Margaret Sun, MD
NPI 1174508584 · Family Medicine Physician · East Providence, RI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Sun, MD is a Family Medicine Physician provider in East Providence, RI (NPI 1174508584).
Provider details
- NPI number
- 1174508584
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- RI8624 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
60 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $121 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $176 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 12 | $131 |
Typical Medicare-allowed amounts for these services range $121–$176 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 135 | 41 |
| Lisinopril | 108 | 31 |
| Levothyroxine Sodium | 103 | 25 |
| Hydrochlorothiazide | 72 | 19 |
| Omeprazole | 71 | 20 |
| Losartan Potassium | 56 | 16 |
| Paroxetine Hcl | 52 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-08
- Last updated
- 2026-04-22
- Certified
- 2026-04-22
Frequently asked questions
- What is Margaret Sun's NPI number?
- Margaret Sun's National Provider Identifier (NPI) is 1174508584, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Sun's specialty?
- Margaret Sun is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Sun located?
- Margaret Sun's practice location on file with NPPES is 1990 Pawtucket Ave, East Providence, RI 02914-1726.
- What is Margaret Sun's phone number?
- The practice phone number listed in the NPPES registry for Margaret Sun is (401) 632-0956.
- Does Margaret Sun accept Medicare?
- Margaret Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Sun's NPI active?
- Yes — Margaret Sun's NPI (1174508584) is active in the NPPES registry as of the last update on 2026-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.