Joyce Sun, CRNP
NPI 1932588662 · Adult Medicine Physician · Rockville, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Sun, CRNP is a Adult Medicine Physician provider in Rockville, MD (NPI 1932588662).
Provider details
- NPI number
- 1932588662
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- R175445 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 64 | 13 |
| Losartan Potassium | 51 | — |
| Quetiapine Fumarate | 47 | — |
| Levothyroxine Sodium | 33 | — |
| Insulin Glargine,hum.rec.anlogbrand: Basaglar Kwikpen U-100 | 31 | — |
| Lisinopril | 26 | — |
| Citalopram Hydrobromide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$445 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-27
- Last updated
- 2021-10-02
- Certified
- 2021-10-02
Frequently asked questions
- What is Joyce Sun's NPI number?
- Joyce Sun's National Provider Identifier (NPI) is 1932588662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Sun's specialty?
- Joyce Sun is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Sun located?
- Joyce Sun's practice location on file with NPPES is 15245 Shady Grove Rd Ste 130, Rockville, MD 20850-6240.
- What is Joyce Sun's phone number?
- The practice phone number listed in the NPPES registry for Joyce Sun is (240) 426-0130.
- Does Joyce Sun accept Medicare?
- Joyce Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Sun's NPI active?
- Yes — Joyce Sun's NPI (1932588662) is active in the NPPES registry as of the last update on 2021-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.