Margaret Liu, MD
NPI 1134689284 · Internal Medicine Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Liu, MD is a Internal Medicine Physician provider in Scottsdale, AZ (NPI 1134689284).
Provider details
- NPI number
- 1134689284
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 65954 (AZ)
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
7 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 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Pantoprazole Sodium | 24 |
| Omeprazole/Sodium Bicarbonatebrand: Omeprazole-Sodium Bicarbonate | 14 |
| Omeprazole | 13 |
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 no Part D record, 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)
- 13400 E Shea BlvdScottsdale, AZ 85259-5499Phone: (480) 301-8000
Registry dates
- Enumerated
- 2019-03-24
- Last updated
- 2025-06-05
- Certified
- 2025-06-05
Frequently asked questions
- What is Margaret Liu's NPI number?
- Margaret Liu's National Provider Identifier (NPI) is 1134689284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Liu's specialty?
- Margaret Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Liu located?
- Margaret Liu's practice location on file with NPPES is 3260 N Hayden Rd Ste 112, Scottsdale, AZ 85251-6650.
- What is Margaret Liu's phone number?
- The practice phone number listed in the NPPES registry for Margaret Liu is (602) 264-9100.
- Does Margaret Liu accept Medicare?
- Margaret Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Liu's NPI active?
- Yes — Margaret Liu's NPI (1134689284) is active in the NPPES registry as of the last update on 2025-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.