NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1437308186 GNP-BC
Verify on CMS → Sylvia Parker, GNP-BC
Gerontology Nurse Practitioner in Wallingford, 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 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 · 91 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$26.45
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Sylvia Parker, GNP-BC filed 2,221 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in Wallingford, Connecticut, prescribing 85% generic.
- 2K
- Part D claims, 2023
- 85%
- generic prescribing
- $26.45
- industry payments (Sunshine Act)
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.
Sylvia Parker, GNP-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,221 Top 15% higher than 85% 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 Sylvia Parker, GNP-BC?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
2,221 73% vs specialty avg
Specialty distribution in Connecticut
How Gerontology 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 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).
Sylvia Parker, GNP-BC appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding GNP-BC credentials at 22 MASONIC AVE, Wallingford, CT, 06492, with a listed phone of (203) 679-5900. NPI 1437308186 was issued on 09/17/2008.
Medicare Part D records for calendar year 2023 show 2,221 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $134K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 5.8%.
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 | 1437308186 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | GNP-BC |
| Gender | Female |
| NPI Issued | 09/17/2008 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Sylvia Parker, GNP-BC. Source: openpaymentsdata.cms.gov.
Total received
$26
Largest payer
Teva Pharmaceuticals USA, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Sylvia Parker, GNP-BC - brand share 15.0%
Gerontology Nurse Practitioner average
15% brand-name claims vs 85% generic, on 2,221 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.
2,221
Total Claims
$134K
Total Drug Cost
91
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,222
- Total Day Supply
- 45,902
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $85K
- Generic Drug Cost
- $50K
- Opioid Claims
- 129 (5.8% rate)
- Antibiotic Claims
- 135
Patient Demographics
- Average Patient Age
- 79.6 years
- Avg HCC Risk Score
- 3.00
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sylvia Parker, GNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
136 claims
- Levothyroxine Sodium
Levothyroxine Sodium
110 claims
- Pantoprazole Sodium
Pantoprazole Sodium
106 claims
- Furosemide
Furosemide
101 claims
- Atorvastatin Calcium
Atorvastatin Calcium
87 claims
- Eliquis
Eliquis
63 claims
- Quetiapine Fumarate
Quetiapine Fumarate
61 claims
- Tramadol Hcl
Tramadol Hcl
57 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 136 |
| Levothyroxine Sodium | 110 |
| Pantoprazole Sodium | 106 |
| Furosemide | 101 |
| Atorvastatin Calcium | 87 |
| Eliquis Apixaban | 63 |
| Quetiapine Fumarate | 61 |
| Tramadol Hcl | 57 |
| Prednisone | 56 |
| Mirtazapine | 52 |
* 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 Sylvia Parker, GNP-BC 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
Sylvia Parker, GNP-BC's 2,221 claims are above the specialty average of 1,283.
Nearby Gerontology Nurse Practitioner Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Parker.
Dr. Linda Accordino
RN, MSN
West Haven, CT
Dr. Celina Adams
APRN
Uncasville, CT
Dr. Susan Ade
APRN, RN
Shelton, CT
Dr. Lawrence Anderson
AGNP-C
Waterbury, CT
Dr. Terance Anderson
APRN
New Haven, CT
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 Connecticut 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 Sylvia Parker, GNP-BC's specialty? ▼
Sylvia Parker, GNP-BC specializes in Gerontology Nurse Practitioner and practices in Wallingford, Connecticut. Credentials: GNP-BC.
How much does Sylvia Parker, GNP-BC prescribe under Medicare Part D? ▼
In 2023, Sylvia Parker, GNP-BC wrote 2,221 Medicare Part D claims totaling $134K in drug costs for 91 beneficiaries.
Where is Sylvia Parker, GNP-BC located? ▼
Sylvia Parker, GNP-BC is located at 22 MASONIC AVE, Wallingford, CT, 06492. Phone: (203) 679-5900.
What is Sylvia Parker, GNP-BC's NPI number? ▼
Sylvia Parker, GNP-BC's National Provider Identifier (NPI) is 1437308186, issued on 09/17/2008.
Does Sylvia Parker, GNP-BC prescribe more brand-name or generic drugs? ▼
Sylvia Parker, GNP-BC's prescribing is 15% brand-name and 85% generic drugs by claim count, with $85K in brand drug costs.
Does Sylvia Parker, GNP-BC prescribe opioids? ▼
Yes, Sylvia Parker, GNP-BC had 129 opioid claims in 2023 with an opioid prescribing rate of 5.8%.
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 Sylvia Parker, GNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Sylvia Parker, GNP-BC's most frequently prescribed drugs include Trazodone Hcl, Levothyroxine Sodium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sylvia Parker, GNP-BC accept Medicare? ▼
Sylvia Parker, GNP-BC appears in CMS Medicare data with 2,221 Part D claims and 91 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sylvia Parker, GNP-BC's credentials? ▼
Sylvia Parker, GNP-BC's NPI is 1437308186 with credentials GNP-BC. 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.