Colleen Sun, PMHNP-BC
NPI 1447925912 · Psychiatric/Mental Health Nurse Practitioner · Rosemead, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colleen Sun, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Rosemead, CA (NPI 1447925912).
Provider details
- NPI number
- 1447925912
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- NP95018516 (CA)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
195 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 80 | $118 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 12 | $165 |
Typical Medicare-allowed amounts for these services range $84–$165 (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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 125 | — |
| Trazodone Hcl | 98 | 19 |
| Mirtazapine | 89 | — |
| Quetiapine Fumarate | 88 | 11 |
| Benztropine Mesylate | 87 | — |
| Escitalopram Oxalate | 87 | 14 |
| Hydroxyzine Hcl | 82 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$902 across 14 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 (2)
- 2705 S Diamond Bar Blvd Ste 238Diamond Bar, CA 91765-3554Phone: (909) 860-2166
- 415 W Route 66 Ste 202Glendora, CA 91740-4335Phone: (626) 963-4467
Registry dates
- Enumerated
- 2021-08-16
- Last updated
- 2022-05-26
- Certified
- 2022-05-26
Frequently asked questions
- What is Colleen Sun's NPI number?
- Colleen Sun's National Provider Identifier (NPI) is 1447925912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colleen Sun's specialty?
- Colleen Sun is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Colleen Sun located?
- Colleen Sun's practice location on file with NPPES is 9353 Valley Blvd, Rosemead, CA 91770-1923.
- What is Colleen Sun's phone number?
- The practice phone number listed in the NPPES registry for Colleen Sun is (626) 287-2988.
- Does Colleen Sun accept Medicare?
- Colleen Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Colleen Sun's NPI active?
- Yes — Colleen Sun's NPI (1447925912) is active in the NPPES registry as of the last update on 2022-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.