NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1033397708 NP
Verify on CMS → Karen Holritz, NP
Adult Health Nurse Practitioner in New York, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 29,519 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
105
Medicare Part D claims · 46 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Karen Holritz, NP filed 105 Medicare Part D claims in 2023 as an Adult Health Nurse Practitioner in New York, New York, prescribing 87% generic.
- 105
- Part D claims, 2023
- 87%
- generic prescribing
- ≥35th
- 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.
CMS NPPES provider registry desk
NPI 1033397708 · Adult Health Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1033397708
- ENUM-MID 2008
- TAX-MID 30K Adult Health
- RX-LIGHT 105
- BOOK-MID 5,422 in New York
- PHOTO-ENUM Debra Guitz · 2008
Karen Holritz, NP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
105 ≥ 35th percentile 35% of 1,370,886 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 · 2023
What does the federal data show about Karen Holritz, NP?
Quality data not reportedPrimary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
105 91% vs specialty avg
Specialty distribution in New York
How Adult Health Nurse Practitioner compares to other specialties among New York 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).
Practice Address
Provider Details
| NPI | 1033397708 |
|---|---|
| Specialty | Adult Health Nurse Practitioner |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 02/05/2008 |
License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Karen Holritz, NP. To verify Karen Holritz, NP's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Karen Holritz, NP - brand share 13.0%
Adult Health Nurse Practitioner average
13% brand-name claims vs 87% generic, on 105 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
105
Total Claims
$15K
Total Drug Cost
46
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 107
- Total Day Supply
- 2,900
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $10K
- Generic Drug Cost
- $5K
- Opioid Claims
- 59 (56.2% rate)
Patient Demographics
- Average Patient Age
- 67.8 years
- Avg HCC Risk Score
- 2.94
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 13, 65-74: 21, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 22 |
| Gabapentin | 12 |
* 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 Karen Holritz, NP fits within the Adult Health Nurse Practitioner landscape nationally.
29,519
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider
Karen Holritz, NP's 105 claims are below the specialty average of 1,201.
Nationwide Adult Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Holritz, both outside New York so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adult Health Nurse Practitioner Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Holritz.
One of 5,422 Adult Health Nurse Practitioner providers enrolled in New York, 5 are shown here.
Dr. Danielle Aaron
CRNP
New York, NY
Vincent Abalajon
Elmhurst, NY
Dr. Megan Abate
ANP
New York, NY
Dr. Omowunmi Abayomi
N.P.
Staten Island, NY
Dr. Ashley Abbatantono
NP
New York, NY
Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Karen Holritz, NP's specialty? ▼
Karen Holritz, NP specializes in Adult Health Nurse Practitioner and practices in New York, New York. Credentials: NP.
How much does Karen Holritz, NP prescribe under Medicare Part D? ▼
In 2023, Karen Holritz, NP wrote 105 Medicare Part D claims totaling $15K in drug costs for 46 beneficiaries.
Where is Karen Holritz, NP located? ▼
Karen Holritz, NP is located at 1275 YORK AVE # M308, New York, NY, 10065. Phone: (212) 639-6851.
What is Karen Holritz, NP's NPI number? ▼
Karen Holritz, NP's National Provider Identifier (NPI) is 1033397708, issued on 02/05/2008.
Does Karen Holritz, NP prescribe more brand-name or generic drugs? ▼
Karen Holritz, NP's prescribing is 13% brand-name and 87% generic drugs by claim count, with $10K in brand drug costs.
Does Karen Holritz, NP prescribe opioids? ▼
Yes, Karen Holritz, NP had 59 opioid claims in 2023 with an opioid prescribing rate of 56.2%.
How many Adult Health Nurse Practitioner providers are there in the US? ▼
There are 29,519 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 Karen Holritz, NP prescribe most often? ▼
Based on 2023 Medicare Part D data, Karen Holritz, NP's most frequently prescribed drugs include Oxycodone Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karen Holritz, NP accept Medicare? ▼
Karen Holritz, NP appears in CMS Medicare data with 105 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karen Holritz, NP's credentials? ▼
Karen Holritz, NP's NPI is 1033397708 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
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.