NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1891419461 PMHNP
Verify on CMS → April Tak Ko, PMHNP
Psychiatric/Mental Health Nurse Practitioner in Boston, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,928 in Psychiatric/Mental Health 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
207
Medicare Part D claims · 47 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 895
What the federal data shows
April Tak Ko, PMHNP filed 207 Medicare Part D claims in 2024 as a Psychiatric/Mental Health Nurse Practitioner in Boston, Massachusetts.
- 207
- Part D claims, 2024
- ≥48th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about April Tak Ko, PMHNP
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1891419461), first enumerated 09/28/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 207 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not April Tak Ko, PMHNP's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1891419461 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1891419461
- ENUM-RECENT 2022
- TAX-MID 45K Psychiatric/Mental Health
- RX-LIGHT 207
- BOOK-LIGHT 1,541 in Massachusetts
- PHOTO-ENUM Jessi Todd · 2022
April Tak Ko, PMHNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
207 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about April Tak Ko, PMHNP?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
207 77% vs specialty avg
Specialty distribution in Massachusetts
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Massachusetts 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 Psychiatric/Mental Health 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).
Practice Address
Provider Details
| NPI | 1891419461 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | PMHNP |
| Gender | Female |
| NPI Issued | 09/28/2022 |
Hospital and facility affiliations
Facilities where April Tak Ko, PMHNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Atrius Health Inc
Boston, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 - they are NOT specific to April Tak Ko, PMHNP. To verify April Tak Ko, PMHNP's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM 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 Massachusetts 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 2024.
207
Total Claims
$14K
Total Drug Cost
47
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 414.633
- Total Day Supply
- 12,158
- Generic Drug Cost
- $4K
Patient Demographics
- Average Patient Age
- 65.4 years
- Avg HCC Risk Score
- 1.52
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 16, 65-74: 17, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What April Tak Ko, PMHNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Mirtazapine
Mirtazapine
16 claims
- Clonazepam
Clonazepam
14 claims
- Duloxetine Hcl
Duloxetine Hcl
14 claims
- Lamotrigine
Lamotrigine
13 claims
- Sertraline Hcl
Sertraline Hcl
12 claims
- Bupropion Xl
Bupropion Xl
11 claims
| Drug | Claims |
|---|---|
| Mirtazapine | 16 |
| Clonazepam | 14 |
| Duloxetine Hcl | 14 |
| Lamotrigine | 13 |
| Sertraline Hcl | 12 |
| Bupropion Xl Bupropion Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Psychiatric/Mental Health Nurse Practitioner in MA →
All providers in Massachusetts →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How April Tak Ko, PMHNP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
44,928
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
895
Avg Claims per Provider
April Tak Ko, PMHNP's 207 claims are below the specialty average of 895.
Nationwide Psychiatric/Mental Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Ko, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Ko.
One of 1,541 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Massachusetts, 5 are shown here.
Gabrielle Abelard
PMHCNS, BC
Stoughton, MA
Dorcas Abimaje
PMHNP
Longmeadow, MA
Sandra Abrahamian
PMHNP
Worcester, MA
Hadiza Abubakar
CNP
Worcester, MA
Samuel Acheampong
Framingham, MA
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is April Tak Ko, PMHNP's specialty? ▼
April Tak Ko, PMHNP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Boston, Massachusetts. Credentials: PMHNP.
How much does April Tak Ko, PMHNP prescribe under Medicare Part D? ▼
In 2024, April Tak Ko, PMHNP wrote 207 Medicare Part D claims totaling $14K in drug costs for 47 beneficiaries.
Where is April Tak Ko, PMHNP located? ▼
April Tak Ko, PMHNP is located at 191 W 8TH ST APT 6, Boston, MA, 02127. Phone: (617) 312-1052.
What is April Tak Ko, PMHNP's NPI number? ▼
April Tak Ko, PMHNP's National Provider Identifier (NPI) is 1891419461, issued on 09/28/2022.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 44,928 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 895 Medicare Part D claims per year.
What drugs does April Tak Ko, PMHNP prescribe most often? ▼
Based on 2024 Medicare Part D data, April Tak Ko, PMHNP's most frequently prescribed drugs include Mirtazapine, Clonazepam, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does April Tak Ko, PMHNP accept Medicare? ▼
April Tak Ko, PMHNP appears in CMS Medicare data with 207 Part D claims and 47 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify April Tak Ko, PMHNP's credentials? ▼
April Tak Ko, PMHNP's NPI is 1891419461 with credentials PMHNP. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.