NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1912416165 NP-C
Verify on CMS → John Ahn, NP-C
Adult Health Nurse Practitioner in Wayne, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 29,492 in Adult 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
965
Medicare Part D claims · 65 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Ahn, NP-C filed 965 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in Wayne, New Jersey.
- 965
- 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.
John Ahn, NP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
965 Top 25% higher than 75% 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 John Ahn, NP-C?
Quality data not reportedPrimary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
965 20% vs specialty avg
Specialty distribution in New Jersey
How Adult Health Nurse Practitioner compares to other specialties among New Jersey 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 Adult 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).
John Ahn, NP-C appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding NP-C credentials at 224 HAMBURG TPKE RM 4023, Wayne, NJ, 07470, with a listed phone of (973) 956-3357. NPI 1912416165 was issued on 09/20/2017.
Medicare Part D records for calendar year 2023 show 965 prescription claims written by this provider, covering 65 Medicare beneficiaries and totaling roughly $62K in drug spend, with an opioid prescribing rate of 7.5%.
Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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 | 1912416165 |
|---|---|
| Specialty | Adult Health Nurse Practitioner |
| Credentials | NP-C |
| Gender | Male |
| NPI Issued | 09/20/2017 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
965
Total Claims
$62K
Total Drug Cost
65
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 965
- Total Day Supply
- 23,016
- Generic Drug Cost
- $22K
- Opioid Claims
- 72 (7.5% rate)
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 81.5 years
- Avg HCC Risk Score
- 2.69
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Ahn, NP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
68 claims
- Amlodipine Besylate
Amlodipine Besylate
53 claims
- Mirtazapine
Mirtazapine
40 claims
- Levothyroxine Sodium
Levothyroxine Sodium
37 claims
- Losartan Potassium
Losartan Potassium
35 claims
- Metoprolol Tartrate
Metoprolol Tartrate
29 claims
- Metformin Hcl 24
Metformin Hcl
24 claims
- Tramadol Hcl 24
Tramadol Hcl
24 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 68 |
| Amlodipine Besylate | 53 |
| Mirtazapine | 40 |
| Levothyroxine Sodium | 37 |
| Losartan Potassium | 35 |
| Metoprolol Tartrate | 29 |
| Metformin Hcl | 24 |
| Tramadol Hcl | 24 |
| Alprazolam | 23 |
| Oxycodone Hcl | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Health Nurse Practitioner Overview
How John Ahn, NP-C fits within the Adult Health Nurse Practitioner landscape nationally.
29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider
John Ahn, NP-C's 965 claims are below the specialty average of 1,201.
Nearby Adult Health Nurse Practitioner Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Ahn.
Dr. Fatima Ababon
FNP
Plainfield, NJ
Dr. Kristina Abanes
NP
Emerson, NJ
Dr. Samantha Abbott
APN-C
Middletown, NJ
Dr. Heidi Abdelmaguid
APN
Denville, NJ
Dr. Basiratu Abdoul-Karim
ANP
West Orange, NJ
Compare Adult Health 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 New Jersey medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Adult Health 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
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Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New Jersey
Frequently Asked Questions
What is John Ahn, NP-C's specialty? ▼
John Ahn, NP-C specializes in Adult Health Nurse Practitioner and practices in Wayne, New Jersey. Credentials: NP-C.
How much does John Ahn, NP-C prescribe under Medicare Part D? ▼
In 2023, John Ahn, NP-C wrote 965 Medicare Part D claims totaling $62K in drug costs for 65 beneficiaries.
Where is John Ahn, NP-C located? ▼
John Ahn, NP-C is located at 224 HAMBURG TPKE RM 4023, Wayne, NJ, 07470. Phone: (973) 956-3357.
What is John Ahn, NP-C's NPI number? ▼
John Ahn, NP-C's National Provider Identifier (NPI) is 1912416165, issued on 09/20/2017.
Does John Ahn, NP-C prescribe opioids? ▼
Yes, John Ahn, NP-C had 72 opioid claims in 2023 with an opioid prescribing rate of 7.5%.
How many Adult Health Nurse Practitioner providers are there in the US? ▼
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does John Ahn, NP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, John Ahn, NP-C's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Mirtazapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Ahn, NP-C accept Medicare? ▼
John Ahn, NP-C appears in CMS Medicare data with 965 Part D claims and 65 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Ahn, NP-C's credentials? ▼
John Ahn, NP-C's NPI is 1912416165 with credentials NP-C. 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.