Lisinopril | 191 | 75 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 191 | 47 |
| Levothyroxine Sodium | 151 | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2021-12-09
Frequently asked questions
- What is Mary-Ann Malik's NPI number?
- Mary-Ann Malik's National Provider Identifier (NPI) is 1992883003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary-Ann Malik's specialty?
- Mary-Ann Malik is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary-Ann Malik located?
- Mary-Ann Malik's practice location on file with NPPES is 3400 Delta Fair Blvd, Antioch, CA 94509-4004.
- What is Mary-Ann Malik's phone number?
- The practice phone number listed in the NPPES registry for Mary-Ann Malik is (925) 779-5000.
- Does Mary-Ann Malik accept Medicare?
- Mary-Ann Malik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary-Ann Malik's NPI active?
- Yes — Mary-Ann Malik's NPI (1992883003) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.