Jun Guan, FNP
NPI 1457004475 · Family Nurse Practitioner · Rockville, MD
Jun Guan, FNP is a Family Nurse Practitioner provider in Rockville, MD (NPI 1457004475).
Provider details
- NPI number
- 1457004475
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- R230357 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
163 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 93 | $156 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 70 | $107 |
Typical Medicare-allowed amounts for these services range $107–$156 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$113 across 6 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
Additional practice locations (1)
- 7678 Quarterfield Rd Ste 201Glen Burnie, MD 21061-7071Phone: (410) 766-9413
Registry dates
- Enumerated
- 2022-01-31
- Last updated
- 2023-01-17
- Certified
- 2023-01-17
Frequently asked questions
- What is Jun Guan's NPI number?
- Jun Guan's National Provider Identifier (NPI) is 1457004475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jun Guan's specialty?
- Jun Guan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jun Guan located?
- Jun Guan's practice location on file with NPPES is 799 Rockville Pike, Rockville, MD 20852-1136.
- What is Jun Guan's phone number?
- The practice phone number listed in the NPPES registry for Jun Guan is (866) 389-2727.
- Is Jun Guan's NPI active?
- Yes — Jun Guan's NPI (1457004475) is active in the NPPES registry as of the last update on 2023-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.