NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1861918948 NP
Verify on CMS → Stella Wan, NP
Gerontology Nurse Practitioner in Cerritos, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,706 in Gerontology Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 176 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Stella Wan, NP filed 1,614 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in Cerritos, California.
- 2K
- Part D claims, 2023
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Stella Wan, NP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,614 Top 18% higher than 82% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Stella Wan, NP?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
1,614 26% vs specialty avg
Specialty distribution in California
How Gerontology Nurse Practitioner compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gerontology Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Stella Wan, NP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding NP credentials at 13357 SOUTH ST, Cerritos, CA, 90703, with a listed phone of (562) 379-8000. NPI 1861918948 was issued on 08/20/2017.
Medicare Part D records for calendar year 2023 show 1,614 prescription claims written by this provider, covering 176 Medicare beneficiaries and totaling roughly $151K in drug spend, with an opioid prescribing rate of 5.3%.
Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,706 enrolled providers across 54 states and an average of 1,283 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1861918948 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 08/20/2017 |
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Stella Wan, NP. To verify Stella Wan, NP's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,614
Total Claims
$151K
Total Drug Cost
176
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,627
- Total Day Supply
- 71,759
- Generic Drug Cost
- $50K
- Opioid Claims
- 86 (5.3% rate)
- Antibiotic Claims
- 85
Patient Demographics
- Average Patient Age
- 79.9 years
- Avg HCC Risk Score
- 3.97
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stella Wan, NP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
78 claims
- Atorvastatin Calcium
Atorvastatin Calcium
60 claims
- Hydromorphone Hcl
Hydromorphone Hcl
51 claims
- Eliquis
Eliquis
47 claims
- Pantoprazole Sodium
Pantoprazole Sodium
47 claims
- Ondansetron Hcl
Ondansetron Hcl
38 claims
- Quetiapine Fumarate
Quetiapine Fumarate
38 claims
- Lisinopril
Lisinopril
35 claims
| Drug | Claims |
|---|---|
| Gabapentin | 78 |
| Atorvastatin Calcium | 60 |
| Hydromorphone Hcl Hydromorphone Hcl/Pf | 51 |
| Eliquis Apixaban | 47 |
| Pantoprazole Sodium | 47 |
| Ondansetron Hcl Ondansetron Hcl/Pf | 38 |
| Quetiapine Fumarate | 38 |
| Lisinopril | 35 |
| Furosemide | 34 |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 33 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gerontology Nurse Practitioner Overview
How Stella Wan, NP fits within the Gerontology Nurse Practitioner landscape nationally.
9,706
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider
Stella Wan, NP's 1,614 claims are above the specialty average of 1,283.
Nearby Gerontology Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Wan.
Dr. Abigail Abar-Calica
N.P.
Menlo Park, CA
Dr. Michelle Abrams
NP
Thousand Oaks, CA
Dr. Karina Acevedo
AGACNP-BC
Los Angeles, CA
Dr. Lisa Adamek
NP
Roseville, CA
Dr. Mary Ahmadian
N.P.
Irvine, CA
Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gerontology Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Stella Wan, NP's specialty? ▼
Stella Wan, NP specializes in Gerontology Nurse Practitioner and practices in Cerritos, California. Credentials: NP.
How much does Stella Wan, NP prescribe under Medicare Part D? ▼
In 2023, Stella Wan, NP wrote 1,614 Medicare Part D claims totaling $151K in drug costs for 176 beneficiaries.
Where is Stella Wan, NP located? ▼
Stella Wan, NP is located at 13357 SOUTH ST, Cerritos, CA, 90703. Phone: (562) 379-8000.
What is Stella Wan, NP's NPI number? ▼
Stella Wan, NP's National Provider Identifier (NPI) is 1861918948, issued on 08/20/2017.
Does Stella Wan, NP prescribe opioids? ▼
Yes, Stella Wan, NP had 86 opioid claims in 2023 with an opioid prescribing rate of 5.3%.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 9,706 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does Stella Wan, NP prescribe most often? ▼
Based on 2023 Medicare Part D data, Stella Wan, NP's most frequently prescribed drugs include Gabapentin, Atorvastatin Calcium, Hydromorphone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stella Wan, NP accept Medicare? ▼
Stella Wan, NP appears in CMS Medicare data with 1,614 Part D claims and 176 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stella Wan, NP's credentials? ▼
Stella Wan, NP's NPI is 1861918948 with credentials NP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.