NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1790243632 FNP
Verify on CMS → Ann Rupp, FNP
Family Nurse Practitioner in Stamford, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family 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
523
Medicare Part D claims · 166 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
39%
generic claims · 51% 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
Ann Rupp, FNP filed 523 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Stamford, Connecticut, prescribing 39% generic.
- 523
- Part D claims, 2023
- 39%
- generic prescribing
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.
Ann Rupp, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
523 Top 34% higher than 66% 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 Ann Rupp, FNP?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
523 57% vs specialty avg
Specialty distribution in Connecticut
How Family Nurse Practitioner compares to other specialties among Connecticut 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 Family 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).
Ann Rupp, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 292 LONG RIDGE RD STE 206, Stamford, CT, 06902, with a listed phone of (203) 276-7213. NPI 1790243632 was issued on 03/11/2019.
Medicare Part D records for calendar year 2023 show 523 prescription claims written by this provider, covering 166 Medicare beneficiaries and totaling roughly $341K in drug spend, split 51% brand-name and 39% generic by claim count.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1790243632 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 03/11/2019 |
Hospital and facility affiliations
Facilities where Ann Rupp, FNP 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.
Optum Medical Care PC
Mount Kisco, NY
White Plains Physician Services PC
Larchmont, NY
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Ann Rupp, FNP - brand share 51.0%
Family Nurse Practitioner average
51% brand-name claims vs 39% generic, on 523 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.
523
Total Claims
$341K
Total Drug Cost
166
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,130
- Total Day Supply
- 33,554
- Brand vs Generic
- 51% brand / 39% generic
- Brand Drug Cost
- $333K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 26, 65-74: 80, 75-84: 48, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ann Rupp, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metformin Hcl Er
Metformin Hcl Er
56 claims
- Ozempic
Ozempic
51 claims
- Mounjaro
Mounjaro
32 claims
- Trulicity
Trulicity
28 claims
- Tresiba Flextouch …
Tresiba Flextouch U-100
26 claims
- Levothyroxine Sodium 22
Levothyroxine Sodium
22 claims
- Glipizide Er 18
Glipizide Er
18 claims
- Atorvastatin Calcium 16
Atorvastatin Calcium
16 claims
| Drug | Claims |
|---|---|
| Metformin Hcl Er Metformin Hcl | 56 |
| Ozempic Semaglutide | 51 |
| Mounjaro Tirzepatide | 32 |
| Trulicity Dulaglutide | 28 |
| Tresiba Flextouch U-100 Insulin Degludec | 26 |
| Levothyroxine Sodium | 22 |
| Glipizide Er Glipizide | 18 |
| Atorvastatin Calcium | 16 |
| Glimepiride | 11 |
| Jardiance Empagliflozin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Ann Rupp, FNP fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Ann Rupp, FNP's 523 claims are below the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Rupp.
Dr. Renato Abastillas
APRN
Rocky Hill, CT
Farhiya Abdi
South Windsor, CT
Dr. Maryam Abdishoo
NP
Putnam, CT
Dr. Anwar Abdulrehman
APRN
Danbury, CT
Denise Ace
Stratford, CT
Compare Family 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family 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 Ann Rupp, FNP's specialty? ▼
Ann Rupp, FNP specializes in Family Nurse Practitioner and practices in Stamford, Connecticut. Credentials: FNP.
How much does Ann Rupp, FNP prescribe under Medicare Part D? ▼
In 2023, Ann Rupp, FNP wrote 523 Medicare Part D claims totaling $341K in drug costs for 166 beneficiaries.
Where is Ann Rupp, FNP located? ▼
Ann Rupp, FNP is located at 292 LONG RIDGE RD STE 206, Stamford, CT, 06902. Phone: (203) 276-7213.
What is Ann Rupp, FNP's NPI number? ▼
Ann Rupp, FNP's National Provider Identifier (NPI) is 1790243632, issued on 03/11/2019.
Does Ann Rupp, FNP prescribe more brand-name or generic drugs? ▼
Ann Rupp, FNP's prescribing is 51% brand-name and 39% generic drugs by claim count, with $333K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Ann Rupp, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Ann Rupp, FNP's most frequently prescribed drugs include Metformin Hcl Er, Ozempic, Mounjaro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ann Rupp, FNP accept Medicare? ▼
Ann Rupp, FNP appears in CMS Medicare data with 523 Part D claims and 166 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ann Rupp, FNP's credentials? ▼
Ann Rupp, FNP's NPI is 1790243632 with credentials FNP. 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.